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Stock Assessment of Arctic Grayling in the Fish River, Seward Peninsula, Alaska 1999

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Stock Assessment of Arctic Grayling in the Fish River, Seward Peninsula, Alaska 1999 Fisherv Data Series No. 00-29 Stock Assessment of Arctic Grayling in the Fish River, Seward Peninsula, Alaska 1999 bY Alfred L. DeCicco and Michael J. Wallendorf November 2000 Alaska Department of Fish and Game Division of Sport Fish Symbols and Abbreviations The following symbols and abbreviations, and others approved for the Systkme International d’Unit6s (SI), are used in Division of Sport Fish Fishery Manuscripts, Fishery Data Series Reports, Fishery Management Reports, and Special Publications without definition. All others must be defined in the text at first mention, as well as in the titles or footnotes of tables and in figures or figure captions. Weights and measures (metric) General Mathematics, statistics, fisheries centimeter cm All commonly accepted e.g., Mr., Mrs., alternatehypothesis HA deciliter dL abbreviations. a.m., p.m., etc. base of natural e gram g All commonly accepted e.g., Dr.,Ph.D., logarithm hectare ha professional titles. R.N., etc. catch per unit effort CPUE and & kilogram kg coefficient of variation cv kilometer km at @ common test statistics F, t, X2,etc. liter L Compassdirections: confidence interval C.I. meter m east E correlation coefticient R (multiple) metric ton mt north N correlation coefficient r (simple) milliliter ml south S covariance COY 0 millimeter mm west W degree(angular or Copyright 0 temperature) Weights and measures (English) Corporatesufftxes: degreesof freedom df cubic feet per second ft% Company co. divided by + or / (in foot ft Corporation Corp. equations) equals = gallon gal Incorporated Inc. inch in Limited Ltd. expectedvalue E mile mi et alii (and other et al. fork length FL greaterthan > ounce 07. people) pound lb et cetera(and so forth) etc. greater than or equal to 2 exempli gratia (for e.g., harvestper unit effort HPUE quart qt example) < yard less than yd id est (that is) i.e., Spell out acre and ton. less than or equal to I latitude or longitude lat. or long. logarithm (natural) In monetary symbols .%6 Time and temperature logarithm (base 10) 1% (U.S.) logarithm (specify base) log,, etc. day d months (tables and Jan,...,Dec mideye-to-fork MEF degreesCelsius “C figures): first three degreesFahrenheit “F letters minute (angular) hour (spell out for 24-hour clock) h number (before a # (e.g., #lo) multiplied by X minute min number) not significant NS second s pounds (after a number) # (e.g., lO#) null hypothesis Ho Spell out year, month, and week. registeredtrademark @ percent % trademark TM probability P Physics and chemistry United States U.S. probability of a type I a error (rejection of the all atomic symbols (adjective) United Statesof null hypothesis when alternating current AC USA America (noun) me) ampere A U.S. state and District use two-letter probability of a type II P calorie cal of Columbia abbreviations error (acceptanceof direct current DC abbreviations (e.g., AK, DC) the null hypothesis hertz HZ when false) second(angular) ,, horsepower hp standarddeviation SD hydrogen ion activity PH standarderror SE parts per million mm standardlength SL parts per thousand PPt, %0 volts V total length TL variance watts W Var FISHERY DATA SERIES NO. 00-29 FISH RIVER ARCTIC GRAYLING STOCK ASSESSMENT, SEWARD PENINSULA, ALASKA 1999 Alfred L. DeCicco and Michael J. Wallendorf Division of Sport Fish, Fairbanks Alaska Department of Fish and Game Division of Sport Fish, Research and Technical Services 333 Raspberry Road, Anchorage, Alaska, 99518-1599 November 2000 Development and publication of this manuscript were partially financed by the Federal Aid in Snort Fish Restoration Act (16 U.S.C. 777-777K) under Project F-10-14, Job No. R-3-2(e). The Fishery Data Series was establishedin 1987 for the publication of technically-orientedresults for a single project or group of closely related projects. Fishery Data Seriesreports are intendedfor fishery and other technical professionals. Fishery Data Series reports are available through the Alaska State Library and on the Internet: httn:Nwww.sf.adfn.state.ak.us/statewide/divreDorts/htmYintersear This publication has undergoneeditorial and peer review. Alfred L. DeCicco and Michael .I. Wallendorf Alaska Deparhent of Fish and Game, Division of Sport Fish, Region III, 1300 College Road, Fairbanks, AK 99701-1599,USA This document should be cited as: DeCicco, A. L. and M. J. Wallendoq? 2000. Stock assessment of Arctic grayling in the Fish River, Seward Peninsula, Alaska 1999. Alaska Department of Fish and Game, Fishery Data Series No. 00-29, Anchorage. The Alaska Departmentof Fish and Game administersall programsand activities free from discrimination on the bases of race, color, national origin, age, sex, religion, marital status, pregnancy,parenthood, or disability. The departmentadministers all programs and activities in compliance with Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, Title II of the Americans with Disabilities Act of 1990, the Age Discrimination Act of 1975,and Title IX of the EducationAmendments of 1972. If you believe you have been discriminated against in any program, activity, or facility, or if you desire further information please write to ADF&G, P.O. Box 25526, Juneau,AK 99802-5526;U.S. Fish and Wildlife Service, 4040 N. Fairfield Drive, Suite 300, Arlington, VA 22203 or O.E.O., U.S. Department of the Interior, Washington DC 20240. For informationon alternativeformats for this and other departmentpublications, please contact the department ADA Coordinatorat (voice) 907-465-4120,(TDD) 907-465-3646,or (FAX) 907-465-2440. TABLE OF CONTENTS Page LIST OF TABLES .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .................... .. .. .. .. ii LIST OF FIGURES ,...........................................................,.........................................................................................ii LIST OF APPENDICES. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .......................ii ABSTRACT . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..........................................1 INTRODUCTION .. .. .. .. .. ..*..........................................................................................................................................1 METHODS ....................................................................................................................................................................5 Design............................................................................................................................................................................ 5 Sampling Gear and Techniques..................................................................................................................................... 5 Fish River PopulationAbundance ................................................................................................................................. 5 Age Composition........................................................................................................................................................... 8 Length Composition ......................................................................................................................................................9 Mean Length-at-Age...................................................................................................................................................... 9 EldoradoRiver Age Validation .....................................................................................................................................9 Nome River Arctic Grayling Restoration...................................................................................................................... 9 RESULTS ....................................................................................................................................................................12 Fish River PopulationAbundance ............................................................................................................................... 12 Age and Length Compositions.................................................................................................................................... 16 Mean Length-At-Age.................................................................................................................................................. .16 Eldorado River Age Validation ...................................................................................................................................16 Nome River Arctic Grayling Restoration.................................................................................................................... 16 DISCUSSION.. ............................................................................................................................................................22 ACKNOWLEDGMENTS .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ........ .. .. .. .. .. 24 LITERATURE CITED . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .
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