Does aggression and explorative behaviour decrease with lost warning coloration?
Article first published online: 5 NOV 2012
© 2012 The Linnean Society of London
Biological Journal of the Linnean Society
Volume 108, Issue 1, pages 116–126, January 2013
How to Cite
Rudh, A., Breed, M. F. and Qvarnström, A. (2013), Does aggression and explorative behaviour decrease with lost warning coloration?. Biological Journal of the Linnean Society, 108: 116–126. doi: 10.1111/j.1095-8312.2012.02006.x
- Issue published online: 17 DEC 2012
- Article first published online: 5 NOV 2012
- Manuscript Revised: 11 JUL 2012
- Manuscript Accepted: 11 JUL 2012
- Manuscript Received: 20 JUN 2012
- evolutionary innovation;
- Oophaga pumilio;
- population divergence
For prey, many behavioural traits are constrained by the risk of predation. Therefore, shifts between warning and cryptic coloration have been suggested to result in parallel changes in several behaviours. In the present study, we tested whether changes in chromatic contrast among eight populations of the strawberry poison-dart frog, Dendrobates pumilio, co-vary with behaviour, as expected if selection is imposed by predators relying on visual detection of prey. These eight populations are geographically isolated on different island in the Bocas del Toro region of Panama and have recently diverged morphologically and genetically. We found that aggression and explorative behaviour were strongly correlated and also that males tended to be more aggressive and explorative if they belonged to populations with conspicuously coloured individuals. We discuss how evolutionary switches between predator avoidance strategies and associated behavioural divergence between populations may affect reproductive isolation. © 2012 The Linnean Society of London, Biological Journal of the Linnean Society, 2012, ●●, ●●–●●.