DIVING BEHAVIOR OF CHINSTRAP PENGUINS AT SEAL-ISLAND

被引：54
作者：
BENGTSON, JL
CROLL, DA
GOEBEL, ME
机构：
[1] National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service/NOAA, Seattle, WA 98115, 7600 Sand Point Way N.E.
来源：
ANTARCTIC SCIENCE | 1993年 / 5卷 / 01期
关键词：
CHINSTRAP PENGUIN; DIVING; FORAGING; SEABIRD; KRILL; ANTARCTICA; SOUTH-SHETLAND-ISLANDS;
D O I：
10.1017/S0954102093000033
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Diving behaviour of chinstrap penguins (Pygoscelis antarctica) was studied in four adults brooding chicks on Seal Island, South Shetland Islands, Antarctica. During foraging trips to sea, chinstrap penguins made shallow, short duration dives almost continuously, for the most part within 50 m of the surface. Diving effort was concentrated during the daylight hours (10h00-15h00), although a second peak in effort was seen around midnight (22h00-02h00). These peaks were possibly due to the constraints of visual location of prey, chick provisioning, or the need to take advantage of diurnal changes in krill swarm densities or behaviour. It was estimated that most effort was concentrated 3-20 km from shore. Dive depth and duration averaged 31.0 m (+/- 26.3 m) and 72 s (+/- 36 s), respectively. Maximum dive depth and duration were 121 m and 180 s, respectively.
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页码：9 / 15
页数：7
相关论文
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