Diet composition and trophic levels of marine mammals

被引:482
作者
Pauly, D [1 ]
Trites, AW
Capuli, E
Christensen, V
机构
[1] Univ British Columbia, Fisheries Ctr, Vancouver, BC V6T 1Z4, Canada
[2] Int Ctr Living Aquat Resources Management, Manila, Philippines
关键词
marine mammals; diets; trophic levels;
D O I
10.1006/jmsc.1997.0280
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Standardized diet compositions were derived for 97 species of marine mammals from published accounts of stomach contents as well as from morphological, behavioural and other information. Diet was apportioned among eight categories of prey types (benthic invertebrates, large zooplankton, small squids, large squids, small pelagic fishes, mesopelagic fishes, miscellaneous fishes and higher invertebrates). Trophic levels were estimated for each species of marine mammals and compared with published estimates derived using stable isotope ratios. Trophic levels ranged from 3.2-3.4 in baleen whales and sea otters, to 3.8-4.4 in most pinnipeds and odontocete whales, to 4.5-4.6 in killer whales. Such information can be used for ecosystem modelling and related studies. (C) 1998 International Council for the Exploration of the Sea.
引用
收藏
页码:467 / 481
页数:15
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