Molecular evidence for an Asian origin of monitor lizards followed by Tertiary dispersals to Africa and Australasia
| Autor: | Freek J. Vonk, Arnaud Couloux, Bryan G. Fry, Julie Marin, S. Blair Hedges, Alison J. Fitch, Fabia U. Battistuzzi, Nicolas Vidal, Ricardo C. Rodríguez de la Vega, Julia Sassi, Steve Donnellan |
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| Rok vydání: | 2012 |
| Předmět: |
Asian origin
Time Factors Old World Biogeography Zoology Molecular evidence Evolution Molecular Species Specificity biology.animal Animals Varanidae Phylogeny Likelihood Functions Australasia Geography biology Computational Biology Vertebrate Bayes Theorem Lizards biology.organism_classification Biological Evolution Agricultural and Biological Sciences (miscellaneous) Africa Biological dispersal General Agricultural and Biological Sciences Cenozoic Software |
| Zdroj: | Biology Letters. 8:853-855 |
| ISSN: | 1744-957X 1744-9561 |
| Popis: | Monitor lizards are emblematic reptiles that are widely distributed in the Old World. Although relatively well studied in vertebrate research, their biogeographic history is still controversial. We constructed a molecular dataset for 54 anguimorph species, including representatives of all families with detailed sampling of the Varanidae (38 species). Our results are consistent with an Asian origin of the Varanidae followed by a dispersal to Africa 41 (49–33) Ma, possibly via an Iranian route. Another major event was the dispersal of monitors to Australia in the Late Eocene–Oligocene 32 (39–26) Ma. This divergence estimate adds to the suggestion that Australia was colonized by several squamate lineages prior to the collision of the Australian plate with the Asian plate starting 25 Ma. |
| Databáze: | OpenAIRE |
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