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首页> 外文期刊>Marine biology >Energy expenditure and food consumption of foraging Imperial cormorants in Patagonia, Argentina
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Energy expenditure and food consumption of foraging Imperial cormorants in Patagonia, Argentina

机译：阿根廷巴塔哥尼亚觅食帝王cor的能源消耗和食物消耗

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摘要

Energy management during the breeding season is crucial for central place foragers since parents need to feed themselves and their offspring while being spatially and temporally constrained. In this work, we used overall dynamic body acceleration as a measure of activity and also to allude to the foraging energy expenditure of breeding Imperial cormorants Phalacrocorax atriceps. We also analyzed how changes in the time or energy allocated to different activities affected the foraging trip energy expenditure and estimated the daily food requirements of the species. Birds spent 42 % of the total energy flying to and from the feeding areas and 16 % floating at sea. The level of activity underwater was almost 1.5 times higher for females than for males. The most expensive diving phase in terms of rate of energy expenditure was descending though the water column. The total foraging trip energy expenditure was particularly sensitive to variation in the amount of time spent flying. During the breeding season, adult cormorants breeding along the Patagonian coast would consume approximately 10,000 tons of food.
机译：繁殖季节期间的能量管理对于中心觅食者至关重要，因为父母需要在空间和时间上受到约束的同时养活自己和他们的后代。在这项工作中，我们使用整体动态身体加速度作为活动的度量，还暗示了繁殖帝王Imperial Atriceps的觅食能量消耗。我们还分析了分配给不同活动的时间或能量的变化如何影响觅食旅行的能量消耗，并估计了该物种的日常食物需求。鸟类花费了总能量的42％往返于进食区，而16％则漂浮在海上。女性的水下活动水平几乎是男性的1.5倍。就能量消耗率而言，最昂贵的潜水阶段是通过水柱下降。觅食旅行的总能量消耗对飞行时间的变化特别敏感。在繁殖季节，沿巴塔哥尼亚海岸繁殖的成年cor将消耗约10,000吨食物。

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  • 来源
    《Marine biology》 |2013年第7期|1697-1707|共11页
  • 作者

    Agustina Gomez-Laich; Rory P. Wilson; Emily L. C. Shepard; Flavio Quintana;

  • 作者单位

    Centre Nacional Patagonico-CONICET, Boulevard Brown 2915,Puerto Madryn (U9120ACD), Chubut, Argentina;

    Biological Sciences, Institute of Environmental Sustainability,University of Wales, Swansea SA2 8PP, UK;

    Biological Sciences, Institute of Environmental Sustainability,University of Wales, Swansea SA2 8PP, UK;

    Centre Nacional Patagonico-CONICET, Boulevard Brown 2915,Puerto Madryn (U9120ACD), Chubut, Argentina Wildlife Conservation Society, Amenabar 1595, (C1426AKC),Ciudad de Buenos Aires, Argentina;

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