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Alaska Fisheries Science Center Quarterly Report : October, November, December, 1995
Filetype[PDF-800.25 KB]


Details:
  • Alternative Title:
    The Origins of Chum Salmon Bycatch in the 1994 Bering Sea Trawl Fishery for Walleye Pollock Determined by Genetic Stock Identification
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  • Description:
    The Bering Sea trawl fishery for walleye pollock Theragra chalcogramma, has incidentally harvested large numbers (200,000 in1993) of chum salmon, Oncorhynchus keta, in recent years. The fishery takes place north of the Alaska Peninsula (Fig. 1) from January to March (the "A" fishery) and from late August to mid-October (the "B" fishery), with the majority of the incidental harvest (or bycatch) of chum salmon taken in the B fishery. This bycatch became a concern to western Alaska subsistence fishermen and the Alaska Department Fish and Game (ADF&G) when spawning escapements of chum salmon in western Alaska rivers AFSC Quarterly Report declined below historic levels during the early 1990s. The stock origins of the chum salmon bycatch in the Bering Sea trawl fishery were viewed as potentially important elements in investigating the declining numbers of the western Alaska stocks and in determining whether the Bering Sea trawl fishery affected the decline.

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