ANALYSIS OF TWO MARK-RECAPTURE METHODS TO ESTIMATE THE FALL CHINOOK SALMON - Part 80 - Winter 1994

Sep 21, 2026

Carcass survey data from the 1981 Chinook salmon spawning run into Bogus Creek were analyzed using the Schaefer and Jolly-Seber mark-recapture methods and compared with the actual run size determined at a dam near the creek mouth. Age-2 fish (grilse) were recaptured as carcasses at a significantly lower rate than older adult fish. Both methods produced close estimates of the adult run, while the grilse run was not estimated by the Jolly-Seber method due to low sample size. Further study directions are provided.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages53

Reading Time2 h 14 min

AccessFree to download

Contents

Analysis of Two Mark-Recapture Methods to Estimate the Fall Chinook Salmon (Oncorhynchus tshawytscha) Spawning Run in Bogus Creek, California

Notes

Waterfowl Killed by Lightning

California Fish and Game is published quarterly by the California Department ofFish and Game.It is a journal devoted to the conservation and understanding of fishand wildlife.If its contents are reproduced elsewhere,the authors and the CaliforniaDepartment of Fish and Game would appreciate being acknowledged. Subscriptions may be obtained at the rate of $10 per year by placing an order withthe Editor,California Department of Fish and Game,1416 Ninth Street,Sacramento.CA 95814.Checks or money orders in U.S.dollars should be made out to:CaliforniaFish and Game.Inquiries regarding paid subscriptions should be directed to theEditor.Complimentary subscriptions are granted on an exchange basis. California Department of Fish and Game employees may request complimentarysubscriptions to the journal. Please direct correspondence to: Dr.Eric R.Loft,Editor-in-ChiefCalifornia Fish and Game1416 Ninth StreetSacramento,California 95814 RLFDRNIH FSH HND GHME VOLUME 80 NUMBER1 WINTER 1994 Published Quarterly by STATE OF CALIFORNIATHE RESOURCES AGENCYDEPARTMENT OF FISH AND GAME--LDA-- STATE OF CALIFORNIA PETE WILSON, Govemor THE RESOURCES AGENCY DOUGLASP.WHEELER, Secretary for Resources FISH AND GAME COMMISSION Benjamin F.Biaggini, Presiden………………………………………………………………SanFrancisco Albert C. Taucher,Member ……………………………………………………………………………LongBeach Frank D.Boren,Member…………………………………………………………………………………Carpinteria Gus Owen, Member…………………………………………………………………………………………………DanaPoint Robert R. Treanor, Executive Director DEPARTMENT OF FISH AND GAME BOYD GIBBONS,Director John H. Sullivan, Chief Deputy Director A Petrovich Jr., Deputy Director Banky E. Curtis, Deputy Director Perry L.Herrgesell, Ph.D., Chief………………………………………………………Bay-DeltaDivision Rolf Mall, Chie………………………………………………………………………MarineResourcesDivision Tim Farley, Chief………………………………………………………………………InlandFisheriesDivision Terry M. Mansfield, Chief…………………………………………………WildlifeManagementDivision John Turner,Chief………………………………………………………………EnvironmentalServicesDivision Susan A.Cochrane, Chief……………………………………………………NaturalHeritageDivision DeWayne Johnston, Chief…………………………………………………WildlifeProtectionDivision Richard Eliott, Regional Manager ………………………………………………………………………Redding Ryan Broddrick, Regional Manager……………………………………………………RanchoCordova Brian F. Hunter, Regional Manager…………………………………………………………………Yountvlle George D. Nokes, Regional Manager………………………………………………………………Fresno Fred Worthley, Regional Manager………………………………………………………………LongBeach CALIFORNIA FISH AND GAME 1994 EDITORIAL STAFF Eric R.Loft, Editor-in-Chief………………………………………………………WildlifeManagement Jack Hanson Betsy C.Bolster, Ralph Carpenter, Arthur C. Knutson, Jr…………………………………………………………………………………………nlandFisheries Dan Yparraguirre, Douglas R Updike …………………………………………WildlifeManagement Steve Crooke, Doyle Hanan, Jerome D. Sprat …………………………MarineResources Donald E. Steven……………………………………………………………………………………………………Bay-Delta Peter T.Phillip……………………………………………………………………………EnvironmentalServices CONTENTS Analysis of Two Mark-Recapture Methods to Estimate the FallChinook Salmon(Oncorhynchus tshawytscha)Spawning Run inBogus Creek,California………… ……………LB Boydstun 1 Simulation Study of Salmon Carcass Survey by Capture-RecaptureMethod.…………… ……… …… …Philip M.W.Law14 Recent Evidence for the Formation of Annual Growth Increments inthe Otoliths of Young Pacific Sardines(Sardinops sagax)………………… ………J.Thomas Barnes and Terry J.Foreman29 An EfficientTechnique for Capturing Swimming Dee.………………………………………………Brian B.Boroski and Patrick L.McGlaughlin36 NOTES Waterfowl Killed by Lightning…………… ……… …Dale Whitmore43 # ANALYSIS OF TWO MARK-RECAPTURE METHODSTO ESTIMATE THE FALL CHINOOK SALMON(ONCORHYNCHUS TSHAWYTSCHA)SPAWNINGRUN IN BOGUS CREEK,CALIFORNIA LB BOYDSTUN California Department of Fish and GameMarine Resources Division1416 Ninth StreetSacramento,CA 95814 Carcass survey data f

FAQs

What data source was used for the analysis?

The study used carcass survey data from the 1981 Chinook salmon spawning run into Bogus Creek, collected via a tagging and recovery approach above a dam.

How did the two mark-recapture methods perform for estimating the adult run?

The Schaefer and Jolly-Seber methods produced close estimates of the adult run when compared to the actual run size determined at a dam near the creek mouth.

Why was the grilse run not estimated by the Jolly-Seber method?

The grilse run was not estimated by the Jolly-Seber method because the sample size was too low.

Sep 21, 2026

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