Record Details

Davy, Christina M;Méndez de la Cruz, Fausto R;Lathrop, Amy;Murphy, Robert W
Seri Indian traditional knowledge and molecular biology agree: no express train for island-hopping spiny-tailed iguanas in the Sea of Cortés
Journal of Biogeography
Journal Article
Ctenosaura pectinata;Iguana iguana;Sauromalus ater;Sauromalus varius;Ctenosaura macrolopha;Ctenosaura nolascensis;Ctenosaura conspicuosa;Ctenosaura hemilopha
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 Cortes 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.