Abstract
Standard morphometries and body surface areas were determined for 56 captive phocid seals. The mean Meeh constant, describing the relationship between maximum surface area (Amax) and body mass raised to the power 2/3 (m0.67), was 0.088 ± 0.011 m2∙kg−0.67. This value was not significantly different (P < 0.05) from the mean Meeh constant for 13 species of marine mammals (0.090 ± 0.018 m2∙kg−0.67), nor was it significantly different from the Meeh constants calculated for two samples of terrestrial mammals (0.097 ± 0.019 (N = 57) and 0.10 ± 0.013 m2∙kg−0.67 (N = 21)). The empirical allometric relationship between body mass and surface area for our phocid seals was log Amax = log 0.14 + 0.51 log m (R2 = 0.84). This relationship was not significantly different from that calculated for cetaceans, but was, however, significantly different from that calculated for terrestrial mammals. On average, surface areas of marine mammals (including pinnipeds, cetaceans, and the sea otter) were 23% smaller for their mass than those of terrestrial mammals.
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