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首页> 外文期刊>Polar biology >Polar bear cubs may reduce chilling from icy water by sitting on mother's back
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Polar bear cubs may reduce chilling from icy water by sitting on mother's back

机译：北极熊幼崽坐在母亲的背上可以减少冰冷引起的寒冷

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摘要

The principal habitat of polar bears Ursus maritimus is sea ice where they hunt seals. Much of the sea ice habitat is scattered or with leads of open water. Adults are good swimmers. They are well adapted to cold water, while small cubs do not yet have fat layer sufficient to avoid chilling if swimming in icy water for any prolonged period of time. An important question is thus how female mothers and their cubs may behave to avoid that cubs get chilled, but at the same time making it possible for the families to hunt is those areas. We describe an observation of a polar bear cub on its mother's back while the mother was swimming among ice floes in Svalbard, Norwegian Arctic. Similar observations are to our knowledge not earlier described in the scientific literature. We point out that this behaviour minimize exposure to cold water and hence significantly may reduce chilling of the cub. It may also be a way for the mother to transfer cubs not yet able or willing to swim. The behaviour may be necessary to allow the families to get around in areas of sea ice with many open leads.
机译：北极熊Ursus maritimus的主要栖息地是海冰，它们在那里捕食海豹。许多海冰栖息地分散或有开阔水域。成人是优秀的游泳者。它们非常适合冷水，而小崽的脂肪层还不足以在冰冷的水中长时间游泳时避免寒冷。因此，一个重要的问题是雌性母亲及其幼崽如何行为以防止幼崽变冷，但与此同时，这些家庭也有可能去狩猎。当母亲在挪威北极的斯瓦尔巴特群岛的浮冰间游泳时，我们描述了一只北极熊在母亲背上的观察。就我们所知，类似的观察结果是科学文献中没有更早描述的。我们指出，这种行为可以最大程度地减少对冷水的接触，因此可以大大减少幼崽的寒冷。这也可能是母亲转移尚未或不愿意游泳的幼崽的一种方式。这种行为可能是必要的，以便允许家人在有许多裸露引线的海冰区域中四处走动。

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  • 来源
    《Polar biology》 |2010年第4期|557-559|共3页
  • 作者

    Jon Aars; Angela Plumb;

  • 作者单位

    Norwegian Polar Institute, Polar Environmental Centre, 9296 Tromso, Norway;

    Norwegian Polar Institute, Polar Environmental Centre, 9296 Tromso, Norway;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    polar bears; swimming; body temperature;

    机译：北极熊;游泳的;体温;

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