Sister-Species Diverge in Modality-Specific Courtship Signal Form and Function

Eileen Hebets, Rowan McGinley, Mitch Bern, Andrew Roberts, Arik Kershenbaum, James Starrett & Jason Bond
Understanding the relative importance of different sources of selection (e.g. the environment, social/sexual selection) on the divergence or convergence of reproductive communication can shed light on the origin, maintenance, or even disappearance of species boundaries. Using a multi-step approach, we tested the hypothesis that two presumed sister-species of wolf spider with overlapping ranges and microhabitat use, yet differing degrees of sexual dimorphism, have diverged in their reliance on modality-specific courtship signaling. We predicted that male...
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