Swimming velocities in otariids

Citation:
Ponganis, PJ, Ponganis EP, Ponganis KV, Kooyman GL, Gentry RL, Trillmich F.  1990.  Swimming velocities in otariids. Canadian Journal of Zoology-Revue Canadienne De Zoologie. 68:2105-2112.

Date Published:

Oct

Abstract:

Velocities during surface swimming and diving were measured with microprocessor recorders in four otariid species: northern fur seals (Callorhinusursinus), Galapagos sea lions (Zalophuscalifornianuswollebaeki), Galapagos fur seals (Arctocephalusgalapagoensis), and Hooker's sea lions (Phocarctoshookeri). Mean surface swimming velocities ranged from 0.6 to 1.9 m/s. Transit distances to feeding sites (1.2–90 km) were calculated using these velocities. Dive velocities, recorded every 15 s, ranged from 0.9 to 1.9 m/s. These velocities were consistent with calculated minimal cost of transport velocities in the smaller species. Using time partitioning, the metabolic cost of a northern fur seal foraging trip is estimated on the basis of recorded velocities and their calculated energy costs. This value is within 6% of that previously made with doubly labeled water techniques.

Notes:

n/a

Website

DOI:

10.1139/z90-293