Post-season Stock Composition Analysis of Upper Cook Inlet Sockeye Salmon Harvest, 2005-2007 PDF Download
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Author:
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Category : Fish populations
Languages : en
Pages : 74
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Book Description
This report discusses genetic data that were collected from sockeye salmon, Oncorhynchus nerka, originating from all major systems in upper Cook Inlet, Alaska, that produce sockeye salmon.
Author:
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 74
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Book Description
This report discusses genetic data that were collected from sockeye salmon, Oncorhynchus nerka, originating from all major systems in upper Cook Inlet, Alaska, that produce sockeye salmon.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock identification
Languages : en
Pages : 34
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Book Description
Genetic mixed stock analysis 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 of samples representing 90.5% of the 2014 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). Some stock composition patterns in the commercial fishery were similar to previous years. Drift gillnet and eastern fisheries captured greater proportions of Kenai and Kasilof rivers fish than western and northern fisheries; western set gillnet fisheries harvested a greater proportion of fish from the west side of Cook Inlet, but the drift gillnet fishery harvested greater numbers of west side fish; set gillnet fisheries closer to the Kenai or Kasilof river mouths harvested larger proportions of fish from those rivers; and set gillnet fishing areas in the Northern District generally harvested fish from nearby rivers. Unexpectedly, Susitna River fish made up a higher fraction of the drift gillnet harvest when the fleet was restricted to eastern Cook Inlet waters than when they were not restricted to eastern waters. Estimates of stock-specific harvests for UCI commercial fisheries in 2014 build upon previous years in refining understanding of productivity and the effect of management actions on the stock composition of commercial sockeye salmon harvests.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock identification
Languages : en
Pages : 62
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Book Description
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.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 55
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Book Description
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.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 54
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Book Description
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.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 109
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Book Description
This report updates previously reported analyses of genetic population structure and mixed-stock analysis of sockeye salmon, Oncorhynchus nerka, originating from all major spawning systems and harvested in commercial fisheries in Upper Cook Inlet, Alaska.
Author: Andrew W. Barclay
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 60
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 632
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Book Description
Author: William D. Templin
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 133
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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 for mixed stock analysis (MSA) of fisheries samples to more clearly describe harvest patterns of chum and sockeye salmon stocks in western Alaska fisheries. Stock composition estimates for temporal strata across fisheries are required to estimate stock-specific harvest numbers and rates. This report describes the methods used to estimate stock compositions for chum salmon, presents stock composition estimates, and provides guidance on how to interpret biases documented in MSA baseline tests when evaluating stock composition estimates of WASSIP catch samples.
Author: Tyler H. Dann
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 258
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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 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.
