Demersal fishes and invertebrates traweled in the northeastern Chukchi and western Beaufort Seas, 1976-77
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Demersal fishes and invertebrates traweled in the northeastern Chukchi and western Beaufort Seas, 1976-77

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  • Personal Author:
  • Corporate Authors:
    United States. National Marine Fisheries Service.
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service)
  • Description:
    Thirty-five successful otter trawl tows were conducted in the northeastern Chukchi and western Beaufort Seas in August—September of 1976 and 1977. Nineteen species or species groups of fishes and 238 invertebrate taxa were identified. Three of the fishes (Boreogadus saida, Lycodes polaris, and Icelus bicornes) accounted for 65% of all fishes caught. Information on size, reproductive condition, and food habits is presented for those three as well as for Artediellus scaber, Aspidophoroides olriki, Liparis spp., Eumicrotremus derjugini, Gymnelis viridis, and lcelus spatula. The first Beaufort Sea records are reported for three species: Arctogadus glacialis, Lycodes raridens, and Eumesogrammus praecisus. 0f the invertebrate taxa, echinoderms (mainly brittle stars and crinoids) were the most abundant, and in most cases comprised more than 75% of the total trawl biomass. West of long. 154°W, brittle stars, Ophiura sarsi, were predominant whereas east of long. 150°W, the invertebrate community was characterized by crinoids (Heliometra glacialis) and small scallops (Delectopecten groenlandicus). Information on size, reproductive condition, and depth distribution is presented for brachyuran crabs and shrimps and the occurrence of other major invertebrate groups is summarized. A complete list of species and stations at which each was caught is included.
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  • Series:
    NOAA technical report NMFS SSRF ; 764
  • Document Type:
    Technical Report
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  • Rights Information:
    Public Domain
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    Library
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