Melanic through nature or nurture: genetic polymorphism and phenotypic plasticity in Harmonia axyridis.

Abstract excerpt

Individuals can adapt to heterogeneity in their environment through either local adaptation or phenotypic plasticity. Colour forms of the ladybird Harmonia axyridis are a classic example of local adaptation, in which the frequency of melanic forms varies greatly between populations. In some populations, there are also large seasonal changes in allele frequency, with melanism being costly in summer and beneficial...

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