Movements of southern elephant seals

被引:101
作者
McConnell, BJ
Fedak, MA
机构
[1] Sea Mammal Research Unit, Natural Environment Research Council, Cambridge CB3 0ET, Madingley Road
来源
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE | 1996年 / 74卷 / 08期
关键词
D O I
10.1139/z96-163
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Twelve southern elephant seals (Mirounga leonina) were tracked for an average of 119 days as they left their breeding or moulting beaches on the island of South Georgia between 1990 and 1994. Females travelled either eastward up to 3000 km away to the open Southern Ocean or to the continental shelf on or near the Antarctic Peninsula. Males either stayed close to South Georgia or used South Georgia as a base for shorter trips. The females all left South Georgia in a directed manner at an average rate of 79.4 km/day over at least the first 15 days. Thereafter travel was interrupted by bouts of slower travel or stationary phases. The latter were localized at sites on the continental shelf or along its edge. Three seals that were tracked over more than one season repeated their outward direction of travel and used some of the same sites in subsequent years. The magnitude of the movements makes most of the Southern Ocean potentially available to elephant seals.
引用
收藏
页码:1485 / 1496
页数:12
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