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首页> 外文期刊>Polar biology >The first demersal trawl survey of benthic fish and invertebrates in the Beaufort Sea since the late 1970s
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The first demersal trawl survey of benthic fish and invertebrates in the Beaufort Sea since the late 1970s

机译：自1970年代末以来，对波弗特海底栖鱼类和无脊椎动物的首次海底拖网调查

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摘要

This study represents the first demersal trawl survey of marine fishes and invertebrates in offshore waters of the Beaufort Sea since 1977. Species composition, distribution, and abundance of demersal fish and benthic invertebrates were assessed with standard methods and demersal trawl gear by the Alaska Fisheries Science Center. Fishes made up 6% of the total catch weight, and invertebrates made up the remaining 94% of the catch weight. A total of 32 species of fish were identified, two taxa were identified to genus and one to family, and 174 taxa of invertebrates were identified. The most abundant demersal fishes were polar cod (Boreogadus saida), eelp-outs (Lycodes spp.), Bering flounder (Hippoglossoides robustus), and walleye pollock (Theragra chalcogramma). The most abundant invertebrates were notched brittle stars (Ophiura sarsi), snow crab {Chionoecetes opilio), mussels {Musculus spp.), and the mudstar (Ctenodiscus crispatus). We documented or confirmed extension to the known ranges of four species of fishes: walleye pollock, Pacific cod (Gadus macrocephalus), festive snailfish (Liparis marmoratus), and eyeshade sculpin (Nautichthys pribilo-vius). We also documented the presence of commercial-sized snow crab {Chionoecetes opilio), which has not previously been recorded in the North American Arctic.
机译：这项研究是自1977年以来首次对波弗特海近海海水鱼类和无脊椎动物进行的深海拖网调查。阿拉斯加渔业科学通过标准方法和深海拖网设备评估了深海鱼类和底栖无脊椎动物的物种组成，分布和丰富度中央。鱼类占渔获总重量的6％，而无脊椎动物占渔获总重量的其余94％。总共鉴定了32种鱼类，鉴定了2个分类属和1个分类，并鉴定了174个无脊椎动物分类。水下鱼类最多的是极地鳕（Boreogadus saida），海豚（Lycodes spp。），白令比目鱼（Hippoglossoidesrobustus）和角膜白鳍ock（Theragra chalcogramma）。最丰富的无脊椎动物是有缺口的脆性恒星（Ophiura sarsi），雪蟹（Chionoecetes opilio），贻贝（Musculus spp。）和泥星（Ctenodiscus crispatus）。我们记录或证实了对四种鱼类的已知范围的扩展：角膜白鳕，太平洋鳕鱼（Gadus macrocephalus），喜庆蜗牛鱼（Liparis marmoratus）和眼影杜鹃（Nautichthys pribilo-vius）。我们还记录了商业大小的雪蟹（Chionoecetes opilio）的存在，而北美北极地区以前没有记录到这种雪蟹。

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  • 来源
    《Polar biology》 |2011年第4期|p.475-488|共14页
  • 作者

    Kimberly M. Rand; Elizabeth A. Logerwell;

  • 作者单位

    Resource Ecology and Fisheries Management Division,Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way N.E., Seattle,WA 98115, USA;

    Resource Ecology and Fisheries Management Division,Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way N.E., Seattle,WA 98115, USA;

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  • 正文语种 eng
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  • 关键词

    beaufort sea; marine fishes; snow crab; polar cod; boreogadus saida;

    机译：博福特海海鱼;雪蟹极鳕鱼伯罗加杜斯·赛达;

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