Alaska Department of Fish and Game Upper Cook Inlet Coho Salmon Research Program PDF Download
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Author: Stephen M. Fried Publisher: ISBN: Category : Coho salmon Languages : en Pages : 19
Book Description
Summarizes the status of the four major aspects of the Upper Cook Inlet Coho Salmon Research Program: harvest accounting, escapement estimation, wild stock assessment, hatchery supplementation and assessment.
Author: Stephen M. Fried Publisher: ISBN: Category : Coho salmon Languages : en Pages : 19
Book Description
Summarizes the status of the four major aspects of the Upper Cook Inlet Coho Salmon Research Program: harvest accounting, escapement estimation, wild stock assessment, hatchery supplementation and assessment.
Author: Andrew W. Barclay Publisher: ISBN: Category : Coho salmon Languages : en Pages : 20
Book Description
This report summarizes the status of activities associated with legislative increments directed at Cook Inlet coho Oncorhynchus kisutch and sockeye O. nerka salmon genetic studies conducted by the Division of Commercial Fisheries Gene Conservation Laboratory and Central Region staff. The coho salmon study involved 3 investigative phases. In Phase I, analysis of existing samples indicated that sufficient population genetic structure exists among populations of Cook Inlet coho salmon to warrant construction of a full genetic baseline for genetic stock identification. In Phase II, development of the genetic baseline indicated 8 potential genetic reporting groups for genetic stock identification of Cook Inlet coho salmon fishery samples. The final report for Phase II will be published in the spring of 2016. In Phase III genetic stock identification was used to estimate the stock composition of harvests in test and commercial fisheries of Cook Inlet for the 2013-2015 seasons. Results from these analyses will be used to determine spatial and temporal distribution of coho salmon in the offshore test fishery and commercial harvest and to estimate the total harvest of selected stocks in the commercial salmon fisheries. During this period over 23,000 samples were collected for analysis from the Central District drift gill net fishery, Upper subdistrict set gillnet fishery, General and Eastern subdistrict set gillnet fisheries, and the northern and southern offshore test fisheries. The final report for Phase III is expected to be completed by the end of summer 2016. A fourth study, for sockeye salmon, will analyze the DNA from archived scales to retrospectively estimate historic stock compositions of Cook Inlet harvests. This is the third year of that 5 year project in which the laboratory will reconstruct escapement and total runs of sockeye salmon for Susitna River and the major systems in Upper Cook Inlet.
Author: Andrew W. Barclay Publisher: ISBN: Category : Coho salmon Languages : en Pages : 47
Book Description
This report describes the current status of genetic studies for coho salmon in Southcentral Alaska and initial evaluations for mixed-stock analysis (MSA) in Cook Inlet. Coho salmon are harvested in commercial fisheries in Upper Cook Inlet, Alaska, with an average annual harvest of 171,273 fish (2005-2014). Harvests often occur in areas where stocks intermingle, so the exploitation and productivity of individual stocks are not well known. This lack of knowledge hinders fishery management based on the sustained yield principle. Mixed-stock analysis has been used to estimate stock compositions of fishery mixtures in coho salmon elsewhere in the Pacific Northwest; however, only limited baseline existed for Cook Inlet. Within Cook Inlet, we examined a baseline of 84 populations for 86 single nucleotide polymorphism markers to examine population structure and test for potential reporting groups (stocks). From the southern edge of the Kenai Peninsula, we analyzed 3 populations to investigate the genetic legacy of stocking programs in the area. Population structure indicated that populations generally cluster by drainage, with the most genetically distinct populations in the more southerly drainages and in the upper reaches of the larger drainages. Testing of potential reporting groups revealed 7 groups with adequate genetic divergence to meet the criteria for reporting groups. Due to the sparse representation of collections in the baseline for the Yentna River drainage, additional representation within this drainage would be prudent before using it as its own reporting group in MSA. The data presented in this report will allow for additional baseline evaluation tests tailored for specific MSA study objectives pertinent to Cook Inlet mixed-stock fisheries in the future. The 3 populations from the southern edge of the Kenai Peninsula were most similar to each other, but divergent from Cook Inlet populations, suggesting little genetic introgression from stocking programs.
Author: Stephen M. Fried
Author: Stephen M. Fried
Author: Douglas S. Vincent-Lang
Author: Jamie A. Carlon
Author: Kristine J. Dunker
Author: Robert A. Clark
Author: Alaska. Department of Fish and Game
Author: Michael L. Bethe
Author: Andrew W. Barclay
Author: Andrew W. Barclay
Author: Robert S. Chlupach