Authors
Krystal A Tolley, Ted M Townsend, Miguel Vences
Publication date
2013/5/22
Journal
Proceedings of the Royal Society B: Biological Sciences
Volume
280
Issue
1759
Pages
20130184
Publisher
The Royal Society
Description
Oceanic dispersal has emerged as an important factor contributing to biogeographic patterns in numerous taxa. Chameleons are a clear example of this, as they are primarily found in Africa and Madagascar, but the age of the family is post-Gondwanan break-up. A Malagasy origin for the family has been suggested, yet this hypothesis has not been tested using modern biogeographic methods with a dated phylogeny. To examine competing hypotheses of African and Malagasy origins, we generated a dated phylogeny using between six and 13 genetic markers, for up to 174 taxa representing greater than 90 per cent of all named species. Using three different ancestral-state reconstruction methods (Bayesian and likelihood approaches), we show that the family most probably originated in Africa, with two separate oceanic dispersals to Madagascar during the Palaeocene and the Oligocene, when prevailing oceanic …
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Scholar articles
KA Tolley, TM Townsend, M Vences - Proceedings of the Royal Society B: Biological …, 2013