Local adaptation in adult feeding preference and juvenile performance in the generalist herbivore Idotea balthica.

Abstract excerpt

Populations can respond to environmental heterogeneity by genetic adaptation to local conditions. Evidence for local adaptation in herbivores with relatively broad host breadth is scarce, either because generalists rarely locally adapt or because fewer studies have tested for local adaptation. The marine isopod Idotea balthica, a small (<3 cm) generalist herbivore common to estuaries of the northwestern Atlantic,...

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