Genetic stock composition analysis of the chinook salmon (oncorhynchus tshawytscha) bycatch from the 2016 bering sea walleye pollock (gadus chalcogrammus) trawl fishery / C.M. Guthrie III [and four others].

Format:

Book

Government document

Author/Creator:

Guthrie, Charles. M., author.

Contributor:

Alaska Fisheries Science Center (U.S.), issuing body.

Series:

NOAA technical memorandum NMFS-AFSC ; 365.

NOAA technical memorandum NMFS-AFSC ; 365

Language:

English

Subjects (All):

Bycatches (Fisheries)--Alaska--Bering Sea Coast.

Bycatches (Fisheries).

Walleye pollock fisheries--Bycatches--Alaska--Bering Sea Coast.

Walleye pollock fisheries.

Fish stock identification--Alaska--Bering Sea Coast--Genetic aspects.

Fish stock identification.

Fish stock assessment--Alaska--Bering Sea Coast.

Fish stock assessment.

Chinook salmon--Sampling--Alaska--Bering Sea Coast.

Chinook salmon.

Fish stock identification--Genetic aspects.

Walleye pollock fisheries--Bycatches.

Alaska--Bering Sea Coast.

Genre:

Online resources.

Physical Description:

1 online resource (v, 32, 2 unnumbered pages) : color illustrations, color maps.

Place of Publication:

[Seattle, Wash.] : U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, 2018.

Summary:

"A genetic analysis of samples from the Chinook salmon (Oncorhynchus tshawytscha) bycatch of the 2016 Bering Sea-Aleutian Island (BSAI) trawl fishery for walleye pollock (Gadus chalcogrammus) was undertaken to determine the overall stock composition of the bycatch. Samples were genotyped for 43 single nucleotide polymorphism (SNP) DNA markers and results were estimated using the Alaska Department of Fish and Game (ADF & G) SNP baseline. In 2016, genetic samples from the Bering Sea were collected using a systematic random sampling protocol where one out of every 10 Chinook salmon encountered was sampled. Based on the analysis of 1,910 Chinook salmon bycatch samples collected throughout the 2016 BSAI walleye pollock trawl fishery, Coastal Western Alaska and British Columbia regions (34% and 29% respectively) dominated the sample set with smaller contributions from West Coast US (14%), and North Alaska Peninsula (13%) regions. Analysis of temporal groupings within the pollock "A" and "B" seasons revealed changes in stock composition during the course of the year with lower contributions of Coastal Western Alaska and North Alaska Peninsula regions and higher contributions of West Coast US, British Columbia, and NW Gulf of Alaska, regions during the "B" season when compared to the "A" season"--PDF Abstract.

Notes:

"January 2018."

Includes bibliographical references (pages 25-27).

Online resource; title from PDF cover (NOAA, viewed January 26, 2018).

OCLC:

1020677722

Publisher Number:

doi:10.7289/V5/TM-AFSC-365