190913 James Knight Fish Guide CS4
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Redalyc.A Review of the Flatfish Fisheries of the South Atlantic Ocean
Revista de Biología Marina y Oceanografía ISSN: 0717-3326 [email protected] Universidad de Valparaíso Chile Díaz de Astarloa, Juan M. A review of the flatfish fisheries of the south Atlantic Ocean Revista de Biología Marina y Oceanografía, vol. 37, núm. 2, diciembre, 2002, pp. 113-125 Universidad de Valparaíso Viña del Mar, Chile Available in: http://www.redalyc.org/articulo.oa?id=47937201 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Revista de Biología Marina y Oceanografía 37 (2): 113 - 125, diciembre de 2002 A review of the flatfish fisheries of the south Atlantic Ocean Una revisión de las pesquerías de lenguados del Océano Atlántico sur Juan M. Díaz de Astarloa1 2 1CONICET, Departamento de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, 7600 Mar del Plata, Argentina. [email protected] 2 Current address: Laboratory of Marine Stock-enhancement Biology, Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, kitashirakawa-oiwakecho, sakyo-ku, Kyoto, 606-8502 Japan. [email protected] Resumen.- Se describen las pesquerías de lenguados del Abstract.- The flatfish fisheries of the South Atlantic Atlántico sur sobre la base de series de valores temporales de Ocean are described from time series of landings between desembarcos pesqueros entre los años 1950 y 1998, e 1950 and 1998 and available information on species life información disponible sobre características biológicas, flotas, history, fleets and gear characteristics, and economical artes de pesca e importancia económica de las especies importance of commercial species. -
Pleuronectidae, Poecilopsettidae, Achiridae, Cynoglossidae
1536 Glyptocephalus cynoglossus (Linnaeus, 1758) Pleuronectidae Witch flounder Range: Both sides of North Atlantic Ocean; in the western North Atlantic from Strait of Belle Isle to Cape Hatteras Habitat: Moderately deep water (mostly 45–330 m), deepest in southern part of range; found on mud, muddy sand or clay substrates Spawning: May–Oct in Gulf of Maine; Apr–Oct on Georges Bank; Feb–Jul Meristic Characters in Middle Atlantic Bight Myomeres: 58–60 Vertebrae: 11–12+45–47=56–59 Eggs: – Pelagic, spherical Early eggs similar in size Dorsal fin rays: 97–117 – Diameter: 1.2–1.6 mm to those of Gadus morhua Anal fin rays: 86–102 – Chorion: smooth and Melanogrammus aeglefinus Pectoral fin rays: 9–13 – Yolk: homogeneous Pelvic fin rays: 6/6 – Oil globules: none Caudal fin rays: 20–24 (total) – Perivitelline space: narrow Larvae: – Hatching occurs at 4–6 mm; eyes unpigmented – Body long, thin and transparent; preanus length (<33% TL) shorter than in Hippoglossoides or Hippoglossus – Head length increases from 13% SL at 6 mm to 22% SL at 42 mm – Body depth increases from 9% SL at 6 mm to 30% SL at 42 mm – Preopercle spines: 3–4 occur on posterior edge, 5–6 on lateral ridge at about 16 mm, increase to 17–19 spines – Flexion occurs at 14–20 mm; transformation occurs at 22–35 mm (sometimes delayed to larger sizes) – Sequence of fin ray formation: C, D, A – P2 – P1 – Pigment intensifies with development: 6 bands on body and fins, 3 major, 3 minor (see table below) Glyptocephalus cynoglossus Hippoglossoides platessoides Total myomeres 58–60 44–47 Preanus length <33%TL >35%TL Postanal pigment bars 3 major, 3 minor 3 with light scattering between Finfold pigment Bars extend onto finfold None Flexion size 14–20 mm 9–19 mm Ventral pigment Scattering anterior to anus Line from anus to isthmus Early Juvenile: Occurs in nursery habitats on continental slope E. -
Aspects of the Life History of Hornyhead Turbot, Pleuronichthys Verticalis, Off Southern California
Aspects of the Life History of Hornyhead Turbot, Pleuronichthys verticalis, off Southern California he hornyhead turbot T(Pleuronichthys verticalis) is a common resident flatfish on the mainland shelf from Magdalena Bay, Baja Califor- nia, Mexico to Point Reyes, California (Miller and Lea 1972). They are randomly distributed over the bottom at a density of about one fish per 130 m2 and lie partially buried in the sediment (Luckinbill 1969). Hornyhead turbot feed primarily on sedentary, tube-dwelling polychaetes (Luckinbill 1969, Allen 1982, Cross et al. 1985). They pull the tubes from the sediment, Histological section of a fish ovary. extract the polychaete, and then eject the tube (Luckinbill 1969). Hornyhead turbot are Orange County, p,p’-DDE Despite the importance of batch spawners and may averaged 362 μg/kg wet the hornyhead turbot in local spawn year round (Goldberg weight in hornyhead turbot monitoring programs, its life 1982). Their planktonic eggs liver and 5 μg/kg dry weight in history has received little are 1.00-1.16 mm diameter the sediments (CSDOC 1992). attention. The long-term goal (Sumida et al. 1979). Their In the same year in Santa of our work is to determine larvae occur in the nearshore Monica Bay, p,p’-DDE aver- how a relatively low trophic plankton throughout the year aged 7.8 mg/kg wet weight in level fish like the hornyhead (Gruber et al. 1982, Barnett et liver and 81 μg/kg dry weight turbot accumulates tissue al. 1984, Moser et al. 1993). in the sediments (City of Los levels of chlorinated hydrocar- Several agencies in South- Angeles 1992). -
Age, Growth and Population Dynamics of Lemon Sole Microstomus Kitt(Walbaum 1792)
Age, growth and population dynamics of lemon sole Microstomus kitt (Walbaum 1792) sampled off the west coast of Ireland By Joan F. Hannan Masters Thesis in Fish Biology Galway-Mayo Institute of Technology Supervisors of Research Dr. Pauline King and Dr. David McGrath Submitted to the Higher Education and Training Awards Council July 2002 Age, growth and population dynamics of lemon sole Microstomus kitt (Walbaum 1792) sampled off the west coast of Ireland Joan F. Hannan ABSTRACT The age, growth, maturity and population dynamics o f lemon sole (Microstomus kitt), captured off the west coast o f Ireland (ICES division Vllb), were determined for the period November 2000 to February 2002. The maximum age recorded was 14 years. Males o f the population were dominated by 4 year olds, while females were dominated by 5 year olds. Females dominated the sex ratio in the overall sample, each month sampled, at each age and from 22cm in total length onwards (when N > 20). Possible reasons for the dominance o f females in the sex ratio are discussed. Three models were used to obtain the parameters o f the von Bertalanfly growth equation. These were the Ford-Walford plot (Beverton and Holt 1957), the Gulland and Holt plot (1959) and the Rafail (1973) method. Results o f the fitted von Bertalanffy growth curves showed that female lemon sole o ff the west coast o f Ireland grew faster than males and attained a greater size. Male and female lemon sole mature from 2 years o f age onwards. There is evidence in the population o f a smaller asymptotic length (L«, = 34.47cm), faster growth rate (K = 0.1955) and younger age at first maturity, all o f which are indicative o f a decrease in population size, when present results are compared to data collected in the same area 22 years earlier. -
Food Choice of Different Size Classes of Flounder (Platichthys Flesus ) In
Food choice of different size classes of flounder ( Platichthys flesus ) in the Baltic Sea Jennie Ljungberg Degree project in biology, Master of science (2 years), 2014 Examensarbete i biologi 30 hp till masterexamen, 2014 Biology Education Centre Supervisor: Bertil Widbom Table of Contents ABSTRACT ............................................................................................................................................ 3 INTRODUCTION ................................................................................................................................... 4 Flounders in the Baltic Sea .................................................................................................................. 5 The diet of flounders ........................................................................................................................... 6 Blue mussel (Mytilus edulis) ............................................................................................................... 7 Blue mussels in the Baltic Sea............................................................................................................. 8 The nutritive value of blue mussels ..................................................................................................... 9 The condition of flounders in the Baltic Sea ....................................................................................... 9 Aims ................................................................................................................................................. -
Greenland Turbot Assessment
6HFWLRQ STOCK ASSESSMENT OF GREENLAND TURBOT James N. Ianelli, Thomas K. Wilderbuer, and Terrance M. Sample 6XPPDU\ Changes to this year’s assessment in the past year include: 1. new summary estimates of retained and discarded Greenland turbot by different target fisheries, 2. update the estimated catch levels by gear type in recent years, and 3. new length frequency and biomass data from the 1998 NMFS eastern Bering Sea shelf survey. Conditions do not appear to have changed substantively over the past several years. For example, the abundance of Greenland turbot from the eastern Bering Sea (EBS) shelf-trawl survey has found only spotty quantities with very few small fish that were common in the late 1970s and early 1980s. The majority of the catch has shifted to longline gear in recent years. The assessment model analysis was similar to last year but with a slightly higher estimated overall abundance. We attribute this to a slightly improved fit to the longline survey data trend. The target stock size (B40%, female spawning biomass) is estimated at about 139,000 tons while the projected 1999 spawning biomass is about 110,000 tons. The adjusted yield projection from F40% computations is estimated at 20,000 tons for 1999, and increase of 5,000 from last year’s ABC. Given the continued downward abundance trend and no sign of recruitment to the EBS shelf, extra caution is warranted. We therefore recommend that the ABC be set to 15,000 tons (same value as last year). As additional survey information become available and signs of recruitment (perhaps from areas other than the shelf) are apparent, then we believe that the full ABC or increases in harvest may be appropriate for this species. -
CHAPTER 3 FISH and CRUSTACEANS, MOLLUSCS and OTHER AQUATIC INVERTEBRATES I 3-L Note
)&f1y3X CHAPTER 3 FISH AND CRUSTACEANS, MOLLUSCS AND OTHER AQUATIC INVERTEBRATES I 3-l Note 1. This chapter does not cover: (a) Marine mammals (heading 0106) or meat thereof (heading 0208 or 0210); (b) Fish (including livers and roes thereof) or crustaceans, molluscs or other aquatic invertebrates, dead and unfit or unsuitable for human consumption by reason of either their species or their condition (chapter 5); flours, meals or pellets of fish or of crustaceans, molluscs or other aquatic invertebrates, unfit for human consumption (heading 2301); or (c) Caviar or caviar substitutes prepared from fish eggs (heading 1604). 2. In this chapter the term "pellets" means products which have been agglomerated either directly by compression or by the addition of a small quantity of binder. Additional U.S. Note 1. Certain fish, crustaceans, molluscs and other aquatic invertebrates are provided for in chapter 98. )&f2y3X I 3-2 0301 Live fish: 0301.10.00 00 Ornamental fish............................... X....... Free Free Other live fish: 0301.91.00 00 Trout (Salmo trutta, Salmo gairdneri, Salmo clarki, Salmo aguabonita, Salmo gilae)................................... X....... Free Free 0301.92.00 00 Eels (Anguilla spp.)..................... kg...... Free Free 0301.93.00 00 Carp..................................... X....... Free Free 0301.99.00 00 Other.................................... X....... Free Free 0302 Fish, fresh or chilled, excluding fish fillets and other fish meat of heading 0304: Salmonidae, excluding livers and roes: 0302.11.00 Trout (Salmo trutta, Salmo gairdneri, Salmo clarki, Salmo aguabonita, Salmo gilae)................................... ........ Free 2.2¢/kg 10 Rainbow trout (Salmo gairnderi), farmed.............................. kg 90 Other............................... kg 0302.12.00 Pacific salmon (Oncorhynchus spp.), Atlantic salmon (Salmo salar) and Danube salmon (Hucho hucho)............. -
Plaice (Pleuronectes Platessä) Contents
1-group plaice (Pleuronectes platessä) Contents Acknowledgements:............................................................................................................ 1 Abstract:.............................................................................................................................3 Chapter 1: General introduction.....................................................................................................4 Chapter 2: Fin-ray count variation in 0-group flatfish: plaice (Pleuronectesplatessa (L.)) and flounder (Platichthys flesus ( L.)) on the west coast of Ireland..............................15 Chapter 3: Variation in the fin ray counts of 0-group turbot (Psetta maxima L.) and brill (Scophthalmus rhombus L.) on the west coast of Ireland: 2006-2009.......................... 28 Chapter 4: Annual and spatial variation in the abundance length and condition of turbot (.Psetta maxima L.) on nursery grounds on the west coast of Ireland: 2000-2007.........41 Chapter 5: Variability in the early life stages of juvenile plaice (.Pleuronectes platessa L.) on west of Ireland nursery grounds; 2000 - 2007........................................................64 Chapter 6: The early life history of turbot (Psetta maxima L.) on nursery grounds along the west coast of Ireland: 2007 -2009, as described by otolith microstructure.............85 Chapter 7: The feeding ecology of 0-group turbot (Psetta maxima L.) and brill (Scophthalmus rhombus L.) on Irish west coast nursery grounds.................................96 Chapter -
Technical Reports
Technical Report No. 30 A Bibliography on Atlantic Halibut (Hippoglossus hippoglossus) and.Pacific Halibut (Hippoglossus stenolepis) Culture, with Abstracts compiled by Robert R. Stickney and Damon Seawright School of Fisheries, University of Washington 25 FOREWORD This bibliography includes publications on the culture of Atlantic halibut (Hippoglossus hippoglossus) and Pacific halibut (H. stenolepis). The literature was surveyed through early 1993, with concentration on the past decade when efforts to culture halibut began in earnest. For publications with abstracts, the abstracts (sometimes slightly modified to maintain continuity of style) are reproduced here. In the case of some of the publications where there were no abstracts, a brief summary is provided. 26 A Bibliography on Atlantic Halibut (Hippoglossus hippoglossus) and Pacific Halibut (Hippoglossus stenolepis) Culture,with Abstracts compiled by Robert R. Stickney and Damon Seawright School of Fisheries, University of Washington Andreasen, T. Y., T. Haug, and E. Ringo. 1989. Food, condition, and the lipid and protein contents of young Atlantic halibut (Hippoglossus hippoglossus L.) captured in the autumn in north Norway. Int. Council Explor. Sea. C.M. 19891F:3. 17 p. The diet of young (2 - 4 years), immature Atlantic halibut (Hippoglossus hippoglossus ) from nursery areas in north Norway was dominated by O-group gadoids (cod (Gadus morhua) in particular) and sand eels (Ammodytes sp.). No variation was observed among the sexes in general condition (liver and body) or in the content of total lipids or proteins in red myotomal muscle, anal fin base and liver. In white myotomal muscle, however, significant intersexual heterogeneity was observed in lipid and protein contents. The muscle tissues showed a high content of polar lipids, reflecting the relatively low total lipid content, whereas the fin base notch and liver were totally dominated by the triglycerides of the neutral fraction. -
Estimation of Age Profiles of Southern Bluefin Tuna
ESTIMATION OF AGE PROFILES OF SOUTHERN BLUEFIN TUNA Richard Morton* Mark Bravington* *CSIRO Maths and Information Science CCSBT-ESC/0309/32 Estimation of age profiles of Southern Bluefin Tuna Table of Contents ABSTRACT ..................................................................................................................1 1 Introduction ...........................................................................................................1 2 A likelihood framework for length and age-at-length data.....................................2 2.1 Estimating proportions-at-age ........................................................................4 2.1.1 Age-length key......................................................................................4 2.1.2 Iterated age-length key .........................................................................5 2.1.3 Parametric estimator: known growth.....................................................5 2.1.4 Parametric estimator: unknown growth.................................................6 2.2 Example: application to Greenland turbot data ..............................................6 3 Application to sampling design for sbt...................................................................7 3.1 Results by method .........................................................................................8 3.2 Results by fishery...........................................................................................9 3.2.2 Effect of varying the subsampling pattern...........................................10 -
Fish Bulletin 161. California Marine Fish Landings for 1972 and Designated Common Names of Certain Marine Organisms of California
UC San Diego Fish Bulletin Title Fish Bulletin 161. California Marine Fish Landings For 1972 and Designated Common Names of Certain Marine Organisms of California Permalink https://escholarship.org/uc/item/93g734v0 Authors Pinkas, Leo Gates, Doyle E Frey, Herbert W Publication Date 1974 eScholarship.org Powered by the California Digital Library University of California STATE OF CALIFORNIA THE RESOURCES AGENCY OF CALIFORNIA DEPARTMENT OF FISH AND GAME FISH BULLETIN 161 California Marine Fish Landings For 1972 and Designated Common Names of Certain Marine Organisms of California By Leo Pinkas Marine Resources Region and By Doyle E. Gates and Herbert W. Frey > Marine Resources Region 1974 1 Figure 1. Geographical areas used to summarize California Fisheries statistics. 2 3 1. CALIFORNIA MARINE FISH LANDINGS FOR 1972 LEO PINKAS Marine Resources Region 1.1. INTRODUCTION The protection, propagation, and wise utilization of California's living marine resources (established as common property by statute, Section 1600, Fish and Game Code) is dependent upon the welding of biological, environment- al, economic, and sociological factors. Fundamental to each of these factors, as well as the entire management pro- cess, are harvest records. The California Department of Fish and Game began gathering commercial fisheries land- ing data in 1916. Commercial fish catches were first published in 1929 for the years 1926 and 1927. This report, the 32nd in the landing series, is for the calendar year 1972. It summarizes commercial fishing activities in marine as well as fresh waters and includes the catches of the sportfishing partyboat fleet. Preliminary landing data are published annually in the circular series which also enumerates certain fishery products produced from the catch. -
Recycled Fish Sculpture (.PDF)
Recycled Fish Sculpture Name:__________ Fish: are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. At 32,000 species, fish exhibit greater species diversity than any other group of vertebrates. Sculpture: is three-dimensional artwork created by shaping or combining hard materials—typically stone such as marble—or metal, glass, or wood. Softer ("plastic") materials can also be used, such as clay, textiles, plastics, polymers and softer metals. They may be assembled such as by welding or gluing or by firing, molded or cast. Researched Photo Source: Alaskan Rainbow STEP ONE: CHOOSE one fish from the attached Fish Names list. Trout STEP TWO: RESEARCH on-line and complete the attached K/U Fish Research Sheet. STEP THREE: DRAW 3 conceptual sketches with colour pencil crayons of possible visual images that represent your researched fish. STEP FOUR: Once your fish designs are approved by the teacher, DRAW a representational outline of your fish on the 18 x24 and then add VALUE and COLOUR . CONSIDER: Individual shapes and forms for the various parts you will cut out of recycled pop aluminum cans (such as individual scales, gills, fins etc.) STEP FIVE: CUT OUT using scissors the various individual sections of your chosen fish from recycled pop aluminum cans. OVERLAY them on top of your 18 x 24 Representational Outline 18 x 24 Drawing representational drawing to judge the shape and size of each piece. STEP SIX: Once you have cut out all your shapes and forms, GLUE the various pieces together with a glue gun.