Krill-feeding behaviour of gentoo penguins as shown by animal-borne camera loggers

被引：35

作者：

Takahashi, Akinori ^{[1
,2
]}

Kokubun, Nobuo ^{[2
]}

Mori, Yoshihisa ^{[3
]}

Shin, Hyoung-Chul ^{[4
]}

机构：

[1] Natl Inst Polar Res, Itabashi Ku, Tokyo 1738515, Japan

[2] Grad Univ Adv Studies, Dept Polar Sci, Itabashi Ku, Tokyo 1738515, Japan

[3] Teikyo Univ Technol & Sci, Dept Anim Sci, Yamanashi 4090193, Japan

[4] KORDI, Korea Polar Res Inst, Inchon 406840, South Korea

来源：

POLAR BIOLOGY | 2008年 / 31卷 / 10期

基金：

日本学术振兴会;

关键词：

Antarctica; benthic diving; diving behaviour; foraging strategy; Pygoscelis papua; seabirds;

D O I：

10.1007/s00300-008-0502-4

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

Animal-borne camera loggers were used to examine the patterns of prey encounter and feeding behaviour of gentoo penguins at King George Island, Antarctica. The still images from the camera loggers showed that the penguins encountered the swarms of krill for 25.5% (range: 8-38%) of their dives (> 5 m) on average, during their foraging trips (mean duration of 5.4 h, n = 7 trips). They encountered krill swarms during the dives to 10-70 m depth, in pelagic as well as benthic habitats. In the benthic habitat, the penguins swam just above the sea floor and headed downward over a krill swarm, probably using the sea floor to assist them to feed on mobile swarms. The shallow coastal waters would be the important foraging habitat of gentoo penguins breeding in King George Island.

引用

页码：1291 / 1294

页数：4

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