Body size but not warning signal luminance influences predation risk in recently metamorphosed poison frogs.

ABSTRACT: During early development, many aposematic species have bright and conspicuous warning appearance, but have yet to acquire chemical defenses, a phenotypic state which presumably makes them vulnerable to predation. Body size and signal luminance in particular are known to be sensitive to variation in early nutrition. However, the relative importance of these traits as determinants of predation risk in juveniles is not known. To address this question, we utilized computer-assisted design (CAD) and information on putative predator visual sensitivities to produce artificial models of postmetamorphic froglets that varied in terms of body size and signal luminance. We then deployed the artificial models in the field and measured rates of attack by birds and unknown predators. Our results indicate

SUBMITTER: Flores EE 

PROVIDER: S-EPMC4670055 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature