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首页> 外文期刊>Polar biology >Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)
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Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)

机译：南乔治亚（南洋）南极星空溜冰鞋Amblyraja georgiana（Rajidae，Chondrichthyes）的饮食

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摘要

Stomach contents were identified from 206 Antarctic starry skate (Amblyraja georgiana) that were collected during three groundfish surveys (September 2007, April 2008 and January 2009) at South Georgia, Southern Ocean. The diet of A. georgiana varied with skate size and between years. Preferred prey included fish (particularly for larger individuals) and Antarctic krill, Euphausia superba, as well as amphipods, polychaetes and other benthic fauna. The skate A. georgiana appears to be an opportunistic predator, and the clear presence of Antarctic krill in this demersal predator's diet may indicate a benthic habit of this euphausiid species, which has hitherto mainly been considered as occupying a purely pelagic niche.
机译：从206种南极星空滑冰（Amblyraja georgiana）中识别出胃中的内容，这些滑冰是在南大洋洲南乔治亚州进行的三个底栖鱼类调查（2007年9月，2008年4月和2009年1月）中收集的。乔治亚安娜的饮食随溜冰鞋大小和年份的不同而不同。首选的猎物包括鱼类（尤其是较大的个体）和南极磷虾，欧洲磷虾（Euphausia superba）以及两栖类，多毛类和其他底栖动物。格鲁吉亚溜冰鞋似乎是一种机会主义的捕食者，在这种海底捕食者的饮食中明显存在南极磷虾，这可能表明该磷虾的底栖习性，迄今主要被认为是一种纯粹的浮游生物。

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  • 来源
    《Polar biology》 |2011年第3期|p.389-396|共8页
  • 作者

    Charlotte E. Main; Martin A. Collins;

  • 作者单位

    British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road,Cambridge CB3 OET, UK,National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton SO 14 3ZH, UK;

    British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road,Cambridge CB3 OET, UK,Government of South Georgia and the South Sandwich Islands Government House, Stanley, Falkland Islands FIQQ 1ZZ, UK;

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  • 正文语种 eng
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  • 关键词

    feeding ecology; rajidae; elasmobranch; chondrichthyes; euphausia superba; krill;

    机译：喂养生态;j科弹性分支软骨鱼南极磷虾磷虾;

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