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Book Length weight Relationships of Selected Sockeye Salmon Stocks in the Kodiak Archipelago 1995

Download or read book Length weight Relationships of Selected Sockeye Salmon Stocks in the Kodiak Archipelago 1995 written by Ivan Vining and published by . This book was released on 1996 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sockeye salmon length and weight data were collected from seven system--Karluk, Ayakulik, Upper Station, Frazer, Afognak, Spiridon and Saltery--in the Kodiak Archipelago, the purpose being to estimate baseline allometric equations by system, run and sex as a means to convert length estimates to weight estimates.

Book Estimating Run Timing of Lake Clark Sockeye Salmon Relative to Other Kvichak River Drainage Populations

Download or read book Estimating Run Timing of Lake Clark Sockeye Salmon Relative to Other Kvichak River Drainage Populations written by Christopher Habicht and published by . This book was released on 2005 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests the possibility of using genetic methods to determine the run-timing of Lake Clark-bound sockeye salmon relative to other Kvichak River stocks in order to manage reductions in escapement of Lake Clark stocks.

Book History of the Fishery and Summary Statistics of the Sockeye Salmon Oncorhynchus Nerka Runs to the Chignik Lakes Alaska 1888 1966

Download or read book History of the Fishery and Summary Statistics of the Sockeye Salmon Oncorhynchus Nerka Runs to the Chignik Lakes Alaska 1888 1966 written by Michael L. Dahlberg and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Russian River Early run Sockeye Salmon Run Timing Into the Kenai River 2018 2020

Download or read book Russian River Early run Sockeye Salmon Run Timing Into the Kenai River 2018 2020 written by Anthony Alexander Eskelin and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sockeye salmon were sampled for genetic tissue in the lower Kenai River at river mile (RM) 8.6 during the 2018–2020 early runs (prior to 1 July) for genetic mixed stock analysis (MSA) of stock composition for 3 reporting groups (Russian River Early, Russian River Late, and Kenai River Other) and 5 temporal strata (16 May–3 June, 4–10 June, 11–16 June, 17–23 June, and 24–30 June) each year. The MSAs represent the first stock composition estimates for sockeye salmon entering the Kenai River during the early run. Stock compositions were dominated by Russian River Early fish each year, especially for strata occurring prior to 24 June. Daily Kenai River RM 13.7 sonar passage estimates of fish between 40 cm and 75 cm (small fish) were used with stock composition estimates by stratum and summed to estimate Russian River Early sockeye salmon passage prior to 1 July each year. Russian River Early fish represented an estimated 0.91 (2018), 0.92 (2019), and 0.75 (2020) of the estimated small fish passage at RM 13.7 each year and averaged 0.86 for all 3 years (2018–2020). Estimated passage of Russian River Early fish was highest for the 4–10 June stratum (35% of each year’s early run, on average) and the 11–16 June stratum (28% of each year’s early run, on average), with those 2 strata accounting for 62% of estimated Russian River Early fish passage on average at RM 13.7. The last stratum (24–30 June) had the lowest estimated passage of Russian River Early fish, accounting for 7% of each year’s early run, on average. These results will be used to better predict inseason run strengths of Russian River early-run sockeye salmon, thereby increasing management precision to meet the escapement goal.

Book Stock Assessment of Sockeye Salmon in the Buskin River 2018 2021

Download or read book Stock Assessment of Sockeye Salmon in the Buskin River 2018 2021 written by Mark J. Witteveen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game, Division of Sport Fish, has assessed the annual run of Buskin River sockeye salmon (Oncorhynchus nerka) on Kodiak Island, Alaska, since 1990. Buskin River sockeye salmon weir counts were 4,284, 12,297, 7,741, and 2,330 fish for 2018–2021, respectively. Weir counts for Lake Louise were 83, 73, 53, and 1,896 sockeye salmon for 2018–2021, respectively. Reported annual subsistence harvests for the Buskin River Section were 474, 836, and 1,620 sockeye salmon for 2018–2020, respectively; accurate harvest is not available for 2021 at this time. In interviews conducted with 11 subsistence users in 2019, 100% reported that the Buskin River was a traditional fishing location, and 73% reported that they subsistence fished in other areas. Interviews were not conducted in 2018 due to a low run or in 2020 and 2021 due to COVID-19. Enumerated sockeye salmon spawning escapement for the entire drainage (Buskin Lake and Louise Lake weirs) was 4,367, 12,370, 7,794, and 4,226 fish for 2018–2021, respectively. Based on a Bayesian spawner–recruitment analysis of the Buskin Lake system, estimated spawning escapement for maximum sustained yield is about 5,700 fish (95% credibility interval = 4,300–8,000). A sustained yield probability analysis supports the current Buskin Lake system biological escapement goal (BEG) range of 5,000–8,000 sockeye salmon. Age-1.2, -1.3, -2.2, and -2.3 sockeye salmon composed 93–99% of the Buskin River run. Male to female ratios for the Buskin River were between 0.6 and 1.1 to 1 for 2018–2021. Samples taken from the Lake Louise sockeye salmon run and the subsistence harvest were too low to provide reliable estimates of age and sex composition.

Book Harvest and Harvest Rates of Sockeye Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program WASSIP 2006 2008

Download or read book Harvest and Harvest Rates of Sockeye Salmon Stocks in Fisheries of the Western Alaska Salmon Stock Identification Program WASSIP 2006 2008 written by Christopher Habicht and published by . This book was released on 2012 with total page 751 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 Fishery Market News

Download or read book Fishery Market News written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet Alaska 2013

Download or read book Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet Alaska 2013 written by Aaron Dupuis and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 2013 Upper Cook Inlet (UCI) commercial salmon fishing season, 2 offshore test fisheries (OTF) were conducted using drift gillnets. The southern OTF originates on the east side of Cook Inlet near Anchor Point and has been operational since 1979. Its objective is to assess the size and timing of the sockeye salmon Oncorhynchus nerka run entering UCI, including the Kenai River, during the commercial salmon fishing season. In 2013, the southern OTF occurred from 1 July through 30 July and captured 2,020 sockeye salmon representing 1,342 catch per unit of effort index points. Due to adverse weather conditions and mechanical difficulties 1 or more stations were not fished during 8 days and no fishing occurred on 3 days. Most of the missed stations occurred near the traditional peak of the sockeye salmon run. Because of the timing and relatively high number of missed stations, no formal inseason estimates of the size and timing of the 2013 sockeye salmon run were made using OTF data. A mixed stock analysis using genetic data (MSA) was performed on samples collected during the test fishery, which showed similar stock compositions to previous years. A second UCI northern test fishery, which began in 2012, was continued in 2013 to assess the potential of spatial and temporal separation of Susitna River sockeye salmon migrating through Cook Inlet using MSA. The northern OTF is located in the northern area of the Central District with the transect running across UCI from the Blanchard Line to the Drift River. In 2013, the northern OTF operated from July 1 through July 30 and captured 3,333 sockeye salmon. In 2013, the MSA sampling for both OTF projects were expanded to include all coho salmon O. kisutch captured to identify spatial and temporal stock compositions of the harvest.

Book Inriver Abundance of Stikine River Sockeye Salmon 2022 2024

Download or read book Inriver Abundance of Stikine River Sockeye Salmon 2022 2024 written by Kristin Courtney and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2022 forecast of Stikine River sockeye salmon, Oncorhynchus nerka, run abundance is poor and we anticipate very little harvest opportunity for either U.S. or Canadian fisheries. Since 1994, we have almost exclusively relied on the Canadian lower river commercial fishery to provide the stock-specific information that is used to complete the mixed stock run reconstruction for Stikine River sockeye salmon. It is highly likely there will be little commercial fishing opportunity in 2022 to gather this pertinent information. To obtain stock composition data necessary to estimate the inriver abundance, we will continue to conduct a sockeye salmon stock assessment program at Kakwan Point that began in 2021. The project will be conducted in conjunction with the existing Stikine River Chinook salmon, O. tshwaytscha, stock assessment program, and will extend the project through the end of the sockeye salmon run in mid-August. Tissue samples will be collected from sockeye salmon for genetic mixed stock analysis and for use in a genetic mark–recapture study to estimate inriver abundance based on an expansion of the Tahltan stock that is monitored via weir. We will also gather daily CPUE information, capture and spaghetti tag sockeye salmon, and estimate the age, sex, and length composition for sockeye salmon captured at Kakwan Point.

Book Stock Composition of Sockeye Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program WASSIP 2006 2008

Download or read book Stock Composition of Sockeye Salmon Harvests in Fisheries of the Western Alaska Salmon Stock Identification Program WASSIP 2006 2008 written by Tyler H. Dann and published by . This book was released on 2012 with total page 258 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 of fisheries samples to more clearly describe harvest patterns of sockeye and chum salmon stocks in western Alaska fisheries (from Chignik Area to Kuskokwim Area for sockeye salmon). Stock composition estimates for temporal strata across fisheries are required to estimate stock-specific harvest numbers and rates. This report describes the methodology used to estimate stock compositions for sockeye salmon, presents stock composition estimates, and provides guidance on how to interpret biases documented in the genetic baseline.

Book Stikine River Sockeye Salmon Stock Assessment 2021

Download or read book Stikine River Sockeye Salmon Stock Assessment 2021 written by Julie Bednarski and published by . This book was released on 2021 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2021 forecast of Stikine River sockeye salmon, Oncorhynchus nerka, run abundance is poor and we anticipate very little harvesting opportunity for either U.S. or Canadian fisheries. Since 1994, we have almost exclusively relied on the Canadian lower river commercial fishery to provide the migratory timing information that is used to complete the mixed stock run reconstruction for Stikine River sockeye salmon. It is highly likely there will be no fishing opportunity in 2021 to gather this pertinent information. To obtain stock composition data necessary to estimate the inriver abundance, we are initiating a sockeye salmon stock assessment program at Kakwan Point. The project will be conducted in conjunction with the existing Stikine River Chinook salmon, O. tshwaytscha, assessment program, and will extend the project through the end of the sockeye salmon run in late August. Tissue samples will be collected from sockeye salmon for genetic mixed stock analysis and for use in a genetic mark–recapture study to estimate inriver abundance based on an expansion of the Tahltan stock that is monitored via weir. We will also gather daily catch per unit effort (CPUE) information and estimate the age, sex and length (ASL) composition for sockeye salmon captured. This stock assessment program is designed to capture sockeye salmon in proportion to abundance during immigration; therefore, it is expected that it will provide an unbiased estimate of abundance. This estimate will be assessed by TTC postseason for use in the Stikine River sockeye salmon run reconstruction.

Book Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet Alaska 2015

Download or read book Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet Alaska 2015 written by Aaron Dupuis and published by . This book was released on 2016 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2015, the southern offshore test fishery (OTF) was conducted from July 1 through July 30 and captured 2,378 sockeye salmon Oncorhynchus nerka representing 1,609 catch per unit of effort (CPUE) index points. The midpoint of the 2015 sockeye salmon run at the southern OTF occurred on 25 July. A formal inseason estimate of the 2015 run size was made on July 27; this analysis predicted a total run to Upper Cook Inlet (UCI) of 5.9 million sockeye salmon. The best-fit total run estimate deviated from the estimated total run of 6.30 million fish by 6.5%. An inseason estimate was also made for the Kenai River sockeye salmon run on July 27; the July 27 analysis predicted a total run to the Kenai River ranging between 2.20 and 3.53 million fish. The best-fit Kenai River total run estimate from this analysis (3.53 million fish) differed from the estimated total run of 3.89 million fish by 9.3%. A mixed stock analysis using genetic data (MSA) was performed on samples collected during the test fishery, which showed similar stock compositions to previous years. The MSA sampling for the OTF project was included all coho salmon O. kisutch captured to estimate spatial and temporal stock compositions of the harvest.