![]() We used differences between values measured after these short acclimation periods as a measure of the scope of phenotypic flexibility. After winter acclimation, hamsters were lighter, had lower whole animal BMR, higher fNST than in summer, and developed heterothermy. We conclude that seasonal acclimation affects hamster responses to intra-seasonal variations in the thermal environment.Īfter these short acclimations to the above-mentioned temperatures, hamsters showed reversible changes in BMR and fNST however, these traits were less flexible in winter than in summer. ![]() We argue that understanding seasonal changes in phenotypic flexibility is crucial for predicting the biological consequences of global climate changes. ![]() The phenotype is a product of genotype, environment and the interaction between them (Lynch and Walsh 1998). ![]()
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