Literaturdatenbank
Literaturdatenbank |
|
 |
|
Thompson, C. W., Moore, I. T., & Moore, M. C. (1993). Social, environmental and genetic factors in the ontogeny of phenotypic differentiation in a lizard with alternative male reproductive strategies. Behavioral Ecology and Sociobiology, 33(3), 137–146.
Added by: Sarina Wunderlich (06 Jul 2014 16:17:25 UTC) |
| Resource type: Journal Article DOI: 10.1007/BF00216593 BibTeX citation key: Thompson1993a View all bibliographic details  |
Categories: General Keywords: Echsen - saurians, Fortpflanzung - reproduction, Pelodiscus sinensis, Physiologie - physiology, Sehvermögen - vision, Trionychidae, Verhalten - ethology Creators: Moore, Moore, Thompson Collection: Behavioral Ecology and Sociobiology |
Views: 6/832
Views index: 22% Popularity index: 5.5% |
| Abstract |
|
Summary Adult male tree lizards, Urosaurus ornatus, practise alternative (territorial or sneaker/satellite) reproductive strategies that are correlated with differences in throat color and body size. In this study we raised tree lizards from hatching in the laboratory to examine the question of whether the phenotypic expression of secondary sex coloration and body size can be facultatively influenced by social or abiotic environmental factors. We compared males reared in the laboratory under different social and environmental conditions to males in the field and found no effect of different conditions on phenotypic differentiation (Figs. 2- 4). Thus, phenotypic differences between morphs probably result largely from nonfacultative expression of different genotypes. This suggests that alternative male morphs practise a mixed evolutionary stable strategy (ESS) rather than one morph making the best of a bad situation. However, in the context of ESS theory it is difficult to explain our further result that the nonterritorial morph in this species grows faster and reaches a larger adult body size than the territorial morph (Fig. 5).
Added by: Sarina Wunderlich |