Operational Plan: Upper Cook Inlet Commercial Eastside Set Gillnet Chinook Salmon Harvest Composition Study 2021-2023 PDF Download

Author: Anthony Alexander Eskelin
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 43

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Book Description
Age, sex, and length composition information will be collected from harvested Chinook salmon in the Upper Cook Inlet Eastside set gillnet (ESSN) commercial fishery in 2021–2023. Genetic tissues from the harvest will also be collected and archived for potential future mixed stock analysis. The primary goal of the study is to estimate the age, sex, and length composition of the Chinook salmon harvest and to estimate the harvest of large (>75 cm METF) Kenai River Chinook salmon in the ESSN fishery for each season (2021–2023). Age, sex, and length composition will be estimated for each temporal and geographic stratum and for each season. The harvest of large Kenai River Chinook salmon will be estimated using historical (2010–2020) large fish stock compositions relative to the total large fish harvest for each temporal and geographic stratum and summed to the total for each season.

Author: Adam St. Saviour
Publisher:
ISBN:
Category : Fishing surveys
Languages : en
Pages : 0

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Book Description
The goals of this study are to estimate the participation and harvest of 5 personal use salmon fisheries that occur in Upper Cook Inlet. Harvests of sockeye (Oncorhynchus nerka) and Chinook (O. tshawytscha) salmon will be estimated from the Kasilof gillnet fishery; harvests of sockeye, coho (O. kisutch), and pink (O. gorbuscha) salmon will be estimated from the Kasilof dipnet fishery; harvests of sockeye, Chinook, coho, and pink salmon will be estimated from the Kenai dipnet fishery; and harvest of sockeye and coho salmon will be estimated from the Fish Creek and Susitna River dipnet fisheries. Incidental harvest of flounder will also be estimated for all for fisheries.

Author: Anthony Alexander Eskelin
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 48

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Book Description
Chinook salmon were sampled for genetic tissue and age, sex, and length from the Upper Cook Inlet Eastside set gillnet (ESSN) commercial fishery in 2021. Mixed-stock analysis (MSA) was conducted on tissue samples collected to represent harvest by reporting group, date, area, and size. Reported harvest in the ESSN fishery was 1,297 Chinook salmon of all sizes (all-fish harvest), with an estimated composition of 909 (70%) Kenai River mainstem, 166 (13%) Kasilof River mainstem, 217 (17%) Cook Inlet other fish, and 4 (

Author: Eric Wood
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 43

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Book Description
A creel survey will be conducted to estimate sport angler effort, catch, and harvest of large (≥75 cm mid eye to tail fork length) early- and late-run Chinook salmon in the lower Kenai River between the Warren Ames Bridge (river mile [RM] 5.1) and Slikok Creek sanctuary area (RM 18.6). Creel survey estimates will be geographically stratified in relation to the RM 13.7 Kenai River Chinook salmon sonar to provide angler effort, catch, and harvest of large Chinook salmon. A standardized inriver netting project will be conducted in the Kenai River at RM 8.6 to index abundance and estimate the age, sex, and length (ASL) composition of large early- and late-run Chinook salmon. Inseason estimates of Chinook salmon catch and harvest, used in conjunction with sonar passage estimates, inseason catch rates, and the length of returning Chinook salmon from the inriver netting study are used by fisheries managers for inseason management decisions to achieve escapement goals. This plan covers the creel survey and inriver netting studies for the 2021–2023 seasons.

Author: Anthony Alexander Eskelin
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 48

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Book Description
Chinook salmon were sampled for genetic tissue and age, sex, and length from the Upper Cook Inlet Eastside set gillnet commercial fishery in 2020. Mixed-stock analysis (MSA) was conducted on tissue samples collected to represent harvest by date and area. Reported harvest in the ESSN fishery was 852 Chinook salmon of all sizes (all-fish harvest), with an estimated composition of 561 (66%) Kenai River mainstem, 163 (19%) Kasilof River mainstem, 21 (3%) Kenai River tributaries, and 107 (13%) Cook Inlet other fish. Kenai River mainstem fish have composed on average 70% of the all-fish harvest since 2010, ranging from 61% (2014) to 79% (2017). Estimated harvest of large (75 cm mid eye to tail fork and longer) Kenai River mainstem Chinook salmon in 2020 was 166 fish (19% of the all-fish harvest and 68% of the large fish harvest). Large Kenai River mainstem fish have composed on average 33% of the all-fish harvests since 2010 ranging from 19% (2020) to 63% (2017). Large Kenai River mainstem fish have composed on average 69% of the large fish harvest ranging from 60% (2010 and 2019) to 79% (2017). Age composition of the all-fish harvest in 2020 was 33% age-1.1 (jacks), 36% age-1.2, 22% age-1.3, and 9% age-1.4 fish. The percentage of age-1.4 fish (10%) in the all-fish harvest was the lowest observed, and the percentage of jacks (33%) was the highest observed since sampling began in 1987. Sex composition of the all-fish harvest was 88% males and 12% females. The average mid eye to tail fork length was 628 mm in 2020, the lowest ever observed.

Author: Diane P. Loopstra
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 10

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Book Description
Thermal marks and adipose finclips will be applied to hatchery-produced Chinook salmon smolt released at Ninilchik River and Crooked Creek. Thermal marks will also be applied to hatchery-produced Chinook salmon released in Cook Inlet, Prince William Sound, and Resurrection Bay as well as to hatchery-produced coho salmon smolt released in Cook Inlet and Resurrection Bay. This project will be used to support other projects designed to evaluate the contribution of these hatchery-produced fish to sport fisheries and spawning escapements. Adipose finclips will also aid in the selection of naturally-produced Chinook salmon for broodstock, which will be used to produce progeny for release at Ninilchik River and Crooked Creek. Thermal marks may be used to monitor straying at broodstock collection sites.

Author: Adam St. Saviour
Publisher:
ISBN:
Category : Fishing surveys
Languages : en
Pages : 33

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Book Description
The goals of this study are to estimate the participation and harvest of 5 personal use salmon fisheries that occur in Upper Cook Inlet. Harvests of sockeye (Oncorhynchus nerka) and Chinook (O. tshawytscha) salmon will be estimated from the Kasilof gillnet fishery; harvests of sockeye, coho (O. kisutch), and pink (O. gorbuscha) salmon will be estimated from the Kasilof dipnet fishery; harvests of sockeye, Chinook, coho, and pink salmon will be estimated from the Kenai dipnet fishery; and harvest of sockeye and coho salmon will be estimated from the Fish Creek and Susitna River dipnet fisheries. Incidental harvest of flounder will also be estimated for all for fisheries.

Author: Brian W. Elliott
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0

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Book Description
An ongoing coded wire tag project, used as part of a stock assessment program for Chilkat River Chinook salmon Oncorhynchus tshawytscha and coho salmon O. kisutch, will be conducted during fall 2022 and spring 2023 to provide estimates of smolt abundance and marine harvest for Chinook and coho salmon. This project uses modified Peterson 2-event mark–recapture methods to estimate smolt abundance, and port sampling of coded wire tags in mixed stock commercial and sport fisheries to estimate marine harvest for both species. Juvenile salmon will be measured for length and weight, marked with adipose fin clips, and tagged with coded wire tags in fall 2022 (juvenile Chinook salmon) and spring 2023 (Chinook and coho salmon smolt) as event 1 of the mark–recapture study. During event 2, adult Chinook salmon will be sampled for missing adipose fins, coded wire tags, age, sex, and length in Chilkat River fishwheels and drift gillnets, which are operated in the lower Chilkat River as part of a separate adult mark–recapture project. Adult Chinook salmon will be also sampled for missing adipose fins, coded wire tags, and age, sex, and length during Chilkat River drainage spawning grounds surveys to complete event 2 sampling. Coho salmon will also be sampled as adults during event 2 in the lower Chilkat River fishwheels. Age composition of Chinook salmon adults will be estimated by scale ageing techniques; age composition of coho salmon smolt and adults will also be estimated. The Alaska Department of Fish and Game uses these data to make local and regional management decisions. Chilkat River Chinook salmon is a Pacific Salmon Commission exploitation rate and escapement indicator stock and has recently been added to the base model of abundance indicator stocks for the Chinook Technical Committee, which influences coastwide management.

Author: Samantha Oslund
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 0

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Book Description
Aerial index counts from 22 NCIMA Chinook salmon streams are used detect trends in escapement for various NCIMA stocks and are used to assist fisheries managers with future management and refinement of escapement goals for streams and stocks. The objectives of this project are to count the number of Chinook salmon in each of 22 selected NCIMA area streams during 1 annual survey of each stream between 15 July and 7 August in 2021 through 2025, and to count the number of coho salmon in each of 8 selected NCIMA area streams during 1 annual survey of each stream between 20 September and 4 October in 2021 through 2025. Surveys may be limited by budgetary constraints and priority will be given to streams and stocks with escapement goals.

Author: Matthew R. Catterson
Publisher:
ISBN:
Category : Fishing surveys
Languages : en
Pages : 0

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Book Description
Sport anglers fishing from shore in the Juneau area of Southeast Alaska target and harvest Chinook salmon Oncorhynchus tshawytscha, primarily during April – August, the duration of which can be truncated due to wild stock management measures. Angler effort, catch, and harvest data will be collected from June through August 2023 from shore-based anglers at 2 prioritized locations in the Juneau area associated with Alaska hatchery release sites. Harvest sampling will be used to collect biological samples and associated data to estimate the age, length, and genetic composition of the Chinook salmon harvest. Chinook salmon will be inspected for missing adipose fins, indicating the head should be removed to recover a coded wire tag.