Author: Michelle Stratton
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 12
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Book Description
This project will continue the Genetic Stock Identification (GSI) project on sockeye salmon escaping through the Chignik weir following protocol established by the Gene Conservation Laboratory (GCL) of the Alaska Department of Fish and Game (ADF&G). Concurrent with ASL sampling, 190 fish at each of 6 strata (1,140 total samples) during the transition period will have the left axillary process collected and sent to Anchorage for analysis for post-season stock apportionment of Chignik River early- and late-run sockeye salmon.
Author: Michelle Stratton
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 12
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Book Description
This project will continue the Genetic Stock Identification (GSI) project on sockeye salmon escaping through the Chignik weir following protocol established by the Gene Conservation Laboratory (GCL) of the Alaska Department of Fish and Game (ADF&G). Concurrent with ASL sampling, 190 fish at each of 6 strata (1,140 total samples) during the transition period will have the left axillary process collected and sent to Anchorage for analysis for post-season stock apportionment of Chignik River early- and late-run sockeye salmon.
Author: Michelle Stratton
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 14
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Book Description
In the Chignik Management Area (Area L), the Chignik weir is the primary mode of enumeration for sockeye salmon Oncorhynchus nerka into the Chignik River. Annually, the Alaska Department of Fish and Game (ADF&G) samples salmon escapement at the Chignik weir for age, sex, and length (ASL) data. The biological information collected from salmon escapements provide the foundation for preseason run forecasts, escapement goal evaluation, and run reconstruction. Every week throughout the season, 240 sockeye salmon are sampled. Sockeye salmon scales are collected using established protocols common to the Westward Region.
Author: Matthew Olson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 33
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Book Description
This operational plan describes the procedures for the sockeye salmon Oncorhynchus nerka smolt sampling project conducted by the Alaska Department of Fish and Game (ADF&G) in the Chignik River system. The project goal is to evaluate and document size and abundance trends of sockeye salmon smolt in the Chignik River system to understand rearing capacity and habitat use. The research is designed to assess age structure, fish body condition, and provide additional context for the adult sockeye salmon forecast. Age structure of the population will be estimated from scales of sockeye salmon smolt collected using a beach seine. Juvenile salmon habitat use will be examined by beach seining in near-shore marine environment. Findings from this project are vital for understanding effects of the commercial fishery and environmental changes occurring in the Chignik River system on the sockeye salmon population.
Author: Justin T. Priest
Publisher:
ISBN:
Category : Coho salmon
Languages : en
Pages : 9
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Book Description
"This project is a two-year effort to collect tissue samples from coho salmon Oncorhynchus kisutch populations across Southeast Alaska to create a more comprehensive genetic baseline. Previous genetic tissue sampling of coho salmon in Southeast Alaska has been conducted opportunistically in conjunction with other field work; this project will add to existing sample collections and target undersampled populations, with a focus on populations in transboundary rivers and the Northern Boundary Area that are managed under the Pacific Salmon Treaty. The creation of a genetic baseline for coho salmon will assist in future stock management by allowing population differentiation to inform regulatory decisions and allow for genetic stock identification (GSI) of commercial harvests."--Page 1
Author: Julie Bednarski
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 18
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Book Description
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.
Author: Matthew R. Catterson
Publisher:
ISBN:
Category : Coho salmon
Languages : en
Pages : 0
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Book Description
This project is part of a multiyear effort to collect tissue samples from coho salmon Oncorhynchus kisutch populations across Southeast Alaska to create a comprehensive genetic baseline. Previous genetic tissue sampling of coho salmon in Southeast Alaska has been conducted opportunistically in conjunction with other field work. This project will add to existing sample collections, target under sampled populations, and collect genetic samples from geographic areas that have not yet been targeted. The creation of a genetic baseline for coho salmon will provide information on population differentiation to inform regulatory decisions, hatchery releases, and allow for genetic stock identification (GSI) of fishery harvests.
Author: Richard A. Hoffman (Biologist)
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 29
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Book Description
The Alaska Department of Fish and Game, Division of Commercial Fisheries, monitors annual escapements of salmon returning to the Situk River system near Yakutat, Alaska. A weir in the lower river provides the primary mode of enumeration for sockeye Oncorhynchus nerka and Chinook O. tshawytscha salmon escapements into the Situk River. Information provided by this project is used inseason to manage the Situk-Ahrnklin Inlet commercial set gillnet fishery and the inriver sport fisheries to ensure escapement goals are met and to maximize and sustain the harvest of salmon from the Situk River. A two-person crew will enumerate all species of salmon through the Situk River weir and sample adult sockeye and Chinook salmon for biological characteristics (age, sex, and length). This report provides operational guidelines for the Situk River adult salmon weir project, including salmon enumeration, sampling procedures, and weir protocols.
Author: Nicole L. Zeiser
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 38
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Book Description
The Chilkat Lake sockeye salmon (Oncorhynchus nerka) run, which spawns near Haines, is one of the largest in Southeast Alaska and contributes substantially to harvests in the District 15 commercial drift gillnet fishery in Lynn Canal. This operational plan outlines objectives, methods, and timelines for conducting sockeye salmon stock assessment designed to (1) estimate annual escapement, (2) provide information for inseason fishery management, and (3) reconstruct runs and assess stock status. The Chilkat Lake sockeye salmon run is managed for a biological escapement goal of 70,000–150,000 fish, which is enumerated with a Dual-Frequency Identification Sonar (DIDSON) system operated in conjunction with a standard picket weir located just downstream of the lake outlet. Genetic mixed stock analysis of weekly sockeye salmon harvests in the District 15 commercial drift gillnet fishery provides stock composition estimates that guide inseason management of the fishery (detailed in a separate Chilkoot Lake sockeye salmon operational plan). Biological sampling, along with escapement enumeration and stock-specific harvest data, allows for total run reconstruction required for escapement goal review. This project also supports the collection of basic limnology information at Chilkat Lake.
Author: Andrew W. Piston
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 14
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Book Description
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.
