Ecology and evolution of sexual dimorphism in newts

I am conducting experiments and population surveys to test hypotheses on the role of resource competition in both the expression and evolution of differences between the sexes. Theory suggests that competition will play a large role both the expression of sexually selected traits and in the evolution of sexual dimorphism in general. I use redspotted newts (Notophthalmus viridescens) as a model system. Newts exhibit both striking sexually-selected traits (e.g., male tail height) as well as more subtle ecologically-relevant sexual dimorphism, and are also somewhat remarkable in the range of habitats they have successfully colonized, from large lakes occupied by pelagic fish to small temporary ponds

Principal Investigator: Locke Rowe

Researcher: Stephen De Lisle

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