Summer foods of Atlantic walrus, Odobenus rosmarus rosmarus, in northern Foxe Basin, Northwest Territories

Autor:	R. E. A. Stewart, K. I. Fisher
Rok vydání:	1997
Předmět:	Fishery Mya truncata Polychaete biology Benthic zone Animal Science and Zoology Hiatella arctica Structural basin biology.organism_classification Nereis Ecology Evolution Behavior and Systematics Predation Invertebrate
Zdroj:	Canadian Journal of Zoology. 75:1166-1175
ISSN:	1480-3283 0008-4301
DOI:	10.1139/z97-139
Popis:	Stomach contents of Atlantic walrus, Odobenus rosmarus rosmarus, taken by Inuit hunters in northern Foxe Basin in July 1987 and 1988 (n = 105) and September 1988 (n = 2) were examined. In July, 20 of 94 stomachs from immature and adult walrus contained > 5 g of food representing 17 prey taxa, including bivalves, gastropods, holothurians, polychaetes, and brachiopods. The bivalve Mya truncata contributed 81.4% of the total gross energy in the diet, with the bivalve Hiatella arctica, holothurians, and the polychaete Nereis sp. contributing 7.5, 3.5, and 2.8%, respectively. The diets of male and female walrus were similar except that females received a significantly (P
Databáze:	OpenAIRE
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