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Seri Indian traditional knowledge and molecular biology agree: no express train for island-hopping spiny-tailed iguanas in the Sea of Cortés

2010; Wiley; Volume: 38; Issue: 2 Linguagem: Inglês

10.1111/j.1365-2699.2010.02422.x

1365-2699

Christina M. Davy, Fausto R. Méndez de la Cruz, Amy Lathrop, Robert W. Murphy,

Wildlife Ecology and Conservation

Journal of BiogeographyVolume 38, Issue 2 p. 272-284 Seri Indian traditional knowledge and molecular biology agree: no express train for island-hopping spiny-tailed iguanas in the Sea of Cortés Christina M. Davy, Corresponding Author Christina M. Davy Department of Ecology and Evolutionary Biology, University of Toronto, 25 Wilcocks Street, Toronto, ON M5S 3B2, Canada Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, Canada Christina M. Davy, c/o Department of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, ON M5S 2C6, Canada.E-mail: christina.davy@utoronto.caSearch for more papers by this authorFausto R. Méndez de la Cruz, Fausto R. Méndez de la Cruz Laboratorio de Herpetología, Instituto de Biología, Universidad Nacional Autónoma de México, AP 70-153, CP 04510, México, DF, MexicoSearch for more papers by this authorAmy Lathrop, Amy Lathrop Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, CanadaSearch for more papers by this authorRobert W. Murphy, Robert W. Murphy Department of Ecology and Evolutionary Biology, University of Toronto, 25 Wilcocks Street, Toronto, ON M5S 3B2, Canada Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, Canada State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650223, ChinaSearch for more papers by this author Christina M. Davy, Corresponding Author Christina M. Davy Department of Ecology and Evolutionary Biology, University of Toronto, 25 Wilcocks Street, Toronto, ON M5S 3B2, Canada Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, Canada Christina M. Davy, c/o Department of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, ON M5S 2C6, Canada.E-mail: christina.davy@utoronto.caSearch for more papers by this authorFausto R. Méndez de la Cruz, Fausto R. Méndez de la Cruz Laboratorio de Herpetología, Instituto de Biología, Universidad Nacional Autónoma de México, AP 70-153, CP 04510, México, DF, MexicoSearch for more papers by this authorAmy Lathrop, Amy Lathrop Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, CanadaSearch for more papers by this authorRobert W. Murphy, Robert W. Murphy Department of Ecology and Evolutionary Biology, University of Toronto, 25 Wilcocks Street, Toronto, ON M5S 3B2, Canada Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, Canada State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650223, ChinaSearch for more papers by this author First published: 10 November 2010 https://doi.org/10.1111/j.1365-2699.2010.02422.xCitations: 10Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Aim The role of human activities in species biogeography can be difficult to identify, but in some cases molecular techniques can be used to test hypotheses of human-mediated dispersal. A currently accepted hypothesis states that humans mediated the divergence of two species of spiny-tailed iguanas in the Ctenosaura hemilopha species complex, namely C. conspicuosa and C. nolascensis, which occupy islands in the Sea of Cortés between the peninsula of Baja California and mainland Mexico. We test an alternative hypothesis that follows the traditional knowledge of the Seri Indians and states that the divergence of these species was not mediated by humans. Location Mexico, including Baja California, Sonoran and Sinaloan coastal regions, and Isla San Esteban and Isla San Pedro Nolasco in the Sea of Cortés. Methods We analysed mitochondrial (cytochrome b and cytochrome c oxidase subunit III) DNA sequences from four species in the C. hemilopha species complex. Maximum parsimony and Bayesian inference were used to infer matriarchal genealogical relationships between the species and several outgroup taxa. Bayesian methods were used to estimate divergence times for the major nodes on the trees based on previously published, fossil-calibrated priors. Results Our analysis indicated that lineages within the C. hemilopha species complex diverged long before human colonization of the Americas. The divergence of C. nolascensis and C. conspicuosa could not be attributed to Seri translocations. The matriarchal genealogy of the species complex currently defies a simple biogeographical interpretation. Main conclusions We conclude that humans did not mediate the divergence of C. nolascensis and C. conspicuosa. This conclusion is consistent with the traditional knowledge of the Seri people. These results demonstrate the utility of molecular techniques in investigating potential cases of human-mediated dispersal of plants and animals, and reinforce the importance of considering traditional knowledge in the formation of scientific hypotheses and the interpretation of results. Citing Literature Volume38, Issue2February 2011Pages 272-284 RelatedInformation