Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet, Alaska, 2014 PDF Download

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Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet, Alaska, 2014

Migratory Timing and Abundance Estimates of Sockeye Salmon Into Upper Cook Inlet, Alaska, 2014 PDF Author: Aaron Dupuis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 105

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Book Description
Two offshore test fisheries (OTF) operated during the 2014 Upper Cook Inlet (UCI) commercial salmon fishing season. In 2014, the southern OTF was conducted from 1 July through 1 August and captured 3,366 sockeye salmon Oncorhynchus nerka representing 2,505 catch per unit of effort (CPUE) index points. The midpoint of the 2014 sockeye salmon run at the southern OTF occurred on 16 July. Two formal inseason estimates of the 2014 run size were made on 21 and 23 July; the 23 July analysis predicted a total run to UCI of 5.8 to 9.1 million sockeye salmon. The best-fit total run estimate deviated from the actual total run of 5.28 million fish by 72%. Two inseason estimates were made for the Kenai River sockeye salmon run on 21 and 23 July; the 23 July analysis predicted a total run to the Kenai River ranging between 2.67 and 5.65 million fish. The best-fit Kenai River total run estimate from this analysis (5.65 million fish) differed from the actual total run of 3.28 million fish by 72%. A mixed stock analysis using genetic data (MSA) was performed on samples collected during the test fishery, which showed similar stock compositions to previous years. The northern OTF stations were modified in 2014 to consist of 2 transects running across UCI from the Blanchard Line to the north end of Kalgin Island and from the south end of Kalgin Island back to the Kenai Peninsula. In 2014, the northern OTF operated from July 1 through July 30 and captured 2,362 sockeye salmon. In 2014, the MSA sampling for both OTF projects was expanded to include all coho salmon O. kisutch captured to estimate spatial and temporal stock compositions of the harvest.