The historical biogeography of the southern group of the sucker genus Moxostoma (Teleostei: Catostomidae) and the colonization of central Mexico |
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Authors: | Rodolfo Pérez‐Rodríguez Omar Domínguez‐Domínguez Adan Fernando Mar‐Silva Ignacio Doadrio Gerardo Pérez‐Ponce de León |
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Affiliation: | 1. Instituto de Ecología Aplicada, UAT, División del Golfo 356, Col. Libertad, Ciudad Victoria, Tamaulipas, México;2. Laboratorio de Biología Acuática, Facultad de Biología, UMSNH, Morelia, Michoacán, México;3. Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Madrid, Espa?a, México;4. Departamento de Zoología, Instituto de Biología, UNAM, México, D.F., México |
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Abstract: | The historical biogeography of the southern group of Moxostoma Rafinesque, 1820, a genus of Nearctic freshwater fishes belonging to the Catostomidae, along its entire distribution in North America was inferred to: (1) determine the biogeographical events responsible for its current pattern of diversity and distribution; (2) correlate the climatic and geologic history of the region with the biogeographical pattern observed; and (3) trace the colonization route into central Mexico and the western Pacific slope drainages. The sequences of mitochondrial cytochrome b and the third intron of the growth hormone were obtained for the members of the southern group and related species of the Catostomidae. Phylogenetic analyses and relaxed molecular clock analyses were performed to determine the relatedness of the species and to estimate divergence times. To uncover biogeographical patterns, a dispersal–extinction–cladogenesis (DEC) analysis was conducted. The phylogenetic analyses were consistent with the historical hydrographic scenario in the region. The divergence times show that the southern group evolved during the Pliocene–Pleistocene. The DEC analyses showed that vicariance and dispersal played an important role in the current distribution patterns of the lineages in central Mexico, and allow us to trace an independent route of colonization from the northern areas of North America into central Mexico. |
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Keywords: | cytochrome  b DEC analysis dispersal ability growth hormone hydrographic configuration molecular clock range extension vicariance |
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