First documentation of leopard seal predation of South Georgia pintail duck

Ewan W. J. Edwards; Jaume Forcada; Glenn T. Crossin

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First documentation of leopard seal predation of South Georgia pintail duck

机译：南佐治亚长尾鸭豹海豹捕食的第一个文献

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Leopard seals are regular winter visitors to Bird Island, South Georgia, where they mostly prey on fur seals and penguins, and to a lesser extent on Antarctic krill and fish. Leopard seals can exploit many different species, but there are no records of predation on flying shorebirds in the wild. On 4 October 2008, an individually identified juvenile leopard seal female was observed killing and eating a South Georgia Pintail duck. It also preyed on Antarctic fur seals and gentoo and macaroni penguins during its 2-month temporary residency around the island. The varied diet of this seal exemplifies the generalist prey utilization typical of its species. Long-term diet studies at Bird Island and the published record suggest that predation on ducks is a rather exceptional finding; individual ducks are more likely to escape leopard seal attacks than penguins and provide a far less substantial ration. This note documents the first observation of this species of duck in the diet of leopard seals.

机译：豹海豹是冬季经常到访南乔治亚州伯德岛的游客，他们主要捕食海豹和企鹅，在较小程度上捕食南极磷虾和鱼类。豹海豹可以利用许多不同的物种，但是在野外飞行的水鸟没有捕食记录。 2008年10月4日，观察到一只个体识别的幼豹海豹杀死并吃掉了一只乔治亚州南部的野鸭。在岛上为期两个月的临时居住期间，它还捕食了南极海狗，金头和通心粉企鹅。这种海豹的饮食结构多样化，体现了该物种典型的通才猎物利用。伯德岛的长期饮食研究和已发表的记录表明，对鸭的捕食是一个相当特殊的发现。个别鸭子比企鹅更有可能逃脱豹海豹袭击，并提供少得多的定量。本说明记录了在豹海豹的饮食中对这种鸭的首次观察。

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来源
《Polar biology》 |2010年第3期|403-405|共3页
作者
Ewan W. J. Edwards; Jaume Forcada; Glenn T. Crossin;
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作者单位

British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK;

British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK;

Centre for Ecology and Hydrology, Monks Wood, Abbots Ripton, Huntingdon PE28 2LS, UK;

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原文格式 PDF
正文语种 eng
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关键词
leopard seal; pintail duck; predation; South Georgia;

机译：豹海豹鸭尾鸭掠夺南乔治亚;

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First documentation of leopard seal predation of South Georgia pintail duck

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