Status of Walleye Populations at Bourque, Goodfish, and Seibert Lakes, Alberta, 2006

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Status of Walleye Populations at Bourque, Goodfish, and Seibert Lakes, Alberta, 2006

Brendan Ganton and Bill Patterson Alberta Conservation Association #101, 9 Chippewa Rd Sherwood Park AB T8A 6J7

Report Series Editor PETER AKU KELLEY J. KISSNER Alberta Conservation Association 59 Hidden Green NW #101, 9 Chippewa Rd Calgary, AB T3A 5K6 Sherwood Park, AB T8A 6J7

Conservation Report Series Type Data, Technical

ISBN printed: 978‐0‐7785‐6571‐0 ISBN online: 978‐0‐7785‐6572‐7 Publication No.: T/164

Disclaimer: This document is an independent report prepared by the Alberta Conservation Association. The authors are solely responsible for the interpretations of data and statements made within this report.

Reproduction and Availability: This report and its contents may be reproduced in whole, or in part, provided that this title page is included with such reproduction and/or appropriate acknowledgements are provided to the authors and sponsors of this project.

Suggested Citation: Ganton, B.P., and B. Patterson. 2007. Status of walleye populations at Bourque, Goodfish, and Seibert Lakes, Alberta, 2006. Data report, D‐2007‐009, produced by the Alberta Conservation Association, Sherwood Park, Alberta, Canada. 23 pp + App.

Cover photo credit: David Fairless

Digital copies of conservation reports can be obtained from: Alberta Conservation Association #101, 9 Chippewa Rd Sherwood Park AB T8A 6J7 Toll Free: 1‐877‐969‐9091 Tel: (780) 410‐1999 Fax: (780) 464‐0990 Email: info@ab‐conservation.com Website: www.ab‐conservation.com

i EXECUTIVE SUMMARY

In an effort to contribute to effective management of walleye stocks in Alberta, the Alberta Conservation Association (ACA) conducted gill netting surveys on Bourque, Goodfish and Seibert lakes from 19 September to 4 October 2006 using the Fall Walleye Index Netting (FWIN) protocol. FWIN provides an estimate of both stock abundance and population structure and is used by Alberta Sustainable Resource Development as a tool to sustainably manage the sport fishery.

Data from Bourque Lake suggest that in 2006 the walleye population had a broad and stable age‐class distribution, though the catch rate of each year class was low (< 2 walleye/100 m2/24 h). The mean age of walleye sampled was 4.9 years. The fishery was composed of moderately fast‐growing and early‐maturing fish. The catch rate of walleye was 9.3 walleye/100 m2/24 h.

Data from Goodfish Lake suggest that in 2006 the walleye population had a narrow and unstable age‐class distribution. The mean age of walleye sampled was 5.2 years, and the fishery was composed of slow‐growing, moderately early‐maturing fish. The catch rate of walleye was 14.6 walleye/100 m2/24 h.

Data from Seibert Lake suggest that in 2006 the walleye population had a broad age‐ class distribution, primarily supported by three strong age classes. The mean age of walleye sampled was 5.7 years, and the fishery was composed of slow‐growing, early‐ maturing fish. The catch rate of walleye was 14.8 walleye/100 m2 /24 h.

ii ACKNOWLEDGEMENTS

Financial support for this study was provided by the Alberta Conservation Association. Alberta Sustainable Resource Development provided in‐kind support, campground and sampling facilities. We thank Steven Hamilton (ACA) for providing mapping support.

iii TABLE OF CONTENTS

EXECUTIVE SUMMARY...... ii ACKNOWLEDGEMENTS...... iii TABLE OF CONTENTS ...... iv LIST OF FIGURES...... v LIST OF APPENDICES ...... vi 1.0 INTRODUCTION ...... 1 1.1 Bourque Lake...... 1 1.2 Goodfish Lake...... 1 1.3 Seibert Lake...... 2 2.0 STUDY AREAS...... 2 2.1 Bourque Lake...... 2 2.2 Goodfish Lake...... 2 2.3 Seibert Lake...... 3 3.0 MATERIALS AND METHODS ...... 7 4.0 RESULTS ...... 10 4.1 Capture data ...... 10 4.2 Walleye population structure...... 12 4.3 Stock assessment summaries...... 21 5.0 LITERATURE CITED ...... 22 6.0 APPENDICES...... 24

iv LIST OF FIGURES

Figure 1. Map of Bourque Lake, Alberta ...... 4 Figure 2. Map of Goodfish Lake, Alberta...... 5 Figure 3. Map of Seibert Lake, Alberta...... 6 Figure 4. Standardized probability density function of walleye catch rate as sampled from Bourque Lake, Alberta in 2006...... 10 Figure 5. Standardized probability density function of walleye catch as sampled from Goodfish Lake, Alberta in 2006...... 11 Figure 6. Standardized probability density function of walleye catch rate as sampled from Seibert Lake, Alberta in 2006...... 12 Figure 7. Age‐class distribution of walleye sampled from Bourque Lake, Alberta in 2006...... 13 Figure 8. Length‐at‐age relationship for walleye sampled from Bourque Lake, Alberta in 2006...... 13 Figure 9. Age‐at‐maturity of male walleye sampled from Bourque Lake, Alberta in 2006...... 14 Figure 10. Age‐at‐maturity of female walleye sampled from Bourque Lake, Alberta in 2006...... 14 Figure 11. Age‐class distribution of walleye sampled from Goodfish Lake, Alberta in 2006...... 15 Figure 12. Length‐at‐age relationship for walleye sampled from Goodfish Lake, Alberta in 2006...... 16 Figure 13. Age‐at‐maturity of male walleye sampled from Goodfish Lake, Alberta in 2006...... 17 Figure 14. Age‐at‐maturity of female walleye sampled from Goodfish Lake, Alberta in 2006...... 17 Figure 15. Age‐class distribution of walleye sampled from Seibert Lake, Alberta in 2006...... 18 Figure 16. Length‐at‐age relationship for walleye sampled from Seibert Lake, Alberta in 2006 ...... 19 Figure 17. Age‐at‐maturity of male walleye sampled from Seibert Lake, Alberta in 2006...... 20 Figure 18. Age‐at‐maturity of female walleye sampled from Seibert Lake, Alberta in 2006...... 20

v LIST OF APPENDICES

Appendix 1. Net location, set and pull times for survey of Bourque Lake, Alberta in 2006...... 24 Appendix 2. Net location, set and pull times for survey of Goodfish Lake, Alberta in 2006...... 24 Appendix 3. Net location, set and pull times for survey of Seibert Lake, Alberta 2006...... 25 Appendix 4. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Bourque Lake, Alberta in 2006...... 26 Appendix 5. Biological data collected during survey of Bourque Lake, Alberta in 2006...... 27 Appendix 6. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Goodfish Lake, Alberta in 2006...... 36 Appendix 7. Biological data collected during survey of Goodfish Lake, Alberta in 2006...... 37 Appendix 8. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Seibert Lake, Alberta in 2006 ...... 50 Appendix 9. Biological data collected during survey of Seibert Lake, Alberta in 2006...... 51

1.0 INTRODUCTION

Angling pressure on sport fish populations in Alberta, especially walleye (Sander vitreus) populations, has been increasing for many years. A large number of licensed anglers, relatively few lakes, and slow‐growing, late‐maturing fish have put Alberta’s walleye population under stress (Sullivan 2003). By 1990, relatively unrestricted fishing pressure on walleye across Alberta had caused many walleye populations to decline to a small fraction of their former abundance (Sullivan 2003). To recover and protect exploited walleye populations, Alberta Sustainable Resources Development (ASRD) created the Alberta Walleye Management and Recovery Plan (AWMRP) in 1995. Under the AWMRP, lakes were classified into one of four general categories based on the fishery’s level of exploitation. The four categories included: collapsed, vulnerable, stable, and trophy (Berry 1995). Using this classification each lake was assigned a corresponding sport fishing regulation (Sullivan 2003).

Gill netting surveys at Bourque, Goodfish and Seibert lakes were conducted by Alberta Conservation Association (ACA) in 2006 to obtain information on the abundance and population structure of walleye in these lakes. The information collected in these surveys will allow ASRD to evaluate the effect of current sport fish regulations on the fisheries at these lakes and will inform future management decisions.

1.1 Bourque Lake

The Bourque Lake walleye fishery is currently classified as vulnerable, and since 1998 has been managed with a possession limit of one walleye ≥ 500 mm minimum total‐ length (TL).

1.2 Goodfish Lake

The Goodfish Lake walleye fishery is currently classified as stable, and is managed with a possession limit of three walleye ≥ 500 mm TL.

1.3 Seibert Lake

Prior to 1975, Siebert Lake was considered by anglers to be an excellent walleye fishery that supported an abundant population of small to medium‐sized fish, and walleye were described as “plentiful” and “easy to catch” (Valastin and Sullivan 1997). In recent years, Seibert Lake has continued to be a popular destination for anglers seeking walleye. From 1995 ‐ 2003 the walleye population of Seibert Lake was not categorized following the AWMRP, and from 1992 the population was managed with a protective slot size regulation (430 – 530 mm TL). In 2003 resource managers listed the population as vulnerable following the AWMRP, and updated the angling regulation to a daily possession limit of one walleye ≥ 500 mm TL.

2.0 STUDY AREAS

2.1 Bourque Lake

Bourque Lake (54°40ʹ N, 110°33ʹ W) is located within the Beaver River drainage, approximately 215 km northeast of Edmonton, and 30 km northwest of Cold Lake, Alberta (Figure 1). The lake has a surface area of 521 ha (Government of Alberta 2007). It is fed by several small streams on the north end and is drained by Jackfish Creek, which flows from the south into Tucker Lake and on to the Beaver River. Bourque Lake can be accessed by well site roads and unimproved trails on both the south and west sides of the lake. There is a rough boat launch and undeveloped campsites at both points of access.

2.2 Goodfish Lake

Goodfish Lake (54°16ʹ N, 111°49ʹ W) is located approximately 140 km northeast of Edmonton and 100 km west of Cold Lake, Alberta (Figure 2). The lake has a surface area of 870 ha (Government of Alberta 2007). The majority of the shoreline is bordered by farmland; however, the small community of Goodfish Lake occurs on the lake’s northeast shore. The lake is accessed by gravel roads on the south side of the lake, and development at the lake includes a small parking area and a crude boat launch.

2.3 Seibert Lake

Seibert Lake (54°43ʹ N, 111°18ʹ W) is located within the Beaver River drainage, approximately 265 km northeast of Edmonton and 100 km east of Lac La Biche, Alberta (Figure 3). Seibert Lake has a surface area of 3790 ha (Government of Alberta 2007). Past records indicate that the lake has a maximum depth of 11 m, with most of the lake having a depth less than 9 m. Several intermittent streams feed the lake and one outlet flows from the south end of the lake into the Sand River which joins the Beaver River (Mitchell and Prepas 1990). The lake is accessed by a graded truck trail north of Highway 55. Development at the lake is limited to the Seibert Lake Forest Recreation Area located on the southeast shore. The recreation area offers camping sites and a boat launch.

Figure 1. Map of Bourque Lake, Alberta showing sampling locations for walleye in 2006.

Figure 2. Map of Goodfish Lake, Alberta showing sampling locations for walleye in 2006.

Figure 3. Map of Seibert Lake, Alberta showing sampling locations for walleye in 2006.

3.0 MATERIALS AND METHODS

The status of walleye was assessed on Bourque, Goodfish, and Seibert Lakes between 19 September to 4 October 2006 using the Fall Walleye Index Netting (FWIN) protocol developed by the Ontario Ministry of Natural Resources (Morgan 2000). Any modifications to this method were taken from the Alberta Walleye Index‐netting Protocol (Sullivan and Park 2004). FWIN provides a precise snapshot of the population structure by minimizing variance associated with growth of fish over a longer survey period (Morgan 2000). FWIN catch data were validated as an appropriate index of walleye abundance using population density estimates and angler total catch rate data (Sullivan and Park 2004). The metric catch/net was highly correlated with catch/angling‐hour (r2 = 0.90, df = 6, P = 0.001) and, therefore, is a reasonable surrogate for estimating walleye abundance.

Following these protocols, a 1.8 m deep by 61 m long, monofilament gill net was used to sample walleye. The net was comprised of eight 7.6‐m long panels in the following order of mesh size: 25, 38, 51, 64, 76, 102, 127, and 152 mm (stretched measurements). Sampling effort was determined by monitoring sampling precision, and biological sample size. For this assessment, a ≤ 20% level of standard error between catches or a biological sample size of approximately 200 walleye was considered adequate following Morgan (2000). However, the standard error between catches was monitored and if a ≤ 20% level was not achieved with the prescribed effort and biological sample size, netting was stopped and the existing level of standard error was used.

To ensure uniform catchability, nets were set at stratified, randomly selected locations following the process set out in Morgan (2000). Each lake surface was divided into 1 km2 sampling units (i.e., 1, 2, 3…) corresponding to a Universal Transverse Mercator (UTM) grid. Each UTM grid was numbered sequentially and sub‐divided into 0.25 km2 quadrats (i.e., A, B, C and D). Both UTM grids and quadrats were randomly selected. Bathymetric data was used to assign selected quadrats into either shallow (2 – 5 m depth) or deep (5 – 15 m depth) strata. Based on the ratio of shallow to deep quadrats, a proportional number of nets were set in each stratum.

To ensure high precision in catches, nets were set in fall when the surface temperature was between 10°C and 15°C. To ensure fish were caught throughout a full circadian cycle, nets were set for approximately 24 h, though a range of 21 ‐ 27 h was accepted. To minimize potential bias due to seasonal population changes, each survey was completed on consecutive days with nets being pulled and reset each day.

Once on the lake at the pre‐determined sample locations, specific site selection was made following Morgan (2000). First, a depth sounder was used to locate the appropriate depth range and suitable topography. To reduce possible sampling bias from variations in the lake habitat, areas along steep gradients, drop‐offs, or heavy vegetation were avoided. Nets were set perpendicular to the shore. If the desired depth or topography was not found within 250 m of the selected quadrat centre, that quadrat was replaced with the next randomly selected quadrat in the sequence. To reduce effects of local fish depletion, nets were set no less than 500 m apart.

Ten nets (2 shallow and 8 deep) were set in Bourque Lake between 2 and 4 October 2006 and were fished for an average of 23.0 h (range = 22.0 – 23.8 h) (Appendix 1). Ten nets (3 shallow and 7 deep) were set in Goodfish Lake between 28 and 30 September 2006 and were fished for an average of 23.1 h (range = 21.5 – 23.8 h) (Appendix 2). Sixteen nets (4 shallow and 12 deep) were set in Seibert Lake between 19 and 23 September 2006 and were fished for an average of 24.1 h (range = 23.3 – 25.5 h) (Appendix 3).

When a gill net was sampled, the number of each species captured was recorded and fish were separated into bags labelled with mesh size and net location (i.e., 102 mm mesh, grid 10, quadrat C). Once on shore, data on FL (± 1 mm), total weight (± 1 g), sex, state of maturity and age were collected following Morgan (2000). Fish were recorded as sexually mature if they appeared able to spawn during the next spawning season (Duffy et al. 2000). Ageing structures from each walleye were collected including otoliths and the first three rays of the left pelvic fin. Ages were determined according to Mackay et al. (1990).

Age‐class and length‐class distributions and length‐at‐age relationships were calculated from net catches. Following the AWMRP, 500 mm FL is the provincial standard for

assessing length‐at‐age relationships. Weight‐length and length‐age relationships were plotted to identify and investigate any outliers. Outliers were omitted if they were suspected to result from a measurement or recording error.

The length of the average walleye at a given age was predicted using the von Bertalanffy equation (von Bertalanffy 1938).

Lt = L∞ (1 – e ‐ k (t ‐ t0)) where:

Lt = length at age t

L∞ = maximum theoretical length that can be attained, k = coefficient of growth, t = age, in years (y), and

t0 = theoretical time, in years, when fork length would be 0 mm

L∞, k, and t0 were calculated using the Fishery Analysis and Simulation Tools ver. 3.0 (Slipke and Maceina 2006). The length‐at‐age data were fitted to the growth model by applying the equation independently to each average fork length per age‐class. Following Sullivan (1994), and Berry (1995) the walleye length‐at‐age data was plotted as FL at a given age.

A “bootstrap” technique was used to estimate mean catch rate (i.e., walleye/100 m2/24 h) and 95% confidence intervals (CI). Sullivan (2004) summarized that bootstrapping is a statistical procedure whereby an original sample of a population is subsequently re‐ sampled and a new mean calculated. Bootstrap samples are assumed to approximate the distribution of values that would have arisen from repeatedly sampling the original population (Haddon 2001). Re‐sampling thousands of times provides a distribution of possible means describing the likelihood of the true (population) mean being within that distribution (Sullivan 2004). This group of means from replicated data sets represents the distribution of possible means from data with the same scale of variation as observed in the original data set. In this study, 5000 possible means were created for each parameter. Empirical confidence intervals were then calculated following Haddon (2001). The final proportions (i.e., probability densities) were standardized to range between 0 and 1 (Paul et al. 2003).

All data collected during this study were stored in the Fisheries Management Information System (FMIS) maintained by ASRD.

4.0 RESULTS

4.1 Capture data

4.1.1 Bourque Lake

Nets set at Bourque Lake captured 98 walleye (Appendices 4 and 5). Estimated catch rate of walleye was 9.3 walleye/100 m2/24 h (95% CI = 4.8 ‐ 13.8, n = 10) (Figure 4). In addition, 72 yellow perch (Perca flavescens), 40 northern pike (Esox lucius), 72 lake whitefish (Coregonus clupeaformis), 12 cisco (Coregonus ardeti), 11 white sucker (Catostomus commersoni) and 1 longnose dace (Rhinichthys cataractae) were also captured (Appendices 4 and 5).

Figure 4. Standardized probability density function of walleye catch rate as sampled from Bourque Lake, Alberta in 2006 (mean = 9.3, 95% CI = 4.8 – 13.8, n = 10). Estimates are the means of the bootstrap estimates.

4.1.2 Goodfish Lake

Nets set at Goodfish Lake captured 155 walleye (Appendices 6 and 7). Estimated catch

rate of walleye was 14.6 walleye/100 m2/24 h (95% CI = 9.8 – 19.0, n = 155) (Figure 5). Also captured were 182 yellow perch, 123 northern pike, 5 lake whitefish, 1 burbot (Lota lota), 25 cisco, and 3 white sucker (Catostomus commersoni) (Appendices 6 and 7).

Figure 5. Standardized probability density function of walleye catch as sampled from Goodfish Lake, Alberta in 2006 (mean = 14.6, 95% CI = 9.8 – 19.0, n = 155). Estimates are the means of the bootstrap estimates.

4.1.3 Seibert Lake

Nets set at Seibert Lake captured 260 walleye (Appendices 8 and 9). Estimated catch rate of walleye was 14.8 walleye/100 m2/24 h (95% CI = 11.0 – 18.0, n = 260) (Figure 6). Also captured were 282 yellow perch, 30 northern pike, 306 lake whitefish, 11 white sucker, and 13 spottail shiners (Notropis hudsonius) (Appendices 8 and 9).

Figure 6. Standardized probability density function of walleye catch rate as sampled from Seibert Lake, Alberta in 2006 (mean = 14.8, 95% CI = 11.0 – 18.0, n = 260). Estimates are the means of the bootstrap estimates.

4.2 Walleye population structure

4.2.1 Bourque Lake

Walleye sampled from Bourque Lake displayed a broad and generally stable age‐class distribution with ages‐0 to 13 being represented (Figure 7). The mean age (± SE) of walleye was 4.9 ± 0.35 y (n = 98). Ages‐0, 7, 10 and 11 were the age‐classes least represented in the sample. Catch rates of the younger age‐classes (ages‐1 to 6) were relatively higher than older classes (ages‐7 to 13). Catch rate of each age‐class was < 2 walleye/100 m2/24 h.

2.0 24

2 m 1.5 100

1.0 (walleye

0.5 rate

0.0 Catch 01234567891011121314 Age (y)

Figure 7. Age‐class distribution of walleye sampled from Bourque Lake, Alberta in 2006 (mean age (± SE) = 4.9 ± 0.35 y, n = 96).

The youngest walleye sampled from Bourque Lake to reach 500 mm fork length (FL) was age‐8 (Figure 8). The average fish sampled reached 500 mm FL between ages‐10 and 11.

Figure 8. Length‐at‐age relationship for walleye sampled from Bourque Lake, Alberta in 2006 (k= 0.205, t0 =‐1.099, L∞ = 546.9 mm fork length, n = 96).

Of fish sampled, 32% (n = 31/98) of males and 5% (n = 5/98) of females were mature in 2006 (Figures 9 and 10). No male walleye sampled had reached maturity at age‐4, but 100% of males had reached maturity at age‐5 (Figure 9). No female walleye sampled had reached maturity at age‐6, but 100% were mature at age‐7 (Figure 10).

Figure 9. Age‐at‐maturity of male walleye sampled from Bourque Lake, Alberta in 2006.

Figure 10. Age‐at‐maturity of female walleye sampled from Bourque Lake, Alberta in 2006.

4.2.2 Goodfish Lake

Walleye sampled from Goodfish Lake displayed a narrow and unstable age‐class distribution with ages‐3, 5, and 6 supporting the fishery. Ages‐2, 4, 7, 8 and 9 were not abundant. No walleye older than age‐10 was represented (Figure 11). The mean age (± SE) of walleye was 5.2 ± 0.12 y (n = 155).

h) 6.0 24

2 5.0 m

100 4.0

3.0

(walleye 2.0

rate

1.0

0.0 Catch 0123456789101112 Age (y)

Figure 11. Age‐class distribution of walleye sampled from Goodfish Lake, Alberta in 2006 (mean age (± SE) = 5.2 ± 0.12 y, n = 155).

The youngest walleye sampled from Goodfish Lake to reach 500 mm FL was age‐8 (Figure 12). Very few large fish were caught and the average fish sampled did not reach 500 mm FL, with the predicted maximum FL of the average walleye being 488 mm (Figure 12).

550 500 450 (mm) 400

length 350

sample age and length data 300 Fork VB line 250 200 0123456789101112 Age (y)

Figure 12. Length‐at‐age relationship for walleye sampled from Goodfish Lake, Alberta in 2006. The raw data are represented by black diamonds and the von Bertalanffy growth curve is indicated by the solid line (k = 0.319, t0 = ‐ 0.092, L∞ = 487.9 mm fork length, n = 155).

Of fish sampled, 80% (n = 52/155) of males and 70% (n = 63/155) of females were mature in 2006 (Figures 13 and 14). No male walleye sampled had reached maturity at age‐3, but 100% of males had reached maturity at age‐4 (Figure 13). The earliest female walleye to reach maturity was age‐4, and > 50% of females were mature by age‐5. All females were mature by age‐6 (Figure 14).

h) 2.5 Mature males 24

2 2.0 Immature males m 100

1.5

1.0 (walleye

rate 0.5

Catch 0.0 0123456789101112 Age (y)

Figure 13. Age‐at‐maturity of male walleye sampled from Goodfish Lake, Alberta in 2006.

4.0 h) Mature females 24

Immature females 2

m 3.0 100

2.0 (walleye

1.0 rate

Catch 0.0 0123456789101112 Age (y)

Figure 14. Age‐at‐maturity of female walleye sampled from Goodfish Lake, Alberta in 2006.

4.2.3 Seibert Lake

Walleye sampled from Seibert Lake displayed a broad and unstable age‐class distribution with ages‐0 (young of the year, YOY) to 16 being represented (Figure 15). The fishery was supported by the three strongest age‐classes (ages‐7 to 9). The relative abundance of YOY walleye likely indicates a very successful spawning year and potentially high recruitment to the population. The mean age of walleye was 5.7 ± 0.24 y (n = 260).

4.0 h)

m 3.0 100

2.0 (walleye

1.0 rate

Catch 0.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Age (y)

Figure 15. Age‐class distribution of walleye sampled from Seibert Lake, Alberta in 2006 (mean age (± SE) = 5.7 ± 0.24 y, n = 260).

The youngest walleye sampled from Seibert Lake to reach 500 mm FL was age‐8 (Figure 16). The average fish reached 500 mm FL between ages‐13 and 14 (Figure 16).

600

500

400 (mm)

300 length

200 sample age and length data

Fork VB line 100

0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Age (y)

Figure 16. Length‐at‐age relationships for walleye sampled from Seibert Lake, Alberta in 2006. The raw data are represented by black diamonds and the von Bertalanffy growth curve is indicated by the solid line (k = 0.25, t0 = ‐1.18, L∞ = 514.95 mm fork length, n = 260).

Of fish sampled, 67% (n = 63/260) of males and 64% (n = 102/260) of females were mature in 2006 (Figures 17 and 18). Greater than 50% of male walleye sampled had reached maturity at age‐4, and 100% of males had reached maturity at age‐5 (Figure 17). More than 50% of females reached maturity by age‐6, and 100% were mature by age‐9 (Figure 18).

h) 2.0

Mature males 24

Immature males 2

m 1.5 100

1.0 (walleye

0.5 rate

Catch 0.0 01234567891011121314151617 Age (y)

Figure 17. Age‐at‐maturity of male walleye sampled from Seibert Lake, Alberta in 2006.

2.0 h) Mature females 24

2 Immature females

m 1.5 100

1.0 (walleye 0.5 rate

0.0 Catch 0 1 2 3 4 5 6 7 8 9 1011121314151617 Age (y)

Figure 18. Age‐at‐maturity of female walleye sampled from Seibert Lake, Alberta in 2006.

4.3 Stock assessment summaries

Walleye sampled from Bourque Lake displayed a broad and generally stable age‐class distribution, with the abundance of each age‐class being low and variable. The mean age of walleye sampled was 4.9 years. Walleye in Bourque Lake had moderate to slow growth with walleye reaching 500 mm FL between ages‐8 and 13. Female and male walleye were fully mature at age‐7 and 5, respectively.

Walleye sampled from Goodfish Lake displayed a narrow and unstable age‐class distribution with three of the nine age‐classes supporting the population. The mean age of walleye sampled was 5.2 years. Very few old and large (> 500 mm FL) walleye were caught and the average size of fish captured was less than 500 mm FL. All males were mature at age‐4. Greater than 50% of females were mature at age‐5 and all were mature at age‐6.

Walleye sampled from Seibert Lake displayed a broad and unstable age‐class distribution with YOY (age‐0) to age‐16 being represented. The age‐classes that were supporting the population were ages‐7 to 9 with all other age‐classes being weak (< 1 walleye/100 m2/24 h). The abundance of YOY walleye indicates a successful spawning season and a strong recruiting year‐class. The mean age of walleye sampled was 5.7 years. Walleye in Seibert Lake were slow‐growing reaching 500 mm FL at ages‐13 to 14. Greater than 50% of female and male walleye sampled were mature at age‐6 and 4, respectively.

5.0 LITERATURE CITED

Berry, D. 1995. Alberta’s walleye management and recovery plan. Alberta Fish and Wildlife Division, Edmonton, Alberta, Canada. 32 pp.

Duffy, M., J. McNulty, and T. Mosindy. 2000. Identification of sex, maturity and gonad condition of walleye Stizostedion vitreum vitreum. Ontario Ministry of Natural Resources, Thunder Bay, Ontario, Canada. 33 pp.

Government of Alberta. 2007. Internet Mapping Framework [online]. [http://imf.env.gov.ab.ca/imf/imf.jsp?site=bigmap]. Accessed 19 March 2007.

Haddon, M. 2001. Modeling and quantitative methods in fisheries. Chapman and Hall/CRC, Boca Raton, Florida, USA. 406 pp.

Mackay, W.C., G.R. Ash, and H.J. Norris. 1990. Fish ageing methods for Alberta. R.L. & R. Environmental Services Ltd. in association with Alberta Fish and Wildlife Division and University of Alberta, Edmonton, Alberta, Canada. 113 pp.

Mitchell, P., and E. Prepas. 1990. Atlas of Alberta lakes. University of Alberta Press, Edmonton, Alberta, Canada. 675 pp.

Morgan, G.E. 2000. Manual of instructions, Fall Walleye Index Netting (FWIN). Ontario Ministry of Natural Resources, Fish and Wildlife Branch, Peterborough, Ontario, Canada. 37 pp.

Paul, A.J., J.R. Post, and J.D. Stelfox. 2003. Can anglers influence the abundance of native and nonnative salmonids in a stream from the Canadian Rocky Mountains? North American Journal of Fisheries Management 23: 109–119.

Slipke, J., and M. Maceina. 2006. Fishery analyses and simulations tools (FAST), version 3.0. Auburn University, Department of Fisheries and Allied Aquacultures, Auburn, Alabama, USA.

Sullivan, M.G. 2003. Active management of walleye fisheries in Alberta: dilemmas of managing recovering fisheries. North America Journal of Fisheries Management 23: 1343‐1358.

Sullivan, M.G. 2004. Computer simulation of sport fishery parameters. Alberta Fish and Wildlife Division, Edmonton, Alberta, Canada. 16 pp.

Sullivan, M.G., and D. Park. 2004. Alberta walleye index netting protocols: summary of joint ACA/SRD index netting subcommittee. Alberta Fish and Wildlife Division and Alberta Conservation Association, Edmonton, Alberta, Canada. 13 pp.

Valastin, P., and M.G. Sullivan. 1997. A historical survey of sport fisheries in northeastern Alberta from 1920 to 1975. Alberta Sustainable Resource Development, Fish and Wildlife Service, Fisheries Management Enhancement Program Reports, Edmonton, Alberta, Canada. 45 pp.

6.0 APPENDICES

Appendix 1. Net location, set and pull times for survey of Bourque Lake, Alberta in 2006.

Set Depth UTM UTM Net soak number strata Easting Northing Net set Net pull (h) 1D Deep 529746 6060508 02‐Oct‐2006 03‐Oct‐2006 22.7 3D Deep 528632 6059569 02‐Oct‐2006 03‐Oct‐2006 22.0 8B Shallow 529376 6058182 02‐Oct‐2006 03‐Oct‐2006 22.5 10D Deep 529757 6056498 03‐Oct‐2006 04‐Oct‐2006 23.3 6C Shallow 529348 6058322 03‐Oct‐2006 04‐Oct‐2006 23.3 11A Deep 530102 6057047 03‐Oct‐2006 04‐Oct‐2006 23.3 9C Deep 530250 6057505 04‐Oct‐2006 05‐Oct‐2006 23.8 5B Deep 528762 6059010 04‐Oct‐2006 05‐Oct‐2006 23.5 7A Deep 528409 6058038 04‐Oct‐2006 05‐Oct‐2006 23.0 4C Deep 529256 6059507 04‐Oct‐2006 05‐Oct‐2006 22.8

Appendix 2. Net location, set and pull times for survey of Goodfish Lake, Alberta in 2006.

Set Depth UTM UTM Net soak number strata Easting Northing Net set Net pull (h) 4C Shallow 446598 6016654 28‐Sep‐2006 29‐Sep‐2006 21.5 11D Deep 446254 6013748 28‐Sep‐2006 29‐Sep‐2006 22.3 16A Deep 447425 6013400 28‐Sep‐2006 29‐Sep‐2006 23.0 8B Deep 445871 6015179 29‐Sep‐2006 30‐Sep‐2006 23.8 11B Deep 446064 6014201 29‐Sep‐2006 30‐Sep‐2006 23.5 6C Deep 446263 6015736 29‐Sep‐2006 30‐Sep‐2006 23.5 10C Deep 447153 6014891 29‐Sep‐2006 30‐Sep‐2006 23.5 12B Deep 446914 6014217 30‐Sep‐2006 01‐Oct‐2006 23.5 6B Shallow 446738 6016216 30‐Sep‐2006 01‐Oct‐2006 23.7 7D Shallow 447362 6015627 30‐Sep‐2006 01‐Oct‐2006 23.3

Appendix 3. Net location, set and pull times for survey of Seibert Lake, Alberta 2006.

Set Depth UTM UTM Net soak number strata Easting Northing Net set Net pull (h) 21C Deep 479738 6065241 19‐Sep‐2006 20‐Sep‐2006 24.0 35C Shallow 479660 6062422 19‐Sep‐2006 20‐Sep‐2006 24.5 48B Deep 482260 6059736 19‐Sep‐2006 20‐Sep‐2006 25.5 8A Deep 478732 6067669 20‐Sep‐2006 21‐Sep‐2006 23.7 42D Deep 482224 6061233 20‐Sep‐2006 21‐Sep‐2006 23.8 46A Deep 482683 6060750 20‐Sep‐2006 21‐Sep‐2006 23.5 2A Shallow 478737 6068740 21‐Sep‐2006 22‐Sep‐2006 24.0 37C Deep 481763 6062232 21‐Sep‐2006 22‐Sep‐2006 24.8 25C Deep 479754 6064235 21‐Sep‐2006 22‐Sep‐2006 24.2 24D Deep 479267 6064233 22‐Sep‐2006 23‐Sep‐2006 24.2 20A Deep 478746 6065740 22‐Sep‐2006 23‐Sep‐2006 24.2 16B Shallow 481209 6066734 22‐Sep‐2006 23‐Sep‐2006 24.2 42B Deep 482246 6061770 23‐Sep‐2006 24‐Sep‐2006 24.0 10C Deep 480745 6067256 23‐Sep‐2006 24‐Sep‐2006 23.8 13C Deep 477776 6066255 23‐Sep‐2006 24‐Sep‐2006 23.5 33A Shallow 482449 6063753 23‐Sep‐2006 24‐Sep‐2006 23.3

Appendix 4. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Bourque Lake, Alberta in 2006.

Yellow Lake Non‐ Set Depth Walleye Northern perch whitefish sportfish number strata catch pike catch catch catch catch 1D Deep 1 4 2 5 3 3D Deep 3 0 1 3 1 8B Shallow 1 5 2 14 0 10D Deep 21 3 9 3 0 6C Shallow 3 9 2 6 1 11A Deep 20 10 40 2 1 9C Deep 13 1 0 16 4 5B Deep 5 1 6 5 0 7A Deep 19 3 8 1 2 4C Deep 12 4 2 17 1

Appendix 5. Biological data collected during survey of Bourque Lake, Alberta in 2006. Abbreviations: M = male, F = female, U = unidentified, YLPR = yellow perch, LKWH = lake whitefish, WALL = walleye, CISC = cisco, NRPK = northern pike, WHSC = white sucker, LNDC = long‐nose dace.

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 1 YLPR 99 11 M Immature 2 YLPR 97 10 F Immature 3 LKWH 98 10 U Immature 4 WALL 509 1536 F Mature 8 5 NRPK 585 1226 F Mature 6 LKWH 197 80 M Immature 7 CISC 200 108 F Immature 8 CISC 212 124 M Immature 9 NRPK 610 1615 F Mature 10 NRPK 604 1465 M Mature 11 LKWH 394 886 M Mature 12 NRPK 517 920 M Mature 13 LKWH 310 382 F Mature 14 CISC 289 377 F Mature 15 LKWH 523 2212 16 YLPR 96 11 M 17 WALL 373 547 M Mature 5 18 LKWH 380 815 M Mature 19 WALL 495 1420 M Mature 10 20 LKWH 500 1816 F Mature 21 LKWH 404 993 M Mature 22 CISC 316 529 F Mature 23 WALL 541 1969 F Mature 9 24 WHSC 483 1761 F Mature 25 YLPR 114 16 F Immature 26 YLPR 98 11 M 27 NRPK 550 1173 M Mature 28 LKWH 386 777 M Mature 29 NRPK 449 623 F Mature 30 NRPK 549 1251 M Mature 31 NRPK 463 636 F Mature 32 WALL 504 1450 M Mature 13 33 NRPK 655 1947 M Mature 34 LKWH 594 1499 M Mature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 35 LKWH 395 884 M Mature 36 LKWH 412 1095 F Mature 37 LKWH 416 1073 F Mature 38 LKWH 428 1141 M Mature 39 LKWH 532 2183 M Mature 40 LKWH 540 2212 F Mature 41 LKWH 444 1280 F Mature 42 LKWH 547 2398 F Mature 43 LKWH 419 1097 M Mature 44 LKWH 522 2232 M Mature 45 LKWH 468 1797 F Mature 46 LKWH 533 2129 F Mature 47 YLPR 94 12 F Immature 48 YLPR 100 12 M Mature 49 YLPR 102 15 M Immature 50 WALL 184 51 M Immature 1 51 WALL 175 48 M Immature 1 52 WALL 180 52 F Immature 1 53 WALL 364 456 F Immature 4 54 NRPK 574 1614 F Mature 55 YLPR 148 42 F Immature 56 YLPR 150 41 F Mature 57 YLPR 135 29 M Mature 58 YLPR 143 35 M Mature 59 YLPR 164 53 M Mature 60 YLPR 138 33 M Mature 61 LKWH 187 79 M Immature 62 WALL 500 1593 M Mature 9 63 WALL 265 173 2 64 WALL 296 243 F Immature 3 65 WALL 432 901 F Immature 4 66 WALL 473 1238 M Mature 6 67 WALL 455 1126 M Mature 8 68 WALL 419 771 F Immature 6 69 WALL 460 1089 M Mature 9 70 WALL 320 321 F Immature 5 71 WALL 287 223 M Immature 3 72 NRPK 654 2163 M Mature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 73 WALL 445 959 M Mature 6 74 WALL 429 826 F Immature 5 75 WALL 378 581 F Immature 5 76 NRPK 628 1827 F Mature 77 WALL 510 1544 F Mature 8 78 WALL 466 1060 M Mature 9 79 WALL 503 1578 M Mature 8 80 WALL 513 1490 M Mature 13 81 LKWH 355 566 F Mature 82 LKWH 457 1463 F Mature 83 YLPR 100 12 M Immature 84 YLPR 103 12 F Immature 85 LNDC 110 17 F Immature 86 NRPK 591 1528 M Mature 87 NRPK 589 1347 M Mature 88 NRPK 330 253 F Mature 89 NRPK 419 506 F Mature 90 WALL 496 1244 M Mature 11 91 NRPK 577 1508 F Mature 92 NRPK 495 919 M Mature 93 NRPK 490 741 F Mature 94 WALL 258 157 M Immature 2 95 NRPK 482 847 M Mature 96 NRPK 513 920 M Mature 97 LKWH 338 557 M Mature 98 LKWH 425 1048 F Mature 99 LKWH 333 502 F Mature 100 WALL 463 1099 F Mature 7 101 LKWH 604 3484 F Mature 102 LKWH 434 1247 F Mature 103 WHSC 466 1654 F Mature 104 LKWH 390 862 F Mature 105 YLPR 99 14 M Immature 106 YLPR 98 13 F Immature 107 YLPR 102 12 F Immature 108 YLPR 112 18 F Immature 109 YLPR 94 10 F Immature 110 YLPR 104 14 F Immature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 111 YLPR 98 14 M Immature 112 YLPR 95 11 M Immature 113 YLPR 101 12 F Immature 114 YLPR 100 11 M Mature 115 YLPR 102 12 M Mature 116 YLPR 99 15 M Mature 117 YLPR 104 13 M Mature 118 YLPR 107 12 F Immature 119 YLPR 101 12 F Immature 120 YLPR 99 9 M Mature 121 YLPR 98 12 M Immature 122 YLPR 100 12 M Mature 123 YLPR 101 12 M Immature 124 YLPR 98 11 M Immature 125 YLPR 103 13 F Immature 126 YLPR 97 9 M Immature 127 YLPR 115 18 F Immature 128 YLPR 96 14 M Mature 129 YLPR 98 12 M Immature 130 YLPR 96 13 M Mature 131 YLPR 98 12 F Immature 132 YLPR 104 13 M Mature 133 YLPR 101 10 M Immature 134 YLPR 97 10 M Mature 135 YLPR 97 12 M Immature 136 YLPR 99 12 M Immature 137 YLPR 99 15 M Mature 138 YLPR 99 13 M Immature 139 WALL 186 60 F Immature 1 140 WALL 170 50 F Immature 1 141 WALL 245 134 F Immature 2 142 WALL 205 77 F Immature 1 143 NRPK 610 1709 F Mature 144 NRPK 597 1659 F Mature 145 YLPR 135 35 F Immature 146 YLPR 141 45 M Mature 147 YLPR 137 36 M Mature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 148 YLPR 146 36 M Mature 149 WALL 361 430 F Immature 4 150 WALL 350 398 M Immature 4 151 WALL 292 240 M Immature 3 152 WALL 218 88 M Immature 2 153 WALL 250 49 M Immature 2 154 NRPK 583 1463 M Mature 155 NRPK 590 1663 M Mature 156 YLPR 170 75 M Mature 157 YLPR 199 106 M Mature 158 LKWH 198 99 M Immature 159 LKWH 200 99 F Immature 160 CISC 196 108 M Mature 161 WALL 404 736 M Mature 5 162 WALL 290 242 M Immature 3 163 WALL 286 234 F Immature 3 164 WALL 320 290 F Immature 3 165 WALL 297 240 F Immature 3 166 NRPK 515 963 M Mature 167 NRPK 535 1214 M Mature 168 NRPK 535 1152 M Mature 169 WALL 491 1386 M Mature 8 170 WALL 354 478 M Immature 4 171 NRPK 564 1261 M Mature 172 NRPK 779 3664 F Mature 173 WALL 440 1021 M Mature 7 174 WALL 456 1031 M Mature 8 175 NRPK 637 1904 F Mature 176 WHSC 425 1252 M Mature 177 WHSC 492 1829 F Mature 178 WALL 524 1715 M Mature 12 179 WALL 499 1486 M Mature 12 180 LKWH 98 10 M Immature 181 CISC 101 14 F Immature 182 WALL 175 52 M Immature 1 183 WALL 187 64 F Immature 1 184 WALL 180 49 M Immature 1 185 WALL 186 60 M Immature 1

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 186 WALL 198 72 M Immature 1 187 LKWH 542 2433 M Mature 188 LKWH 267 262 M Mature 189 LKWH 265 245 M Mature 190 WALL 329 308 M Immature 3 191 WALL 334 351 F Immature 5 192 LKWH 237 161 F Immature 193 LKWH 273 257 F Immature 194 LKWH 198 92 F Immature 195 LKWH 200 103 F Immature 196 LKWH 254 211 F Mature 197 CISC 257 277 M Mature 198 WALL 445 908 F Immature 6 199 WALL 480 1302 M Mature 13 200 WALL 376 498 M Mature 6 201 WALL 374 497 F Immature 5 202 WALL 367 477 F Immature 5 203 LKWH 326 468 F Mature 204 CISC 287 374 F Mature 205 CISC 332 617 F Mature 206 WALL 501 1416 M Mature 10 207 NRPK 604 1727 F Mature 208 LKWH 510 1954 M Mature 209 LKWH 515 2049 F Mature 210 LKWH 522 1922 M Mature 211 LKWH 418 1086 M Mature 212 LKWH 508 2172 F Mature 213 LKWH 514 1910 M Mature 214 YLPR 128 29 M Mature 215 YLPR 95 9 M Immature 216 YLPR 145 38 F Immature 217 YLPR 142 35 M Mature 218 YLPR 148 44 M Immature 219 YLPR 167 65 F Immature 220 LKWH 182 75 F Immature 221 WALL 298 251 F Immature 4 222 WALL 254 147 M Immature 3 223 WALL 396 626 F Immature 5

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 224 WALL 460 1123 M Mature 9 225 LKWH 274 251 F Mature 226 LKWH 335 491 M Mature 227 WHSC 250 213 F Immature 228 WALL 505 1415 M Mature 12 229 LKWH 326 460 F Mature 230 NRPK 650 1812 231 LKWH 385 849 F Mature 232 WHSC 419 1070 M Mature 233 WALL 125 17 F Immature 0 234 YLPR 97 10 M Immature 235 YLPR 113 16 F Immature 236 YLPR 95 9 M Immature 237 WALL 193 58 M Immature 1 238 WALL 237 119 M Immature 2 239 WALL 257 138 F Immature 2 240 WALL 178 50 F Immature 1 241 WALL 167 41 M Immature 1 242 WALL 174 49 F Immature 1 243 WALL 192 62 M Immature 1 244 WALL 176 48 M Immature 1 245 YLPR 144 37 F Immature 246 YLPR 133 30 M Mature 247 YLPR 132 25 M Mature 248 YLPR 140 32 F Immature 249 YLPR 133 29 F Immature 250 WALL 333 340 3 251 WALL 240 134 M Mature 2 252 NRPK 380 416 F Immature 253 WHSC 226 165 M Immature 254 WHSC 210 130 M Immature 255 WHSC 243 200 F Immature 256 WHSC 228 177 M Immature 257 WALL 337 374 M Immature 4 258 WALL 415 725 F Immature 6 259 WALL 262 171 M Immature 2 260 WALL 442 873 M Mature 12 261 WALL 426 853 M Mature 6 262 NRPK 415 477 M Mature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 263 LKWH 428 1148 F Mature 264 CISC 290 389 M Mature 265 WALL 374 788 F Immature 5 266 WALL 338 405 F Immature 4 267 WALL 397 715 M Mature 5 268 NRPK 477 740 M Mature 269 CISC 294 448 M Mature 270 CISC 101 14 U Immature 271 WALL 227 103 F Immature 2 272 WALL 372 547 M Immature 4 273 WALL 257 145 F Immature 2 274 WALL 245 132 F Immature 2 275 WALL 261 150 M Immature 2 276 NRPK 553 1054 F Mature 277 NRPK 765 3338 F Mature 278 YLPR 195 93 F Immature 279 YLPR 189 82 F Immature 280 LKWH 269 276 M Mature 281 WHSC 214 110 F Immature 282 WALL 418 740 F Immature 5 283 LKWH 293 304 F Mature 284 LKWH 270 250 M Mature 285 WALL 396 685 M Mature 6 286 WALL 403 682 M Mature 5 287 WALL 362 493 M Mature 5 288 NRPK 631 1868 F Mature 289 NRPK 613 1516 F Mature 290 LKWH 279 263 M Mature 291 LKWH 259 231 F Mature 292 LKWH 318 409 F Mature 293 LKWH 336 454 M Mature 294 LKWH 283 306 F Immature 295 LKWH 357 543 M Mature 296 LKWH 387 801 F Mature 297 WALL 523 1496 F Mature 10 298 WALL 497 1403 M Mature 11 299 WALL 512 1578 M Mature 12 300 LKWH 398 843 F Mature

Appendix 5. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 301 LKWH 430 1062 F Mature 302 LKWH 418 1032 M Mature 303 LKWH 412 969 M Mature 304 LKWH 399 939 M Mature 305 LKWH 421 1091 M Mature 306 LKWH 408 1080 M Mature

Appendix 6. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Goodfish Lake, Alberta in 2006.

Yellow Lake Non‐ Set Depth Walleye Northern perch whitefish sportfish number strata catch pike catch catch catch catch 4C Shallow 4 15 20 0 3 11D Deep 20 4 3 1 3 16A Deep 17 14 8 0 1 8B Deep 20 17 11 0 9 11B Deep 20 8 10 0 5 6C Deep 23 18 11 0 4 10C Deep 13 7 11 1 1 12B Deep 27 7 20 1 0 6B Shallow 1 22 14 1 3 7D Shallow 10 11 74 1 1

Appendix 7. Biological data collected during survey of Goodfish Lake, Alberta in 2006. Abbreviations: M = male, F = female, U = unidentified. YLPR = yellow perch, LKWH = lake whitefish, WALL = walleye, CISC = cisco, NRPK = northern pike, WHSC = white sucker.

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 1 NRPK 535 1064 F Mature 4 2 YLPR 106 14 M Mature 3 YLPR 94 11 F Immature 4 YLPR 94 10 F Immature 5 YLPR 100 12 F Immature 6 YLPR 92 10 M Immature 7 YLPR 91 11 M Mature 8 YLPR 98 12 M Mature 9 YLPR 103 12 M Mature 10 YLPR 95 11 F Mature 11 YLPR 95 10 F Immature 12 YLPR 91 10 M Immature 13 YLPR 100 13 F Immature 14 NRPK 586 1528 F Mature 6 15 NRPK 530 1068 M Mature 5 16 NRPK 498 959 F Mature 3 17 YLPR 140 34 M Mature 18 YLPR 150 55 M Mature 19 YLPR 148 40 M Mature 20 YLPR 145 42 M Mature 21 YLPR 138 35 F Immature 22 YLPR 134 31 M Mature 23 NRPK 530 1089 M Mature 5 24 YLPR 175 78 M Mature 25 CISC 388 966 F Mature 26 NRPK 505 942 M Mature 4 27 NRPK 565 1224 F Mature 5 28 NRPK 539 1121 M Mature 5 29 WALL 396 655 M Mature 6 30 WALL 387 627 F Mature 5 31 NRPK 515 1152 M Mature 4 32 NRPK 495 905 F Mature 4 33 NRPK 600 1584 F Mature 6 34 NRPK 508 941 M Mature 4 35 NRPK 531 1118 F Mature 4 36 NRPK 518 788 F Mature 5

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 37 NRPK 558 1235 F Mature 4 38 WALL 449 1047 F Mature 7 39 WALL 442 963 F Mature 6 40 CISC 400 1078 F Mature 41 CISC 373 808 M Mature 42 YLPR 90 8 F Immature 43 YLPR 88 8 F Immature 44 YLPR 160 52 M Mature 45 WALL 299 273 F Immature 3 46 WALL 403 757 F Mature 5 47 WALL 406 751 F Mature 6 48 WALL 408 728 F Mature 6 49 WALL 393 669 M Mature 6 50 WALL 442 952 F Mature 6 51 WALL 378 567 M Mature 5 52 WALL 265 195 F Immature 3 53 WALL 399 696 M Mature 6 54 WALL 385 619 F Mature 5 55 WALL 423 904 F Mature 6 56 WALL 300 277 F Immature 3 57 NRPK 536 929 F Mature 4 58 WALL 398 655 F Mature 6 59 WALL 416 821 M Mature 9 60 WALL 415 817 M Mature 8 61 WALL 352 517 F Mature 6 62 WALL 375 552 M Mature 5 63 NRPK 589 1360 F Mature 5 64 NRPK 615 1492 F Mature 6 65 NRPK 435 1010 M Mature 3 66 WALL 418 832 F Mature 6 67 WALL 495 1278 F Mature 9 68 LKWH 370 650 M Mature 69 WHSC 430 1149 F Mature 70 WHSC 396 1070 M Mature 71 WALL 510 1564 F Mature 8 72 WHSC 480 1435 F Mature 73 YLPR 95 11 F Immature 74 YLPR 96 10 M Immature 75 YLPR 94 11 M Mature 76 NRPK 590 1290 F Mature 5

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 77 YLPR 160 55 F Immature 78 YLPR 124 34 M Mature 79 YLPR 147 37 M Mature 80 WALL 388 597 M Mature 5 81 WALL 411 752 F Mature 6 82 WALL 393 634 M Mature 6 83 WALL 418 870 M Mature 6 84 WALL 275 206 F Immature 3 85 WALL 382 608 M Mature 5 86 NRPK 529 1023 M Mature 5 87 NRPK 515 1091 M Mature 4 88 NRPK 444 612 F Mature 3 89 YLPR 172 68 F Immature 90 WALL 401 722 F Mature 5 91 WALL 405 715 F Mature 6 92 WALL 404 702 M Mature 6 93 WALL 290 265 F Immature 3 94 WALL 284 231 M Immature 3 95 WALL 320 316 F Immature 3 96 WALL 277 232 M Immature 3 97 NRPK 535 1034 M Mature 4 98 NRPK 510 792 F Mature 4 99 NRPK 555 1098 F Mature 4 100 YLPR 240 209 F Mature 101 WALL 380 576 M Mature 5 102 WALL 394 681 F Mature 5 103 NRPK 490 796 M Mature 4 104 NRPK 530 1032 M Mature 4 105 NRPK 519 995 M Mature 5 106 NRPK 510 938 M Mature 5 107 NRPK 526 1031 M Mature 4 108 NRPK 485 834 M Mature 4 109 WALL 380 605 M Mature 6 110 WALL 439 913 F Mature 6 111 NRPK 594 1499 F Mature 5 112 CISC 484 861 M Mature 113 NRPK 537 982 F Mature 4 114 YLPR 95 10 F Immature 115 YLPR 103 13 M Mature 116 YLPR 96 12 M Mature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 117 YLPR 103 13 M Mature 118 YLPR 94 10 F Immature 119 YLPR 96 11 F Immature 120 YLPR 98 11 F Immature 121 WALL 365 557 M Mature 6 122 NRPK 518 1088 M Mature 4 123 NRPK 485 914 M Mature 4 124 NRPK 503 955 M Mature 5 125 NRPK 517 1021 F Mature 4 126 YLPR 140 39 M Mature 127 YLPR 138 33 F Immature 128 YLPR 141 36 F Immature 129 YLPR 142 34 F Immature 130 CISC 395 893 M Mature 131 WALL 287 245 M Immature 3 132 WALL 392 705 F Mature 6 133 WALL 443 931 F Mature 6 134 WALL 433 840 M Mature 8 135 NRPK 525 937 M Mature 5 136 WALL 293 250 F Immature 3 137 WALL 275 206 M Immature 3 138 WALL 307 290 F Immature 3 139 WALL 393 663 F Mature 5 140 WALL 381 534 F Immature 5 141 WALL 415 760 M Mature 6 142 WALL 433 840 F Mature 6 143 NRPK 509 913 M Mature 4 144 NRPK 515 998 M Mature 5 145 NRPK 555 1059 M Mature 5 146 NRPK 528 1156 M Mature 4 147 CISC 385 763 M Mature 148 WALL 405 720 M Mature 6 149 WALL 418 761 F Mature 6 150 WALL 417 777 F Mature 6 151 WALL 354 446 M Mature 5 152 WALL 424 822 F Mature 6 153 WALL 335 426 M Mature 5 154 NRPK 505 953 M Mature 5 155 NRPK 497 960 M Mature 4 156 NRPK 547 1155 F Mature 5

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 157 NRPK 550 1050 F Mature 5 158 NRPK 561 1246 F Mature 5 159 NRPK 507 950 M Mature 4 160 CISC 381 851 M Mature 161 CISC 396 876 F Mature 162 WALL 483 1240 F Mature 7 163 WALL 482 1289 F Mature 8 164 NRPK 774 3602 F Mature 9 165 CISC 380 802 F Mature 166 CISC 380 840 M Mature 167 CISC 392 958 F Mature 168 CISC 414 844 M Mature 169 CISC 379 791 M Mature 170 YLPR 100 13 M Mature 171 YLPR 94 10 F Immature 172 YLPR 86 8 F Immature 173 YLPR 95 10 M Mature 174 YLPR 180 70 F Mature 175 YLPR 135 28 M Mature 176 YLPR 167 58 M Immature 177 CISC 163 53 M Immature 178 CISC 165 50 F Immature 179 WALL 426 870 F Mature 6 180 WALL 380 688 M Mature 6 181 WALL 395 672 M Mature 6 182 WALL 390 621 M Mature 6 183 WALL 353 491 M Mature 5 184 WALL 428 710 F Mature 6 185 WALL 385 633 M Mature 5 186 NRPK 540 911 F Mature 4 187 NRPK 540 1104 M Mature 4 188 YLPR 170 66 M Mature 189 YLPR 184 85 F Mature 190 YLPR 192 93 F Immature 191 WALL 453 972 F Mature 7 192 WALL 397 660 M Mature 6 193 WALL 420 788 F Mature 6 194 WALL 438 900 F Mature 6 195 WALL 370 557 M Mature 6 196 WALL 275 205 F Immature 3

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 197 WALL 302 297 F Immature 3 198 NRPK 553 1127 F Mature 5 199 NRPK 543 1072 F Mature 5 200 YLPR 216 143 F Mature 201 WALL 400 753 F Mature 6 202 WALL 375 550 M Mature 5 203 WALL 378 609 F Mature 4 204 NRPK 544 993 F Mature 5 205 NRPK 562 1077 F Mature 5 206 NRPK 534 988 F Mature 4 207 WALL 430 912 F Mature 6 208 WALL 453 1034 M Mature 10 209 WALL 504 1605 F Mature 8 210 NRPK 660 1873 F Mature 7 211 CISC 398 857 M Mature 212 CISC 406 991 F Mature 213 NRPK 505 860 M Mature 4 214 YLPR 93 9 M Immature 215 YLPR 93 10 F Immature 216 YLPR 91 9 M Mature 217 YLPR 95 10 M Mature 218 YLPR 90 9 F Immature 219 YLPR 92 9 M Immature 220 YLPR 93 10 M Mature 221 YLPR 94 10 M Immature 222 YLPR 106 16 F Immature 223 YLPR 100 13 F Immature 224 NRPK 502 964 M Mature 4 225 NRPK 585 1351 F Mature 6 226 NRPK 560 1218 F Mature 4 227 WALL 365 534 M Mature 5 228 WALL 402 724 F Mature 6 229 WALL 371 571 M Mature 5 230 WALL 302 306 F Immature 3 231 WALL 309 294 F Immature 3 232 WALL 300 275 F Immature 3 233 NRPK 525 1020 M Mature 4 234 NRPK 543 1171 M Mature 4 235 NRPK 480 820 M Mature 4 236 YLPR 185 86 F Mature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 237 CISC 380 760 M Mature 238 WALL 286 223 M Immature 3 239 WALL 303 271 M Immature 3 240 WALL 290 254 F Immature 3 241 WALL 299 271 M Immature 3 242 WALL 377 530 F Immature 5 243 WALL 378 593 F Immature 4 244 WALL 405 742 M Mature 6 245 WALL 380 594 F Mature 6 246 WALL 403 750 M Mature 6 247 NRPK 569 1222 F Mature 4 248 NRPK 513 991 M Mature 4 249 CISC 373 814 M Mature 250 WALL 377 558 M Mature 5 251 WALL 382 629 M Mature 5 252 WALL 413 751 F Mature 6 253 WALL 403 745 F Mature 6 254 NRPK 575 1198 F Mature 5 255 NRPK 497 799 M Mature 4 256 NRPK 507 903 M Mature 4 257 NRPK 521 1087 F Mature 3 258 NRPK 540 1148 M Mature 5 259 NRPK 543 1068 M Mature 5 260 CISC 360 652 M Mature 261 WALL 428 898 F Mature 6 262 WALL 420 870 F Mature 6 263 WALL 404 772 M Mature 5 264 WALL 392 684 M Mature 6 265 NRPK 575 1124 F Mature 5 266 CISC 388 940 M Mature 267 NRPK 522 972 M Mature 5 268 NRPK 531 924 F Mature 4 269 YLPR 94 10 F Immature 270 YLPR 90 9 F Immature 271 YLPR 90 9 M Immature 272 YLPR 97 11 F Immature 273 YLPR 94 9 M Mature 274 YLPR 98 11 F Immature 275 YLPR 95 10 M Mature 276 YLPR 91 10 F Immature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 277 YLPR 85 8 278 YLPR 100 12 F Immature 279 WALL 326 380 F Immature 3 280 NRPK 516 980 M Mature 4 281 YLPR 130 37 F Immature 282 WALL 382 655 M Mature 5 283 WALL 393 680 F Mature 5 284 NRPK 530 989 M Mature 5 285 WALL 291 242 F Immature 3 286 WALL 430 904 F Mature 6 287 WALL 430 898 F Mature 6 288 NRPK 586 1323 F Mature 4 289 NRPK 528 1056 F Mature 4 290 NRPK 556 1195 F Mature 5 291 WALL 430 848 F Mature 6 292 WALL 433 893 F Mature 6 293 WALL 410 766 F Mature 6 294 WALL 386 627 M Mature 5 295 WALL 403 676 F Mature 6 296 NRPK 558 1339 F Mature 4 297 NRPK 514 1051 M Mature 5 298 WALL 473 1125 F Mature 7 299 WALL 471 1110 F Mature 7 300 LKWH 363 646 F Mature 301 NRPK 530 1022 M Mature 5 302 NRPK 513 916 M Mature 4 303 YLPR 102 12 M Mature 304 YLPR 98 12 M Immature 305 YLPR 89 9 M Mature 306 YLPR 92 9 M Mature 307 YLPR 95 10 M Mature 308 YLPR 95 10 M Mature 309 YLPR 92 9 M Immature 310 YLPR 95 11 M Immature 311 NRPK 528 1026 M Mature 5 312 YLPR 154 59 F Immature 313 YLPR 128 29 M Mature 314 YLPR 141 42 M Mature 315 YLPR 142 38 316 YLPR 143 38 F Immature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 317 YLPR 130 30 M Mature 318 YLPR 137 33 319 YLPR 157 52 M Mature 320 YLPR 177 72 F Mature 321 YLPR 125 29 M Mature 322 WALL 354 493 M Mature 4 323 WALL 377 572 M Mature 5 324 WALL 244 138 M Immature 2 325 NRPK 498 911 M Mature 4 326 NRPK 513 811 F Mature 4 327 YLPR 165 64 M Mature 328 YLPR 196 105 F Immature 329 WALL 320 343 F Immature 3 330 WALL 393 651 F Mature 5 331 WALL 374 563 M Mature 5 332 WALL 334 430 F Immature 4 333 WALL 377 597 M Mature 5 334 WALL 285 251 F Immature 3 335 WALL 260 206 M Immature 3 336 WALL 317 305 F Immature 3 337 WALL 409 866 F Mature 5 338 WALL 380 553 M Mature 5 339 WALL 308 304 M Immature 3 340 WALL 381 557 F Immature 5 341 WALL 400 753 F Mature 5 342 WALL 429 891 F Mature 6 343 WALL 392 723 M Mature 5 344 WALL 446 1057 F Mature 6 345 WALL 365 504 F Immature 4 346 WALL 347 463 M Mature 4 347 WALL 423 1321 F Mature 7 348 NRPK 462 704 M Mature 4 349 NRPK 575 1322 F Mature 6 350 WALL 405 800 M Mature 6 351 WALL 483 1224 F Mature 7 352 WALL 426 857 F Mature 6 353 WALL 430 933 F Mature 6 354 WALL 447 1033 M Mature 8 355 LKWH 418 976 M Mature 356 NRPK 525 1006 M Mature 4

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 357 YLPR 99 11 F Immature 358 YLPR 92 11 M Immature 359 YLPR 104 13 M Mature 360 YLPR 95 10 M Mature 361 YLPR 95 10 M Immature 362 YLPR 92 10 F Immature 363 YLPR 105 16 M Mature 364 NRPK 485 892 M Mature 3 365 NRPK 510 928 M Mature 4 366 NRPK 480 844 M Mature 3 367 YLPR 132 28 M Mature 368 YLPR 130 28 F Immature 369 YLPR 139 35 F Immature 370 YLPR 139 34 M Mature 371 YLPR 139 36 F Immature 372 NRPK 506 985 M Mature 5 373 NRPK 521 1091 M Mature 5 374 NRPK 590 1424 F Mature 5 375 NRPK 505 912 M Mature 5 376 NRPK 505 1016 M Mature 5 377 YLPR 185 86 F Mature 378 YLPR 175 69 F Mature 379 CISC 352 799 F Mature 380 WALL 406 720 M Mature 6 381 NRPK 540 1042 M Mature 5 382 NRPK 545 1245 F Mature 5 383 NRPK 523 1013 M Mature 5 384 NRPK 510 963 M Mature 4 385 NRPK 506 899 M Mature 4 386 NRPK 558 1291 F Mature 5 387 NRPK 484 815 M Mature 4 388 NRPK 523 1076 M Mature 5 389 NRPK 535 982 M Mature 5 390 NRPK 510 842 M Mature 5 391 NRPK 532 1047 M Mature 5 392 NRPK 514 974 M Mature 5 393 NRPK 492 700 M Mature 4 394 LKWH 402 817 M Mature 395 CISC 380 781 M Mature 396 CISC 400 979 F Mature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 397 YLPR 92 10 M Mature 398 YLPR 98 11 M Immature 399 YLPR 91 9 M Immature 400 YLPR 93 9 F Immature 401 YLPR 90 9 F Immature 402 YLPR 92 10 F Immature 403 YLPR 91 11 F Immature 404 YLPR 94 10 F Immature 405 YLPR 97 13 M Mature 406 YLPR 96 10 M Immature 407 YLPR 94 10 M Mature 408 YLPR 97 11 M Mature 409 YLPR 91 10 F Immature 410 YLPR 93 11 M Immature 411 YLPR 97 12 F Immature 412 YLPR 96 11 M Mature 413 YLPR 105 15 M Mature 414 YLPR 95 10 M Immature 415 YLPR 103 14 F Immature 416 YLPR 100 15 M Mature 417 YLPR 95 11 M Mature 418 YLPR 100 12 M Mature 419 YLPR 93 11 F Immature 420 YLPR 105 15 F Immature 421 YLPR 95 13 M Mature 422 NRPK 433 700 M Mature 3 423 NRPK 557 1436 F Mature 6 424 NRPK 555 1160 F Mature 6 425 YLPR 138 36 F Immature 426 YLPR 126 26 M Mature 427 YLPR 132 31 F Immature 428 YLPR 146 40 M Mature 429 YLPR 142 36 F Immature 430 YLPR 132 32 M Mature 431 YLPR 130 30 M Mature 432 YLPR 141 38 F Immature 433 YLPR 141 36 M Mature 434 YLPR 137 32 F Immature 435 YLPR 149 46 M Mature 436 YLPR 140 38 M Mature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 437 YLPR 143 43 M Mature 438 YLPR 141 36 M Mature 439 YLPR 137 39 M Mature 440 YLPR 143 39 M Mature 441 YLPR 145 87 M Mature 442 YLPR 149 43 F Immature 443 YLPR 136 34 M Mature 444 YLPR 142 36 M Mature 445 YLPR 143 38 M Mature 446 YLPR 143 39 M Mature 447 YLPR 154 54 M Mature 448 YLPR 146 41 M Mature 449 YLPR 142 41 M Mature 450 YLPR 142 40 M Mature 451 YLPR 162 60 M Mature 452 YLPR 157 55 M Mature 453 YLPR 138 34 F Immature 454 YLPR 147 43 M Mature 455 YLPR 144 40 M Mature 456 YLPR 170 75 M Mature 457 YLPR 188 83 F Mature 458 WALL 270 210 M Immature 3 459 WALL 323 342 F Immature 3 460 WALL 312 291 M Immature 3 461 WALL 317 326 F Immature 3 462 WALL 302 284 M Immature 3 463 YLPR 175 77 F Mature 464 YLPR 180 76 M Mature 465 YLPR 168 69 M Mature 466 YLPR 184 95 M Mature 467 YLPR 184 91 F Mature 468 YLPR 176 74 F Mature 469 YLPR 177 74 F Mature 470 YLPR 164 59 M Mature 471 YLPR 189 83 F Mature 472 YLPR 176 76 F Mature 473 YLPR 172 69 M Mature 474 YLPR 181 82 F Mature 475 YLPR 175 70 F Mature 476 YLPR 185 88 F Mature

Appendix 7. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 477 WALL 402 650 M Mature 6 478 NRPK 500 1087 M Mature 5 479 NRPK 549 1135 F Mature 5 480 NRPK 486 910 F Mature 3 481 NRPK 533 1183 M Immature 5 482 YLPR 241 180 F Mature 483 YLPR 230 167 F Mature 484 WALL 347 455 M Mature 4 485 WALL 402 719 M Mature 6 486 NRPK 498 856 M Mature 4 487 NRPK 554 1208 M Mature 5 488 NRPK 574 1238 F Mature 6 489 NRPK 596 1464 F Mature 6 490 WALL 439 994 F Mature 6 491 WALL 419 827 F Mature 6 492 CISC 392 951 F Mature 493 LKWH 452 115 M Mature

Appendix 8. Catch of walleye, northern pike, yellow perch, and whitefish during survey of Seibert Lake, Alberta in 2006.

Yellow Northern Lake Non‐ Set Depth Walleye perch pike whitefish sportfish number strata catch catch catch catch catch 21C Deep 11 26 0 16 0 35C Shallow 2 0 2 10 1 48B Deep 18 13 7 26 1 8A Deep 19 6 3 35 1 42D Deep 20 20 1 15 4 46A Deep 19 15 0 40 2 2A Shallow 3 2 6 23 0 37C Deep 19 9 0 13 0 25C Deep 14 50 2 25 2 24D Deep 22 24 0 32 0 20A Deep 28 19 1 9 0 16B Shallow 17 16 4 11 3 42B Deep 17 12 0 14 3 10C Deep 18 17 0 14 0 13C Deep 15 26 3 18 0 33A Shallow 18 27 1 5 7

Appendix 9. Biological data collected during survey of Seibert Lake, Alberta in 2006. Abbreviations: M = male, F = female, U = unidentified, YLPR = yellow perch, LKWH = lake whitefish, WALL = walleye, NRPK = northern pike, WHSC = white sucker, SPSH = spottail shiners.

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 1 WALL 124 18 U Immature 0 2 WALL 135 19 M Immature 0 3 YLPR 106 12 F Immature 4 YLPR 97 11 M Mature 5 YLPR 95 11 M Mature 6 YLPR 97 12 M Mature 7 YLPR 99 12 M Immature 8 YLPR 103 12 M Immature 9 YLPR 122 20 F Immature 10 YLPR 109 14 F Immature 11 YLPR 105 14 M Mature 12 YLPR 101 12 M Mature 13 LKWH 115 16 M Immature 14 YLPR 145 34 F Mature 15 YLPR 159 49 F Mature 16 YLPR 166 55 F Mature 17 YLPR 150 39 F Mature 18 YLPR 147 38 F Mature 19 YLPR 140 34 M Mature 20 YLPR 147 39 F Mature 21 YLPR 141 35 M Mature 22 YLPR 144 40 F Mature 23 YLPR 144 37 M Mature 24 YLPR 142 35 M Mature 25 YLPR 163 51 F Mature 26 YLPR 150 39 F Mature 27 YLPR 135 28 M Mature 28 YLPR 160 48 M Mature 29 WALL 365 550 F Immature 3 30 WALL 242 139 M Immature 2 31 YLPR 156 46 F Mature 32 LKWH 217 140 M Immature 33 LKWH 297 347 F Immature 34 LKWH 384 809 F Mature 35 LKWH 417 1025 F Mature 36 LKWH 205 104 F Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 37 LKWH 212 118 F Immature 38 LKWH 222 142 M Immature 39 LKWH 218 138 M Immature 40 WALL 455 1154 F Mature 9 41 WALL 480 1377 F Mature 11 42 LKWH 438 1178 F Mature 43 WALL 436 1022 M Mature 9 44 WALL 402 734 M Mature 5 45 WALL 422 889 M Mature 7 46 WALL 485 1330 F Mature 9 47 WALL 495 1524 F Mature 7 48 LKWH 356 551 F Mature 50 LKWH 426 1030 M Mature 51 LKWH 425 1191 F Mature 52 LKWH 432 1246 F Mature 53 LKWH 429 1078 M Mature 54 LKWH 432 1240 F Mature 55 SPSH 91 10 56 LKWH 411 1109 F Mature 57 NRPK 441 693 M Mature 3 58 NRPK 959 7350 F Mature 10 59 LKWH 402 974 M Mature 60 WALL 447 1067 M Mature 7 61 LKWH 434 1231 F Mature 62 LKWH 429 1044 M Mature 63 LKWH 429 1181 M Mature 64 WALL 483 1338 F Mature 9 65 LKWH 402 919 M Mature 66 LKWH 403 905 M Mature 67 LKWH 450 1397 M Mature 68 LKWH 429 1063 M Mature 69 LKWH 425 1173 M Mature 70 WALL 120 16 F Immature 0 71 WALL 130 22 F Immature 0 72 WALL 124 19 F Immature 0 73 WALL 130 20 F Immature 0 74 WALL 129 18 F Immature 0 75 WALL 125 17 F Immature 0 76 WALL 127 19 F Immature 0 77 WALL 109 14 U Immature 0 78 WALL 124 17 F Immature 0

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 79 WALL 130 18 F Immature 0 80 WALL 118 18 F Immature 0 81 YLPR 98 10 M Mature 82 YLPR 117 17 F Mature 83 YLPR 99 11 M Mature 84 YLPR 108 14 M Mature 85 YLPR 100 10 F Immature 86 YLPR 94 9 M Mature 87 YLPR 104 12 M Mature 88 YLPR 113 16 F Immature 89 YLPR 112 16 M Mature 90 LKWH 117 19 F Immature 91 LKWH 110 15 M Immature 92 LKWH 123 19 F Immature 93 LKWH 105 13 U Immature 94 LKWH 116 19 U Immature 95 LKWH U Immature 96 LKWH 122 19 M Immature 97 WALL 518 1681 F Mature 9 98 WALL 145 29 M Immature 0 99 YLPR 145 32 M Mature 100 YLPR 187 76 F Mature 101 YLPR 188 72 F Mature 102 YLPR 160 46 M Mature 103 LKWH 205 107 M Immature 104 WALL 307 319 M Immature 2 105 NRPK 890 5250 F Mature 8 106 LKWH 204 106 M Immature 107 LKWH 221 140 M Immature 108 LKWH 216 122 F Immature 109 LKWH 212 114 M Immature 110 LKWH 212 113 M Immature 111 LKWH 214 114 F Immature 112 LKWH 195 90 M Immature 113 LKWH 223 139 F Immature 114 WALL 401 757 F Immature 5 115 LKWH 430 1123 F Mature 116 LKWH 426 1188 M Mature 117 LKWH 210 107 M Immature 118 WALL 450 1177 F Mature 7 119 NRPK 605 1687 M Mature 5

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 120 WALL 476 1220 F Mature 8 121 NRPK 806 3950 F Mature 7 122 NRPK 601 1529 M Mature 5 123 LKWH 374 650 F Mature 124 LKWH 417 996 M Mature 125 LKWH 425 1062 F Mature 126 LKWH 442 1293 M Mature 127 LKWH 434 1259 M Mature 128 WHSC 444 1432 M Mature 129 WALL 506 1596 F Mature 8 130 NRPK 875 5050 F Mature 8 131 NRPK 914 6250 F Mature 9 132 LKWH 465 1437 M Mature 133 LKWH 427 1166 M Mature 134 NRPK 936 6350 F Mature 9 135 WALL 130 20 F Immature 0 136 WALL 107 12 F Immature 0 137 WALL 140 29 F Immature 0 138 WALL 138 25 F Immature 0 139 WALL 135 22 M Immature 0 140 WALL 139 25 F Immature 0 141 WALL 125 21 U Immature 0 142 WALL 470 1198 F Mature 9 143 YLPR 99 11 M Mature 144 YLPR 121 21 M Mature 145 SPSH 98 12 F Mature 146 WALL 260 186 F Immature 2 147 WALL 465 1293 F Mature 8 148 YLPR 150 39 F Mature 149 YLPR 148 36 F Mature 150 LKWH 216 135 F Immature 151 LKWH 215 139 F Immature 152 LKWH 203 99 F Immature 153 LKWH 217 136 F Immature 154 WALL 243 156 F Immature 2 155 WALL 418 973 M Mature 5 156 NRPK 821 3830 F Mature 8 157 YLPR 250 178 F Mature 158 YLPR 195 88 F Mature 159 LKWH 211 115 F Immature 160 LKWH 226 146 M Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 161 LKWH 222 141 F Immature 162 LKWH 204 105 M Immature 163 LKWH 208 118 F Immature 164 LKWH 231 167 F Immature 165 LKWH 287 316 M Immature 166 LKWH 230 157 F Immature 167 LKWH 193 87 F Immature 168 WALL 435 987 M Mature 7 169 WALL 440 981 M Mature 11 170 WALL 464 1192 F Mature 7 171 WALL 460 1298 M Mature 8 172 LKWH 233 166 F Immature 173 LKWH 217 130 F Immature 174 LKWH 234 159 M Immature 175 LKWH 225 137 F Immature 176 LKWH 219 127 M Immature 177 LKWH 229 149 M Immature 178 WALL 444 1038 M Mature 7 179 LKWH 315 407 M Mature 180 LKWH 288 306 F Mature 181 LKWH 438 1166 F Mature 182 LKWH 410 1079 F Mature 183 LKWH 431 1190 M Mature 184 LKWH 435 1190 M Mature 185 LKWH 270 310 F Mature 186 WALL 456 1231 F Mature 8 187 WALL 431 1006 M Mature 9 188 NRPK 815 3877 F Mature 8 189 LKWH 439 1224 F Mature 190 LKWH 410 1011 F Mature 191 LKWH 411 1023 F Mature 192 LKWH 407 1031 F Mature 193 LKWH 432 1326 F Mature 194 LKWH 432 1176 F Mature 195 LKWH 430 1250 F Mature 196 LKWH 422 1153 M Mature 197 LKWH 436 1337 F Mature 198 NRPK 980 7300 F Mature 9 199 WALL 127 19 U Immature 0 200 WALL 117 13 F Immature 0

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 201 WALL 116 14 M Immature 0 202 YLPR 102 12 M Mature 203 YLPR 109 14 F Immature 204 YLPR 109 13 M Immature 205 YLPR 108 15 M Mature 206 YLPR 103 12 M Mature 207 YLPR 98 10 M Mature 208 YLPR 183 76 F Mature 209 YLPR 103 11 M Mature 210 YLPR 98 11 M Mature 211 YLPR 119 25 F Immature 212 YLPR 100 10 M Immature 213 SPSH 97 11 F Mature 214 YLPR 146 34 M Mature 215 YLPR 150 37 F Mature 216 YLPR 169 58 F Mature 217 YLPR 155 38 F Mature 218 YLPR 156 49 M Mature 219 YLPR 142 34 F Mature 220 YLPR 164 48 F Mature 221 WALL 226 109 F Immature 2 222 WALL 250 156 F Immature 2 223 NRPK 859 5000 F Mature 8 224 YLPR 205 99 F Mature 225 YLPR 194 87 F Mature 226 LKWH 198 97 M Immature 227 LKWH 205 98 M Immature 228 LKWH 223 152 F Immature 229 LKWH 211 108 F Immature 230 LKWH 217 132 M Immature 231 LKWH 214 115 F Immature 232 LKWH 224 131 F Immature 233 LKWH 223 142 M Immature 234 LKWH 222 144 F Mature 235 LKWH 226 138 U 236 WALL 408 759 M Mature 5 237 WALL 369 590 M Immature 4 238 WALL 455 1182 F Mature 7 239 WALL 413 894 M Mature 7 240 WALL 370 569 F Immature 4

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 241 WALL 411 796 F Immature 6 242 WALL 443 993 M Mature 7 243 LKWH 227 141 F Immature 244 WALL 460 1369 F Mature 9 245 WALL 421 993 M Mature 7 246 WALL 475 1416 F Mature 8 247 LKWH 393 906 F Mature 248 WHSC 418 1106 M Mature 249 WHSC 428 1151 F Mature 250 WALL 454 1175 F Mature 7 251 WALL 467 1138 M Mature 9 252 WALL 397 801 F Immature 5 253 WALL 415 857 M Mature 6 254 WALL 433 1017 M Mature 7 255 LKWH 385 728 F Mature 256 WHSC 415 1236 F Mature 257 LKWH 400 938 F Mature 258 LKWH 420 1176 F Mature 259 WALL 125 18 F Immature 0 260 WALL 120 17 F Immature 0 261 WALL 135 23 M Immature 0 262 WALL 119 16 M Immature 0 263 WALL 113 13 F Immature 0 264 WALL 116 15 F Immature 0 265 YLPR 113 15 M Mature 266 YLPR 108 13 F Immature 267 YLPR 106 12 F Mature 268 YLPR 102 11 M Mature 269 YLPR 105 14 M Mature 270 YLPR 103 13 M Mature 271 YLPR 119 19 M Mature 272 LKWH 124 21 U Immature 273 LKWH 116 19 M Immature 274 LKWH 122 20 F Immature 275 LKWH 112 16 F Immature 276 YLPR 127 19 F Immature 277 YLPR 145 33 M Immature 278 YLPR 143 35 F Mature 279 YLPR 146 36 F Mature 280 YLPR 160 40 F Mature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 281 YLPR 145 35 F Mature 282 YLPR 148 36 F Mature 283 YLPR 142 35 M Mature 284 LKWH 208 113 F Immature 285 LKWH 212 114 M Immature 286 LKWH 127 25 U Immature 287 WALL 240 153 F Immature 2 288 WALL 440 1022 M Mature 9 289 LKWH 215 129 F Immature 290 LKWH 220 135 F Immature 291 LKWH 212 110 F Immature 292 LKWH 189 93 M Immature 293 LKWH 213 114 F Immature 294 LKWH 291 343 F Immature 295 LKWH 211 118 U Immature 296 LKWH 210 106 F Immature 297 LKWH 218 119 M Immature 298 LKWH 226 146 M Immature 299 LKWH 208 108 F Immature 300 LKWH 208 104 F Immature 301 LKWH 205 102 F Immature 302 LKWH 214 110 F Immature 303 LKWH 214 112 F Immature 304 LKWH 200 97 M Immature 305 WALL 446 1155 F Mature 8 306 WALL 399 704 F Immature 4 307 WALL 392 721 M Mature 4 308 WALL 397 691 M Mature 4 309 LKWH 225 148 M Immature 310 LKWH 354 618 F Mature 311 LKWH 220 129 M Immature 312 LKWH 216 126 F Immature 313 LKWH 215 141 M Immature 314 WALL 422 914 M Mature 7 315 WALL 465 1193 F Mature 8 316 WALL 494 1385 F Mature 11 317 WALL 423 965 M Mature 9 318 WALL 505 1632 F Mature 8 319 WALL 418 857 M Mature 5 320 WALL 413 757 F Immature 4

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 321 LKWH 291 333 F Immature 322 LKWH 304 377 F Immature 323 LKWH 347 577 M Immature 324 LKWH 435 1433 F Mature 325 LKWH 431 1302 F Mature 326 LKWH 427 1094 M Mature 327 LKWH 394 879 F Mature 328 LKWH 400 945 M Mature 329 LKWH 357 640 M Mature 330 LKWH 438 1155 M Mature 331 WHSC 490 2034 F Mature 332 LKWH 417 1158 M Mature 333 LKWH 412 959 M Mature 334 WHSC 509 2063 F Mature 335 YLPR 110 13 M Mature 336 LKWH 121 22 U Immature 337 YLPR 144 35 F Mature 338 LKWH 435 1425 M Mature 339 LKWH 347 554 F Mature 340 NRPK 632 1797 M Mature 5 341 LKWH 212 110 F Immature 342 LKWH 425 1109 M Mature 343 LKWH 209 111 M Immature 344 LKWH 221 127 M Immature 345 LKWH 212 126 F Immature 346 LKWH 404 1019 M Mature 347 LKWH 357 64 F Mature 348 LKWH 277 279 M Immature 349 WALL 495 1446 F Mature 8 350 WALL 408 745 M Mature 5 351 NRPK 600 1560 M Mature 5 352 LKWH 223 144 F Immature 353 LKWH 263 298 F Immature 354 LKWH 353 692 M Mature 355 LKWH 412 1067 M Mature 356 LKWH 412 1028 F Mature 357 WALL 493 1460 F Mature 8 358 NRPK 541 1115 M Mature 4 359 NRPK 629 1758 F Mature 5 360 NRPK 645 2033 M Mature 5

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 361 LKWH 361 635 F Mature 362 LKWH 439 1378 F Mature 363 LKWH 409 1103 M Mature 364 LKWH 450 1306 M Mature 365 NRPK 850 3975 F Mature 8 366 LKWH 424 1150 F Mature 367 LKWH 390 893 M Mature 368 LKWH 439 1125 M Mature 369 WALL 114 14 U Immature 0 370 YLPR 97 11 M Mature 371 YLPR 99 11 M Mature 372 WALL 437 1068 F Mature 8 373 YLPR 140 34 M Mature 374 YLPR 153 40 F Mature 375 YLPR 143 34 F Mature 376 YLPR 155 43 F Mature 377 YLPR 149 39 F Mature 378 YLPR 174 64 F Mature 379 YLPR 157 44 F Mature 380 WALL 466 1236 F Mature 8 381 WALL 433 911 F Mature 7 382 WALL 390 650 F Mature 4 383 WALL 453 1181 F Mature 8 384 LKWH 218 130 F Immature 385 LKWH 217 125 M Immature 386 LKWH 222 145 M Immature 387 LKWH 239 161 F Immature 388 LKWH 207 107 F Immature 389 LKWH 232 153 M Immature 390 LKWH 225 133 F Immature 391 WALL 444 1025 F Mature 7 392 WALL 455 1205 F Mature 8 393 WALL 397 803 M Mature 7 394 LKWH 296 339 F Immature 395 WALL 467 1263 F Mature 8 396 WALL 459 1207 F Mature 8 397 WALL 445 1201 F Mature 8 398 WALL 389 670 M Mature 4 399 LKWH 303 380 M Immature 400 LKWH 304 372 F Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 401 WALL 433 915 F Immature 5 402 WALL 451 1113 F Mature 8 403 WALL 465 1171 F Mature 7 404 WALL 532 1584 F Mature 13 405 WALL 466 1236 F Mature 10 406 LKWH 390 993 F Mature 407 WALL 462 1111 F Mature 13 408 LKWH 385 929 M Mature 409 LKWH 430 1280 F Mature 410 WALL 118 14 F Immature 0 411 WALL 135 25 F Immature 0 412 WALL 128 21 M Immature 0 413 WALL 132 20 F Immature 0 414 WALL 132 22 M Immature 0 415 WALL 141 26 M Immature 0 416 WALL 120 17 M Immature 0 417 WALL 125 18 M Immature 0 418 YLPR 108 15 M Mature 419 YLPR 102 13 F Immature 420 YLPR 121 22 M Mature 421 YLPR 100 12 M Mature 422 YLPR 107 14 M Mature 423 YLPR 104 13 M Mature 424 YLPR 105 13 M Mature 425 YLPR 97 10 M Mature 426 YLPR 98 11 F Immature 427 YLPR 107 12 F Immature 428 YLPR 99 11 M Mature 429 YLPR 110 13 F Immature 430 YLPR 100 12 M Mature 431 YLPR 110 15 M Mature 432 YLPR 103 13 F Immature 433 YLPR 104 12 M Mature 434 YLPR 95 10 M Mature 435 YLPR 102 11 M Mature 436 YLPR 103 11 M Mature 437 YLPR 112 13 F Immature 438 YLPR 114 16 F Immature 439 YLPR 115 17 M Mature 440 YLPR 88 8 M Mature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 441 YLPR 98 12 M Mature 442 YLPR 102 10 M Mature 443 LKWH 113 16 F Immature 444 SPSH 99 12 F Mature 445 SPSH 95 12 446 YLPR 144 31 F Mature 447 YLPR 148 39 M Mature 448 YLPR 149 35 F Mature 449 YLPR 153 39 F Mature 450 YLPR 144 36 M Mature 451 YLPR 144 35 F Mature 452 YLPR 165 51 M Mature 453 YLPR 154 39 F Mature 454 YLPR 138 31 M Mature 455 YLPR 148 38 F Mature 456 YLPR 145 37 F Mature 457 YLPR 151 41 F Mature 458 YLPR 150 39 F Mature 459 YLPR 150 39 M Mature 460 YLPR 165 51 F Mature 461 YLPR 153 42 F Mature 462 YLPR 144 32 F Mature 463 YLPR 150 43 M Mature 464 YLPR 142 34 M Mature 465 YLPR 152 43 F Mature 466 YLPR 150 39 M Mature 467 YLPR 143 37 F Mature 468 YLPR 167 55 F Mature 469 YLPR 154 39 F Mature 470 YLPR 163 46 F Mature 471 LKWH 228 158 M Immature 472 LKWH 220 120 F Immature 473 LKWH 217 131 M Immature 474 LKWH 219 141 M Immature 475 LKWH 213 125 M Immature 476 LKWH 223 137 477 LKWH 239 90 M Immature 478 LKWH 205 109 M Immature 479 LKWH 209 122 F Immature 480 LKWH 212 140 F Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 481 LKWH 220 142 F Immature 482 LKWH 212 109 F Immature 483 LKWH 298 358 F Immature 484 LKWH 196 97 F Immature 485 WALL 458 1244 F Mature 8 486 LKWH 444 1428 F Mature 487 LKWH 283 302 F Immature 488 LKWH 225 152 M Immature 489 LKWH 220 128 F Immature 490 LKWH 216 131 F Immature 491 WALL 422 969 M Mature 7 492 WALL 513 1753 F Mature 8 493 NRPK 583 1558 M Mature 4 494 LKWH 404 995 F Mature 495 LKWH 311 433 F Immature 496 LKWH 356 399 M Mature 497 LKWH 290 302 M Immature 498 WALL 478 1292 F Mature 8 499 WALL 471 1373 F Mature 10 500 NRPK 795 4050 F Mature 8 501 WALL 495 1526 F Immature 8 502 LKWH 398 1036 F Mature 503 WALL 117 16 M Immature 0 504 WALL 434 946 F Mature 6 505 WALL 123 17 F Immature 0 506 WALL 120 18 M Immature 0 507 WALL 125 22 M Immature 0 508 YLPR 105 12 M Mature 509 YLPR 107 12 F Immature 510 YLPR 113 15 F Immature 511 YLPR 120 22 M Mature 512 YLPR 90 8 F Immature 513 YLPR 98 11 M Mature 514 YLPR 121 22 M Mature 515 YLPR 100 11 M Mature 516 LKWH 124 22 F Immature 517 LKWH 123 20 F Mature 518 LKWH 115 16 F Immature 519 LKWH 123 23 F Immature 520 WALL 229 112 F Immature 2

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 521 WALL 493 1632 F Mature 9 522 YLPR 151 43 F Mature 523 YLPR 161 45 F Mature 524 YLPR 154 44 F Mature 525 YLPR 183 71 F Mature 526 YLPR 155 44 F Mature 527 YLPR 144 35 M Mature 528 YLPR 149 39 F Mature 529 YLPR 147 38 F Mature 530 YLPR 142 35 F Immature 531 YLPR 170 55 M Mature 532 YLPR 147 37 M Mature 533 YLPR 150 37 F Mature 534 YLPR 161 45 F Mature 535 YLPR 141 34 F Mature 536 YLPR 145 37 F Mature 537 WALL 515 1754 F Mature 8 538 WALL 437 979 F Immature 5 539 WALL 457 1162 F Mature 10 540 WALL 248 365 M Immature 2 541 WALL 447 992 F Mature 6 542 WALL 307 309 F Immature 2 543 YLPR 178 73 M Mature 544 LKWH 290 296 F Immature 545 LKWH 222 136 F Immature 546 LKWH 235 170 M Immature 547 LKWH 232 162 F Immature 548 LKWH 215 121 M Immature 549 LKWH 221 132 M Immature 550 LKWH 205 113 M Immature 551 LKWH 220 128 F Immature 552 LKWH 200 89 U Immature 553 WALL 283 256 F Immature 2 554 LKWH 393 767 M Mature 555 LKWH 420 1092 M Mature 556 LKWH 415 1071 F Mature 557 LKWH 290 323 F Immature 558 LKWH 213 118 F Immature 559 WALL 482 1381 F Mature 7 560 WALL 431 1125 M Mature 9

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 561 WALL 494 1151 F Mature 10 562 LKWH 284 299 F Immature 563 LKWH 422 1163 M Mature 564 LKWH 405 910 M Mature 565 LKWH 359 527 M Mature 566 LKWH 305 360 F Immature 567 LKWH 298 366 F Immature 568 WALL 495 1304 F Mature 9 569 WALL 453 1311 F Mature 11 570 LKWH 378 772 M Mature 571 LKWH 414 974 F Mature 572 LKWH 408 971 M Mature 573 LKWH 403 976 M Mature 574 WALL 476 1415 F Mature 8 575 WALL 506 1641 F Mature 9 576 WALL 570 2139 F Mature 16 577 LKWH 454 1383 F Mature 578 LKWH 430 1222 F Mature 579 LKWH 414 1062 M Mature 580 LKWH 434 1185 M Mature 581 WALL 126 23 F Immature 0 582 WALL 122 16 M Immature 0 583 WALL 120 20 F Immature 0 584 YLPR 117 19 M Mature 585 YLPR 101 12 M Mature 586 YLPR 103 11 M Mature 587 YLPR 101 11 M Mature 588 YLPR 100 12 M Mature 589 YLPR 104 12 F Immature 590 WALL 481 1258 F Mature 7 591 WALL 412 736 F Immature 5 592 WALL 257 177 M Immature 2 593 WALL 232 130 M Immature 2 594 YLPR 166 51 F Mature 595 YLPR 155 44 F Mature 596 YLPR 153 39 F Mature 597 YLPR 146 39 M Mature 598 YLPR 155 43 F Mature 599 YLPR 146 38 F Mature 600 YLPR 141 32 F Mature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 601 YLPR 140 33 F Mature 602 YLPR 176 70 F Mature 603 YLPR 155 40 F Mature 604 YLPR 135 28 M Mature 605 YLPR 159 43 F Mature 606 YLPR 152 47 F Mature 607 WALL 226 116 M Immature 2 608 WALL 228 125 M Immature 1 609 WALL 226 137 F Immature 1 610 WALL 230 132 F Immature 2 611 WALL 221 107 F Immature 1 612 WALL 230 132 F Immature 1 613 LKWH 212 115 M Immature 614 LKWH 199 99 F Immature 615 LKWH 198 95 F Immature 616 LKWH 212 128 F Immature 617 WALL 432 991 M Mature 7 618 WALL 370 573 F Immature 4 619 LKWH 386 886 F Mature 620 LKWH 231 153 F Immature 621 WALL 435 987 M Mature 8 622 WALL 405 708 F Immature 4 623 WALL 462 1302 F Mature 7 624 WALL 432 970 M Mature 9 625 LKWH 350 564 F Mature 626 WALL 493 1443 F Mature 9 627 WALL 427 976 F Mature 6 628 WALL 423 934 M Mature 9 629 WALL 475 1411 F Mature 7 630 WALL 454 1101 F Immature 7 631 WALL 452 1053 M Mature 10 632 WALL 437 923 F Mature 8 633 LKWH 420 1089 F Mature 634 WALL 490 1484 M Mature 10 635 WALL 538 1637 F Mature 15 636 LKWH 430 1158 F Mature 637 NRPK 660 1606 F Mature 5 638 WALL 135 25 M Immature 0 639 WALL 130 21 F Immature 0 640 WALL 136 19 M Immature 0

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 641 WALL 133 24 F Immature 0 642 WALL 113 13 M Immature 0 643 WALL 124 18 F Immature 0 644 YLPR 101 10 F Immature 645 YLPR 102 11 F Immature 646 YLPR 101 11 F Immature 647 YLPR 103 12 M Mature 648 YLPR 105 12 M Mature 649 YLPR 105 13 M Mature 650 YLPR 101 14 M Mature 651 YLPR 99 11 M Mature 652 SPSH 97 11 F Mature 653 SPSH 96 10 F Mature 654 SPSH 95 10 U Unknown 655 YLPR 141 33 F Mature 656 YLPR 146 38 M Mature 657 YLPR 153 36 F Mature 658 YLPR 134 35 M Mature 659 YLPR 162 48 F Mature 660 YLPR 147 39 F Mature 661 YLPR 152 41 F Mature 662 YLPR 155 38 F Mature 663 WALL 467 1166 M Mature 9 664 LKWH 227 146 F Immature 665 LKWH 226 155 F Immature 666 LKWH 198 94 F Immature 667 LKWH 203 100 M Immature 668 WALL 447 1231 M Mature 8 669 NRPK 924 6650 F Mature 9 670 LKWH 425 1182 M Mature 671 LKWH 417 1061 F Mature 672 LKWH 396 1050 M Mature 673 WALL 455 1157 M Mature 8 674 WALL 417 940 M Mature 9 675 WALL 436 1151 7 676 WALL 435 982 M Mature 7 677 NRPK 547 1198 M Mature 4 678 NRPK 646 1852 F Mature 5 679 LKWH 445 1648 M Mature 680 WALL 470 1284 F Mature 9

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 681 WALL 510 1750 F Mature 9 682 WALL 452 1125 M Mature 9 683 WALL 470 1294 M Mature 9 684 WALL 497 1406 F Mature 9 685 LKWH 440 1253 F Mature 686 LKWH 404 876 M Mature 687 LKWH 414 1029 M Mature 688 NRPK 927 6660 F Mature 8 689 YLPR 116 18 M Mature 690 YLPR 100 10 M Mature 691 YLPR 103 11 M Mature 692 YLPR 99 10 M Mature 693 SPSH 94 10 F Mature 694 SPSH 91 9 F Mature 695 SPSH 95 10 F Mature 696 WALL 155 40 M Immature 0 697 WALL 442 995 M Mature 11 698 YLPR 143 34 F Mature 699 YLPR 180 72 F Mature 700 YLPR 140 36 F Mature 701 YLPR 151 41 F Mature 702 YLPR 149 39 F Mature 703 YLPR 147 38 F Mature 704 LKWH 189 68 U Immature 705 WALL 447 1131 F Mature 8 706 WALL 461 1304 F Mature 7 707 YLPR 225 139 F Mature 708 YLPR 200 97 F Mature 709 LKWH 218 136 F Immature 710 LKWH 214 113 F Immature 711 LKWH 222 156 F Immature 712 LKWH 203 117 F Immature 713 LKWH 205 100 F Immature 714 LKWH 222 127 M Immature 715 WALL 489 1335 F Mature 7 716 WALL 460 1142 F Mature 8 717 WALL 404 825 M Mature 10 718 WALL 409 890 M Mature 6 719 LKWH 222 140 F Immature 720 LKWH 219 140 F Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 721 LKWH 214 124 M Immature 722 LKWH 295 350 F Immature 723 WALL 441 1011 M Mature 7 724 WALL 472 1269 F Mature 9 725 WALL 445 1160 F Mature 10 726 LKWH 403 959 M Mature 727 WALL 454 1154 F Mature 8 728 WALL 485 1256 F Mature 8 729 WALL 489 1435 F Mature 9 730 WALL 450 1184 M Mature 9 731 WALL 482 1433 F Mature 8 732 WALL 420 903 M Mature 7 733 LKWH 403 1434 F Mature 734 LKWH 411 995 M Mature 735 WALL 132 20 M Immature 0 736 YLPR 94 10 M Mature 737 YLPR 100 11 F Immature 738 YLPR 103 12 F Immature 739 YLPR 97 11 M Mature 740 YLPR 106 13 F Immature 741 YLPR 102 12 M Mature 742 YLPR 106 15 M Mature 743 WALL 412 888 M Mature 8 744 WALL 472 1297 F Mature 10 745 YLPR 140 340 M Mature 746 YLPR 139 31 M Mature 747 YLPR 143 35 M Mature 748 YLPR 142 35 F Mature 749 YLPR 145 34 F Mature 750 YLPR 154 43 F Mature 751 YLPR 154 42 M Mature 752 YLPR 165 48 F Mature 753 YLPR 141 35 F Mature 754 YLPR 173 61 F Mature 755 WALL 237 147 F Immature 2 756 WALL 468 1216 F Mature 8 757 LKWH 190 85 F Immature 758 LKWH 218 128 M Immature 759 LKWH 211 119 M Immature 760 LKWH 212 122 M Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 761 LKWH 218 126 F Immature 762 LKWH 193 84 F Immature 763 LKWH 207 106 F Immature 764 WALL 431 1024 M Mature 8 765 WALL 472 1249 F Mature 8 766 WALL 465 1224 F Mature 9 767 LKWH 264 257 M Mature 768 LKWH 224 137 F Immature 769 WALL 432 1009 M Mature 8 770 WALL 490 1409 F Mature 8 771 WALL 439 954 M Mature 8 772 LKWH 233 149 M Immature 773 LKWH 296 325 F Immature 774 LKWH 402 1030 F Mature 775 WALL 495 1405 F Mature 8 776 WALL 457 1095 M Mature 7 777 WALL 460 1227 F Mature 7 778 WALL 430 897 M Mature 9 779 WALL 448 1005 M Mature 8 780 WALL 496 1467 F Mature 8 781 WALL 506 1603 F Mature 9 782 LKWH 435 1195 M Mature 783 LKWH 406 1115 M Mature 784 WALL 125 18 F Immature 0 785 WALL 128 21 M Immature 0 786 WALL 478 1301 F Mature 7 787 YLPR 100 10 M Mature 788 YLPR 99 10 M Mature 789 YLPR 101 12 M Mature 790 YLPR 97 10 M Mature 791 YLPR 150 39 F Mature 792 YLPR 105 13 F Immature 793 YLPR 107 12 M Mature 794 YLPR 102 11 F Immature 795 YLPR 102 11 M Mature 796 YLPR 101 11 F Immature 797 YLPR 104 11 M Mature 798 LKWH 113 15 F Immature 799 WALL 474 1227 F Mature 8 800 YLPR 151 38 F Mature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 801 YLPR 149 38 F Mature 802 YLPR 152 40 F Mature 803 YLPR 178 67 M Mature 804 YLPR 145 34 F Mature 805 YLPR 142 34 M Mature 806 YLPR 151 43 F Mature 807 YLPR 145 35 F Mature 808 YLPR 135 31 M Mature 809 YLPR 135 29 F Mature 810 YLPR 145 35 F Mature 811 YLPR 205 103 M Mature 812 YLPR 144 35 M Mature 813 YLPR 142 33 M Mature 814 LKWH 206 108 F Immature 815 WALL 475 1275 F Mature 8 816 YLPR 214 118 F Mature 817 LKWH 203 103 F Immature 818 LKWH 206 102 M Immature 819 LKWH 205 113 F Immature 820 LKWH 215 130 F Immature 821 LKWH 223 149 F Immature 822 LKWH 224 140 M Immature 823 LKWH 219 132 F Immature 824 NRPK 912 6150 F Mature 9 825 LKWH 424 1052 M Mature 826 LKWH 309 391 F Immature 827 LKWH 295 320 F Immature 828 WALL 490 1365 F Mature 10 829 WALL 505 1560 F Mature 9 830 WALL 415 794 M Mature 6 831 WALL 487 1313 F Mature 8 832 NRPK 648 1786 F Mature 5 833 LKWH 300 376 F Mature 834 WALL 480 1266 F Mature 10 835 WALL 473 1274 F Mature 9 836 WALL 520 1691 F Mature 10 837 WALL 485 1463 M Mature 8 838 WALL 480 1353 F Mature 15 839 WALL 507 1612 F Mature 8 840 LKWH 360 619 F Mature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 841 LKWH 375 690 M Mature 842 NRPK 881 4650 F Mature 8 843 LKWH 427 1096 M Mature 844 LKWH 430 1136 F Mature 845 LKWH 425 1020 M Mature 846 WALL 127 20 M Immature 0 847 WALL 122 17 M Immature 0 848 WALL 134 23 F Immature 0 849 YLPR 100 11 M Mature 850 YLPR 94 8 M Mature 851 YLPR 98 11 M Mature 852 YLPR 103 12 M Mature 853 YLPR 104 13 F Immature 854 YLPR 107 13 M Mature 855 YLPR 100 11 F Immature 856 YLPR 110 15 F Immature 857 YLPR 96 10 M Mature 858 YLPR 121 18 F Immature 859 YLPR 102 11 M Mature 860 YLPR 107 13 M Mature 861 YLPR 105 11 M Immature 862 YLPR 96 10 M Mature 863 YLPR 109 12 F Immature 864 YLPR 108 15 F Immature 865 YLPR 105 13 F Immature 866 YLPR 103 12 M Mature 867 YLPR 106 12 M Mature 868 SPSH 97 12 F Mature 869 SPSH 101 12 F Mature 870 NRPK 604 1683 F Mature 5 871 YLPR 143 34 F Mature 872 YLPR 140 34 F Mature 873 YLPR 170 56 F Mature 874 YLPR 143 33 F Mature 875 YLPR 175 63 F Mature 876 YLPR 143 36 F Mature 877 YLPR 148 38 F Mature 878 YLPR 142 35 F Mature 879 LKWH 212 105 F Immature 880 LKWH 210 96 F Immature

Appendix 9. Continued

Fork length Weight Age # Sample Species (mm) (g) Sex Maturity (y) 881 LKWH 436 1216 M Mature 882 WALL 418 901 M Mature 9 883 WALL 440 1066 M Mature 8 884 WALL 448 1141 M Mature 9 885 LKWH 292 370 M Immature 886 LKWH 212 123 M Immature 887 WALL 500 1521 F Mature 9 888 WALL 478 1346 F Mature 7 889 WALL 450 1191 M Mature 9 890 WALL 471 1311 F Mature 8 891 WALL 480 1208 F Mature 8 892 WALL 474 1270 M Mature 12 893 WALL 436 1031 M Mature 12 894 WALL 473 1196 F Mature 9 895 WALL 493 1384 F Mature 11 896 WALL 432 1100 M Mature 7 897 WALL 490 1509 F Mature 8 898 WALL 505 1734 F Mature 9 899 WHSC 536 2450 F Mature 900 WHSC 503 2202 M Mature 901 WHSC 500 2063 F Mature 902 WHSC 530 2570 F Mature 903 WHSC 528 3002 F Mature

73 CCONSERVATIONONSERVATION RREPORTEPORT SSERIESERIES The Alberta Conservation Association acknowledges the following partner for their generous support of this project