The post-moult diet of Emperor Penguins (Aptenodytes forsteri) in the eastern Weddell Sea, Antarctica
The post-moult diet of Emperor Penguins (Aptenodytes forsteri) in the eastern Weddell Sea, Antarctica
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南极洲威德尔海东部的帝企鹅 (Aptenodytes forsteri) 换毛后的饮食
DOI：
10.1007/bf00237459
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发表时间：
1995
期刊：
影响因子：
1.7
通讯作者：
K. Pütz
中科院分区：
文献类型：
--
作者：
K. Pütz
对南极洲威德尔海东部德累舍尔湾的帝企鹅Aptenodytes forsteri在夏末的食性进行了研究。南极磷虾Euphausia Superba是这种食物的主要成分，占所有猎物的75%。帝企鹅似乎在快速的海冰下浅潜时以磷虾为食。按猎物数量计算，鱼类占所有猎物的不到20%，主要是鹦鹉科鱼类。然而，根据质量对主要猎物类型的评估表明，鱼约占猎物质量的75%。在圈养的企鹅身上进行的喂养实验表明，乌贼的喙可以在胃内累积长达3周，没有任何明显的侵蚀迹象。样本中没有头足类软体动物的部分，这使得所有的乌贼喙很可能都是从以前捕获的动物中提取的。乌贼似乎是德累舍尔湾帝企鹅的一种非常次要的食物成分。
The diet of emperor penguins Aptenodytes forsteri was studied during late austral summer at Drescher Inlet, eastern Weddell Sea, Antarctica. Antarctic krill Euphausia superba was a major component of the food, accounting for 75% of all prey items. Emperor penguins appear to feed on krill during shallow dives under the fast sea ice. Fish, mainly nototheniids, accounted for less than 20% by number of all prey. An evaluation of the main prey types in terms of mass indicated, however, that fish represented up to 75% approximately of prey mass. Feeding experiments were performed on captive penguins and showed that squid beaks can accumulate for up to 3 weeks within the stomach without any clear signs of erosion. The lack of cephalopod soft parts in the samples makes it likely that all squid beaks were derived from animals captured some time previously. Squid seems to be a very minor dietary component of emperor penguins at the Drescher Inlet.