Sexual size dimorphism and ecomorphology of the Berthold’s bush anole (Polychrus gutturosus) in Costa Rica: Preliminary data

Abstract

Sexual size dimorphism (SSD) is the result of sexual or natural selection operating differently on the body sizes of females and males. Males of most lizard species are larger than females, suggesting intrasexual selection on male’s body size to be more aggressive or territorial. However, some species exhibit female-biased SSD, suggesting that selection operates on female fecundity.