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Biol Bull 124: 277-284. (June 1963)
© 1963 Marine Biological Laboratory
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ENVIRONMENTAL AND TISSUE TEMPERATURES OF SOME TROPICAL INTERTIDAL MARINE ANIMALS

JOHN B. LEWIS 1

1 Bellairs Research Institute of McGill University, St. James, Barbados, W.I.

1. Body temperatures of three common intertidal animals were measured with fine wire thermocouples.

2. Body temperatures were observed to be considerably above ambient air temperatures on a hot sunny day.

3. The difference between body temperatures and ambient air temperatures was less marked on a cloudy day.

4. Evaporative cooling was apparently the mechanism for lowering body temperatures. This process was most effective in the gastropod, Nerita.

5. A relationship between ability to regulate body temperature by evaporation and intertidal zonation is suggested.






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Copyright © 1963 by the Marine Biological Laboratory.