Muscle temperature and swim velocity profiles during diving in a Weddell seal, <i>Leptonychotes weddellii</i>

Citation:
Ponganis, PJ, Kooyman GL, Castellini MA, Ponganis EP, Ponganis KV.  1993.  Muscle temperature and swim velocity profiles during diving in a Weddell seal, Leptonychotes weddellii. Journal of Experimental Biology. 183:341-346.

Date Published:

Oct

Keywords:

blood flow, leptonychotes-weddellii, metabolic rate, seal, thermoregulation

Abstract:

Locomotory muscle temperature and swim velocity profiles of an adult Weddell seal were recorded over a 21 h period. The highest temperatures occurred during a prolonged surface period (mean 37.3-degrees-C, S.D. 0.16-degrees-C). Muscle temperature averaged 36.8 and 36.6-degrees-C (S.D. 0.25-degrees-C, 0.19-degrees-C) during two dive bouts and showed no consistent fluctuations between dive and interdive surface intervals. Swim velocities were also constant, near 1.3 m s-1. These data indicate that past records of low aortic temperatures (35-degrees-C) during and after prolonged dives are not indicative of whole-body temperature changes, and that muscle temperature, even during dives as long as 45 min, remains near 37-degrees-C.

Notes:

n/a

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