Display Behavior and Habitat Use in Single and Mixed Populations of Anolis carolinensis and Anolis sagrei Lizards

作者：Edwards Jessica R^*; Lailvaux Simon P

来源：Ethology, 2012, 118(5): 494-502.

DOI：10.1111/j.1439-0310.2012.02037.x

Introduced species can have a variety of effects on the behavior and ecology of native species. We compared display behavior and habitat use of introduced Anolis sagrei and native Anolis carolinensis lizards across three sites in Southern Louisiana. The chosen sites were similar in that they were all located in urban settings with clumped vegetation. The first site contained only A.similar to sagrei, the second supported sympatric A.similar to sagrei and A.similar to carolinensis populations, and the third site harbored only A.similar to carolinensis. We found that (1) A.similar to carolinensis perched significantly higher when A.similar to sagrei was present, consistent with previous studies, whereas perch height of A.similar to sagrei was not altered by the presence of A.similar to carolinensis; (2) A.similar to carolinensis in single and mixed sites exhibited different proportions of display types, with individuals at the mixed Tulane site performing significantly more C displays than those at the single site; and (3) Anolis sagrei at the Tulane mixed site exhibited less push-ups than those in the site with A.similar to sagrei alone. These data suggest that the arrival of congeners can affect display behavior of anoles, although such effects are different for the natives and the invaders.

• 出版日期2012-5