Estimated Run Timing of Selected Sockeye Salmon Stocks on the West and East Sides of Kodiak Island PDF Download
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Author: Bruce M. Barrett
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 53
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Book Description
Author: Bruce M. Barrett
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 53
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Book Description
Author: Richard Gard
Publisher:
ISBN:
Category : Sockeye salmon
Languages : en
Pages : 428
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Book Description
Author: Charles Orrin Swanton
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 194
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Book Description
Author: Ivan Vining
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 21
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Book Description
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.
Author: Christopher Habicht
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 30
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Book Description
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.
Author: Anthony Alexander Eskelin
Publisher:
ISBN:
Category : Fish stock identification
Languages : en
Pages : 0
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Book Description
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.
Author: Christopher Habicht
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 751
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Book Description
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.
Author: Michael L. Dahlberg
Publisher:
ISBN:
Category : Salmon fisheries
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages :
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Author: Mark J. Witteveen
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 0
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Book Description
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.
