Thermal Plasticity in a Cross-Sexual Transfer Trait : Geographic Variation and Phenotypic Integration of Blue Wing Colour in Female Butterflies
Within-sex phenotypic variation can arise through co-option of sexual differentiation mechanisms. Recently, several such cross-sexual-transfer traits have been identified, but we lack a mechanistic understanding of their geographic variation, environmental influences, and phenotypic integration with other traits. Male Polyommatus icarus butterflies are blue, whereas female wing coloration varies f
