Fisheries, Subsistence, and Habitat
Publications Searchable Database
Search Again| Division: | Sport Fish |
| Title: | Mixed stock analysis and age, sex, and length composition of Chinook salmon in Upper Cook Inlet, Alaska, 2015. |
| Author: | Eskelin, A., and A. W. Barclay. |
| Year: | 2016 |
| Report ID: | Alaska Department of Fish and Game, Fishery Data Series No. 16-16, Anchorage. |
| Abstract: | Chinook salmon were sampled for genetic tissue and age, sex, and length (ASL) composition from the Upper Cook Inlet Eastside set gillnet (ESSN) commercial fishery in 2015. Mixed stock analysis (MSA) was conducted on tissue samples that were collected to represent the harvest by date and area. The 4 reporting groups used to apportion the Chinook salmon harvest were Kenai River mainstem, Kenai River tributaries, Kasilof River mainstem, and Cook Inlet other. In 2015, the total reported harvest was 7,781 Chinook salmon, with an estimated composition of 5,988 (77%) Kenai River mainstem, 1,564 (20.1%) Kasilof River mainstem, 211 (2.7%) Cook Inlet other, and 19 (0.2%) Kenai River tributaries stocks. Kenai River mainstem fish have composed on average 69.1% of the harvest since 2010. Nearly all the remainder of the harvest was composed of Kasilof River mainstem fish. The overall age composition of the sample was 14.2% age-1.1 fish, 37.4% age-1.2 fish, 24.3% age-1.3 fish, 23.8% age-1.4 fish, and 0.3% age-1.5 fish. The sex composition was 69% males and 31% females. Average mid eye to tail fork (METF) length of the sample was 742 mm. |
| Keywords: | Chinook salmon, Upper Cook Inlet, Oncorhynchus tshawytscha, Kenai River, Kasilof River, late run, genetic stock identification, GSI, mixed stock analysis, MSA, ASL, ESSN, UCI, commercial fishery. |