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Genetic Stock Identification Of Mcdonald Lake Sockeye Salmon In Selected Southeast Alaska Fisheries 2007 2009
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Book Synopsis Genetic Stock Identification of McDonald Lake Sockeye Salmon in Selected Southeast Alaska Fisheries, 2007-2009 by : Sara Ellen Gilk
Download or read book Genetic Stock Identification of McDonald Lake Sockeye Salmon in Selected Southeast Alaska Fisheries, 2007-2009 written by Sara Ellen Gilk and published by . This book was released on 2013 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distribution and Run Timing of Stocked McDonald Lake Sockeye Salmon, 2011-2014 by : Malika T. Brunette
Download or read book Distribution and Run Timing of Stocked McDonald Lake Sockeye Salmon, 2011-2014 written by Malika T. Brunette and published by . This book was released on 2015 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to a persistent decline in escapement, the McDonald Lake sockeye salmon run was classified a stock of management concern in 2009, and an action plan was developed to rebuild the stock. Measures to reduce commercial harvest and improve stock assessment were established, and a new program to evaluate information from a recent stocking program was developed. Southern Southeast Regional Aquaculture Association collected eggs from McDonald Lake (2007-2009), thermal marked and reared the fry at Burnett Inlet Hatchery then released them as full-term smolt in McDonald Lake (2009-2011). To obtain potentially improved information on the timing and distribution of McDonald Lake sockeye salmon in commercial fisheries affected by the action plan, we analyzed otoliths from sockeye salmon harvested in southern Southeast Alaska purse seine and drift gillnet fisheries (2011-2014). Although few thermal marked McDonald Lake sockeye salmon were recovered in most fisheries, peak harvests occurred in the District 106 drift gillnet and District 101-outside purse seine fisheries during and immediately after the weeks of action plan fishery closures, which corroborated results from a recent genetic stock identification analysis and previous tagging studies. Migratory timing of thermal marked fish indicated shifting the action plan later by one statistical week could improve its efficacy. Otoliths from the McDonald Lake escapement were also analyzed (2011-2014). Annual contributions of stocked fish ranged from 0.5% (2014) to 19% (2012) of the escapement. Estimated smolt-to-adult survival was highest for the 2007 brood year (7.5%) and very poor for the 2008 brood year (
Book Synopsis Operational Plan by : Malika T. Brunette
Download or read book Operational Plan written by Malika T. Brunette and published by . This book was released on 2013 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-year project will provide current, area-specifc migration and run timing information for stocked McDonald Lake fish to supplement recent genetic stock identification studies and help determine if fishery closures outlined in the McDonald Lake action plan (Bergmann et al. 2009) are effective at reducing harvest on this stock as intended.
Book Synopsis Operational Plan: McDonald Lake Sockeye Salmon Stock Assessment, 2021-2023 by : Andrew W. Piston
Download or read book Operational Plan: McDonald Lake Sockeye Salmon Stock Assessment, 2021-2023 written by Andrew W. Piston and published by . This book was released on 2021 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this project is to provide an estimate of the sockeye salmon escapement at McDonald Lake by conducting foot surveys on the spawning grounds at Hatchery Creek. We will also estimate the adult age composition of the escapement. Using results from a Pacific Salmon Treaty genetic stock identification project, we will estimate the contribution of McDonald Lake sockeye salmon to southern Southeast Alaska commercial net fisheries. This project also includes a fall hydroacoustic survey to estimate rearing juvenile sockeye salmon abundance.
Book Synopsis Genetic Stock Composition of Chum Salmon Harvested in Commercial Salmon Fisheries of the South Alaska Peninsula, 2022-2026 by : M. Birch Foster
Download or read book Genetic Stock Composition of Chum Salmon Harvested in Commercial Salmon Fisheries of the South Alaska Peninsula, 2022-2026 written by M. Birch Foster and published by . This book was released on 2022 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goal of this study is to use mixed stock analysis to estimate the stock composition of chum salmon Oncorhynchus keta harvested in South Alaska Peninsula Management Area (southern portion of Area M) commercial salmon fisheries during the 2022 to 2026 seasons. Relatively large harvests of chum salmon in South Alaska Peninsula fisheries in recent years corresponding with small returns of chum salmon to Western Alaska rivers has raised concerns among some stakeholders about the stock-specific harvests in South Alaska Peninsula fisheries. Salmon tagging studies published in 1926, 1964, and 1991 and subsequent genetic stock identification projects conducted in 1993-1996 and 2007-2009 demonstrated significant numbers of non-local chum salmon in the June and early July commercial fisheries of the South Alaska Peninsula. Presently, some stakeholders believe that relative abundances among stocks in the fishery have changed since stock-specific chum harvests were last estimated in South Alaska Peninsula harvests as part of the Western Alaska Salmon Stock Identification Program (WASSIP) in 2007-2009. An updated study that accurately and precisely estimates stock-specific harvests would help resolve these concerns and provide valuable management information regarding the gear- and temporal-specific harvests of chum salmon in select South Peninsula fisheries. This operational plan provides the Alaska Department of Fish and Game (ADF&G) with a sampling and genetic analysis plan to achieve that overall goal.
Book Synopsis Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Southeastern District Mainland, Alaska Peninsula Management Area, 2010-2012 by : Tyler H. Dann
Download or read book Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Southeastern District Mainland, Alaska Peninsula Management Area, 2010-2012 written by Tyler H. Dann and published by . This book was released on 2012 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Southeastern District Mainland (SEDM) commercial salmon fishery occurs in the Alaska Peninsula Management Area, Westward Region, is regulated based upon a board-approved management plan, and has allocative constraints between June 1 and July 25 based upon the abundance of Chignik River sockeye salmon. Significant controversy has persisted between SEDM and Chignik Management Area fishermen concerning the estimate of Chignik-bound sockeye salmon harvested in the fishery. Western Alaska Salmon Stock Identification Program used mixed stock analysis (MSA) to determine stock of origin of sockeye (and chum salmon) in commercial and subsistence fisheries throughout Western Alaska from 2006 to 2009. As a result of low returns to the Chignik River during these years, the SEDM fishery was often closed and few samples were collected for analysis. This study was designed to fill in those holes and estimate stock proportions and stock-specific harvests of sockeye salmon sampled from the SEDM fishery.
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2009 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2009 written by Andrew W. Barclay and published by . This book was released on 2010 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on mixed-stock analysis based on genetic data which was used to estimate the stock compositions of sockeye salmon (Oncorhynchus nerka) harvested in commercial fisheries in upper Cook Inlet, Alaska.
Book Synopsis Genetic Stock Identification of Southeast Alaska Chinook Salmon Fishery Catches by : Penelope Ann Crane
Download or read book Genetic Stock Identification of Southeast Alaska Chinook Salmon Fishery Catches written by Penelope Ann Crane and published by . This book was released on 2000 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study objective was to estimate the relative contribution of genetic groups of chinook salmon sampled from the summer 1998 salmon troll fishery in Southeast Alaska.
Book Synopsis Genetic Mixed Stock Analysis of Sockeye Salmon Harvests in Selected Northern Chatham Strait Commercial Fisheries, Southeast Alaska, 2012-2014 by : Sara Ellen Gilk
Download or read book Genetic Mixed Stock Analysis of Sockeye Salmon Harvests in Selected Northern Chatham Strait Commercial Fisheries, Southeast Alaska, 2012-2014 written by Sara Ellen Gilk and published by . This book was released on 2015 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study provides precise stock-specific estimates of harvest compositions of sockeye salmon (Oncorhynchus nerka) caught in commercial purse seine fisheries in northern Chatham Straight, Southeast Alaska.
Book Synopsis Sampling Instructions for Genetic Stock Identification of Southeast Alaska Chinook Salmon by : Alaska. Division of Commercial Fisheries. Gene Conservation Laboratory
Download or read book Sampling Instructions for Genetic Stock Identification of Southeast Alaska Chinook Salmon written by Alaska. Division of Commercial Fisheries. Gene Conservation Laboratory and published by . This book was released on 200? with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Harvest and Harvest Rates of Chum Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 by : Andrew Roy Munro
Download or read book Harvest and Harvest Rates of Chum Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program (WASSIP), 2007-2009 written by Andrew Roy Munro and published by . This book was released on 2012 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainty about the magnitude, frequency, location, and timing of stock-specific sockeye and chum salmon harvest in western Alaska fisheries was the impetus for the Western Alaska Salmon Stock Identification Program (WASSIP). The program was designed to use genetic data in mixed stock analysis (MSA) of fisheries samples to more clearly describe harvest patterns of sockeye and chum salmon stocks in western Alaska fisheries. This report reviews the history of WASSIP, summarizes the memorandum of understanding as the guiding document for the program, and reviews participation and contributions of the Advisory Panel and Technical Committee to the program. Brief descriptions of WASSIP sockeye fisheries are provided and previous sockeye tagging and stock identification studies are reviewed. We describe the methodology used to estimate stock-specific harvests and harvest rates for sockeye salmon, report these estimates, and provide guidance on interpretation of results. These results provide the most comprehensive examination of stock-specific harvest and harvest rates across western Alaska sockeye salmon fisheries ever attempted.
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2010 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2010 written by Andrew W. Barclay and published by . This book was released on 2013 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on mixed-stock analysis based on genetic data which was used to estimate the stock compositions of sockeye salmon (Oncorhynchus nerka) harvested in commercial fisheries in upper Cook Inlet, Alaska.
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2011 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2011 written by Andrew W. Barclay and published by . This book was released on 2014 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on mixed-stock analysis based on genetic data which was used to estimate the stock compositions of sockeye salmon (Oncorhynchus nerka) harvested in commercial fisheries in upper Cook Inlet, Alaska.
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2020 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2020 written by Andrew W. Barclay and published by . This book was released on 2021 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report includes stock composition and stock-specific harvest estimates for 2020 Central District set and drift gillnet fisheries and Northern District set gillnet fishery for the following 8 reporting groups: (1) the largest producer of sockeye salmon on the west side of Cook Inlet (Crescent River; Crescent); (2) the remaining West Cook Inlet producers (West); (3) the lakes monitored by weirs in the Susitna/Yentna Rivers (Judd/Chelatna/Larson lakes) with the addition of the Mama and Papa Bear Lakes and Talkeetna Sloughs population (JCL); (4) the remaining producers in the Susitna/Yentna Rivers (SusYen); (5) the only major creek monitored with a weir in the Knik/Turnagain/Northeast Cook Inlet area (Fish Creek; Fish); (6) the remaining Knik/Turnagain/Northeast Cook Inlet producers (KTNE); (7) the composite of all populations within the Kenai River (Kenai); and (8) the composite of all populations within the Kasilof River (Kasilof).
Book Synopsis Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2012-2013 by : Andrew W. Barclay
Download or read book Genetic Stock Identification of Upper Cook Inlet Sockeye Salmon Harvest, 2012-2013 written by Andrew W. Barclay and published by . This book was released on 2017 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed stock analysis based on genetic data has been used to estimate the stock compositions of sockeye salmon Oncorhynchus nerka harvested in commercial fisheries in Upper Cook Inlet (UCI), Alaska, since 2005. Here we report the genetic mixed stock analysis samples representing 99% of the 2012 and 2013 UCI commercial fishery harvests. Postseason analyses were performed using a previously reported baseline of 69 populations and 96 single nucleotide polymorphic markers, with the addition of 2 populations in the West reporting group (Harriet Creek and Packers Lake late run). Stock composition patterns in the commercial fishery were similar to previous years: eastern fisheries generally captured more Kenai and Kasilof rivers fish than western and northern fisheries; and gillnet fisheries closer to the Kenai or Kasilof river mouths harvested larger proportions of fish from those rivers. In 2012, however, the majority of Kasilof fish were harvested in the drift gillnet fisheries due to restrictions on the set gillnet fishery. Most stocks contributed similar proportions to the overall harvest in the UCI fishery compared to previously reported years, but Fish and Kasilof stocks were 38-86% below average and Susitna/Yentna River stocks were 19-77% above average. In 2013, 2 additional drift gillnet samples were analyzed to compare harvests in the Kenai and Kasilof expanded corridor (July 11) with the districtwide harvest (July 8). Kenai and Kasilof estimates were higher in the corridor sample than the districtwide sample, whereas estimates for the remaining reporting groups were generally lower, but these differences were not significant and could be attributed to the difference in sampling date. Estimates of stock-specific harvests for UCI commercial fisheries in 2012 and 2013 build upon previous years in refining understanding of productivity and the effect of management actions on the stock composition of commercial sockeye salmon harvests.
Book Synopsis Genetic Baseline of North American Sockeye Salmon for Mixed Stock Analyses of Kodiak Management Area Commercial Fisheries, 2014-2016 by : Kyle Shedd
Download or read book Genetic Baseline of North American Sockeye Salmon for Mixed Stock Analyses of Kodiak Management Area Commercial Fisheries, 2014-2016 written by Kyle Shedd and published by . This book was released on 2016 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precise, accurate estimates of stock-specific harvests of sockeye salmon (Oncorhynchus nerka) are lacking for commercial fisheries in the Kodiak Management Area (KMA. Such information would be useful for reconstructing runs, building accurate brood tables to define escapement goals, and refining management by identifying spatial and temporal harvest patterns of local and non-local stocks. Hence, the department developed a genetic baseline for mixed-stock analysis (MSA) to estimate the stock compositions of sockeye salmon harvests in select KMA commercial salmon fisheries from 2014-2016. This report describes the methodology used to build a baseline, examines costs and benefits of a reduced marker set, describes the performance of the baseline for MSA, and provides guidance on how to interpret biases documented in the MSA tests when evaluating future stock composition estimates of KMA fishery mixtures. This genetic baseline uses single nucleotide polymorphism (SNP) markers and builds on the Western Alaska Salmon Stock Identification Project (WASSIP) sockeye salmon baseline to include additional populations in KMA and extends coverage south from Cape Suckling, Alaska to the Columbia River, Washington. The final baseline contains 65,332 individuals from 762 collections representing 473 populations in 15 reporting groups. Mean population sample size was 138 individuals. We used 2 types of tests to measure the baseline’s ability to correctly allocate to reporting groups: 100% proof tests and fishery scenario tests. Correct allocations for 100% proof tests averaged 98.2%, ranged from 80.4% to 99.6%, and 73 of the 75 proof tests met our goal of 90% correct allocation. Fishery scenario tests did not indicate any consistent directional biases among reporting groups, but misallocation was observed between Frazer and Ayakulik. Reducing the baseline from 96 to 48 SNPs had negligible effects on MSA estimates. This baseline will provide accurate and precise estimates of stock composition in KMA sockeye salmon fisheries.
Book Synopsis Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Bristol Bay, Alaska, 2009 by : Tyler H. Dann
Download or read book Genetic Stock Composition of the Commercial Harvest of Sockeye Salmon in Bristol Bay, Alaska, 2009 written by Tyler H. Dann and published by . This book was released on 2011 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Bristol Bay Management Area supports the largest sockeye salmon Oncorhynchus nerka fishery in the world. Alaska Department of Fish and Game is responsible for managing fisheries under the sustained-yield principle. Sockeye salmon stocks in Bristol Bay can be exploited at rates up to 80%, so accurately estimating the stock composition of catch is critical to determining the total run (catch and escapement) of each stock. Accurate estimates of total runs are vital for managing under the sustained-yield principle because they provide the basis for establishing and meeting escapement goals. In recent years, the department has developed a genetics program for sockeye salmon in Bristol Bay to develop and apply genetics methods to identify the stock composition of commercial catch in the five commercial fishing districts. Here we present genetic results from 2009, compare them to results from 2006 through 2008, and to those based on traditional age-based methods"--P. 1.
