| the relative contribution of drift and selection to phenotypic divergence: a test case using the horseshoe bats rhinolophus simulator and rhinolophus swinnyi. | natural selection and drift can act on populations individually, simultaneously or in tandem and our understanding of phenotypic divergence depends on our ability to recognize the contribution of each. according to the quantitative theory of evolution, if an organism has diversified through neutral evolutionary processes (mutation and drift), variation of phenotypic characteristics between different geographic localities (b) should be directly proportional to the variation within localities (w), ... | 2017 | 28649342 |
| sensory drive mediated by climatic gradients partially explains divergence in acoustic signals in two horseshoe bat species, rhinolophus swinnyi and rhinolophus simulator. | geographic variation can be an indicator of still poorly understood evolutionary processes such as adaptation and drift. sensory systems used in communication play a key role in mate choice and species recognition. habitat-mediated (i.e. adaptive) differences in communication signals may therefore lead to diversification. we investigated geographic variation in echolocation calls of african horseshoe bats, rhinolophus simulator and r. swinnyi in the context of two adaptive hypotheses: 1) james' ... | 2016 | 26815436 |