Feeding behaviour of free-ranging walruses with notes on apparent dextrality of flipper use.

ABSTRACT:

Background

Direct observations of underwater behaviour of free-living marine mammals are rare. This is particularly true for large and potentially dangerous species such as the walrus (Odobenus rosmarus). Walruses are highly specialised predators on benthic invertebrates - especially bivalves. The unique feeding niche of walruses has led to speculations as to their underwater foraging behaviour. Based on observations of walruses in captivity and signs of predation left on the sea floor by free-living walruses, various types of feeding behaviour have been suggested in the literature. In this study, however, the underwater feeding behaviour of wild adult male Atlantic walruses (O. r. rosmarus) is documented for the first time in their natural habitat by scuba-divers. The video record

SUBMITTER: Levermann N 

PROVIDER: S-EPMC270045 | biostudies-literature | 2003 Oct

REPOSITORIES: biostudies-literature