Temperature-mediated plasticity in egg and body size in egg size-selected lines of a butterfly

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• 作者：Klaus Fischer ; Stephanie S. Bauerfeind and Konrad Fiedler
• 关键词：Acclimation ; Artificial selection ; Bicyclus anynana ; Developmental plasticity ; Genotype– ; environment interaction ; Offspring size ; Phenotypic plasticity ; Pupal mass ; Reaction norm ; Temperature– ; size rule
• 刊名：Journal of Thermal Biology
• 出版年：2006
• 出版时间：May 2006
• 年：2006
• 卷：31
• 期：4
• 页码：347-354
• 全文大小：172 K

文摘

We examine genotype–environment interactions by using lines of the butterfly Bicyclus anynana artificially selected for differences in egg size in a full factorial design with two developmental and two oviposition temperatures. In accordance with the temperature–size rule, egg size and pupal mass increased by 4–5 and 8 % , respectively, at lower temperatures. Genotype–environment interactions for both traits suggest that plasticity is largely independent of the trait value, and that there is potential for evolutionary change. These findings cast further doubt on the notion that temperature-mediated plasticity might be purely a physiological constraint.