Abstract
Effect of seasonal and experimental acclimation to temperature upon aquatic oxygen consumption of the sea anemone Actinia equina L. has been studied in animals from two shore levels during the summer of 1981 and the winter of 1982. A clear influence of both season and shore level on the weight exponent is registered, higher values occurring during the summer. Seasonally acclimated animals from the upper shore showed perfect winter-summer compensation with lateral translation to the right of the R-T curve in response to warm acclimation while this pattern was coupled with clockwise rotation and partial compensation in specimens collected from the low shore. Experimental acclimation during the summer resulted in partial compensation at T a 15°C and no acclimation was found at T a 25°C; during the winter, only high shore specimens exhibited compensatory responses. A significant increase in oxygen consumption, regardless of shore level, occurs in winter in both seasonally and experimentally acclimated animals.
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