Ecological divergence among colour morphs mediated by changes in spatial network structure associated with disturbance.

摘要: Summary Differences in individual behaviour affect social interactions and contribute to the spatial structuring of animal populations. However, disturbance should also networks by altering habitat heterogeneity resource availability. Variation availability perturb frequency nature ecological within a population affecting distribution individuals. In disturbed habitats where resources are limiting, relationships reflect behavioural differences among individuals, with higher-quality controlled dominant individuals. In contrast, all individuals may exploit preferred resource-rich habitats. Environmental variation reorganization result morphological, traits, which ultimately fitness. We addressed these considerations for male tree lizards (Urosaurus ornatus) at three sites that differ levels disturbance. The localities differed live trees, microhabitat U. ornatus. addition, U. ornatus exhibits polymorphism dewlap colour linked aggression, influence their position network access resources. We applied framework characterize organization morphs each site quantified aggressive laboratory. compared body size, condition, number bite marks, parasite load use diet, males sites. We detected no significant structure between unburned infrequently burned sites. frequently site, shifted towards geographically closer, heteromorphic neighbour associations. Males this were larger, more had marks but fewer parasites than other Moreover, we divergence diet reflected shift morph behaviour. That is, only usurped trees consumed prey from higher trophic levels. We conclude environmental structure. Jointly, promote despotic dynamics resource-limited