The ontogeny of sexual dimorphism in cane toads ( Rhinella marina )

Abstract Determining an individual’s sex early in life may clarify fundamental issues such as progeny sex ratios and sex-based divergences in ecology and behaviour prior to maturity and be useful in captive breeding of endangered species or in developing methods to control invasive pests by skewing offspring sex ratios. We measured morphological traits in captive-raised cane toads (Rhinella marina) at intervals from metamorphosis to more than 2 years of age, at which time we could reliably score