IRREVERSIBLE NONGENETIC TEMPERATURE ADAPTATION OF OXYGEN UPTAKE IN CLONES OF THE SEA ANEMONE HALIPLANELLA LUCIAE (VERRILL)

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Abstract
Isogenic clones of H. luciae were raised at each of 2 developmental temperatures, 18.degree. and 28.degree. C. Despite prolonged acclimation to common thermal conditions, O2 uptake rates differ according to the temperature of reproduction, regeneration and development. The effects of developmental temperature are masked by body size differences. The irreversible change is not due to an increase in the gas exchange surface area of the tentacles, which are the primary sites of O2 uptake. No qualitative changes in banding patterns for 5 enzymes (hexokinase, phosphoglucose isomerase, isocitrate dehydrogenase, malate dehydrogenase and glucose-6-phosphate-dehydrogenase) were found.