Unexpected phylogenetic relationships of the painted tree rat Callistomys pictus (Rodentia: Echimyidae)

Autores/as

  • Ana Carolina Loss Universidade Federal do Espírito Santo
  • Raquel T Moura Universidade Federal de Minas Gerais
  • Yuri Luiz R Leite Universidade Federal do Espírito Santo

Resumen

Callistomys pictus is an arboreal echimyid rodent, and the only living species in this genus. It is endemic to a very small Atlantic Forest region in the state of Bahia, east Brazil. Here we used DNA sequences from 4 genes to infer the phylogenetic position of Callistomys within Echimyidae. The results show that Callistomys forms a clade with the semi-aquatic coypu (Myocastor) from the grasslands in the southern South America and terrestrial spiny rats (Proechimys)from the Amazon forest, but the relationships among these three genera are uncertain. This clade is sister to Thrichomys, a terrestrial rat from the dry lands of central South America. These clades are unexpected, given the contrasting morphology, ecology, and geographic ranges of its members. The resulting echimyid phylogeny indicates that Callistomys is not closely related to the other arboreal echimyids, and suggest that arboreal habits evolved more than once in this family.

Palabras clave:

Atlantic Forest, endemism, evolution, molecular phylogeny

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Biografía del autor/a

Ana Carolina Loss, Universidade Federal do Espírito Santo

Post-graduate Program in Biological Sciences (Animal Biology). Universidade Federal do Espírito Santo (PPGBAN / UFES).

Raquel T Moura, Universidade Federal de Minas Gerais

Post-graduate Program in Ecology, Conservation and Wildlife Management. Universidade Federal de Minas Gerais (UFMG).

Yuri Luiz R Leite, Universidade Federal do Espírito Santo

Post-graduate Program in Biological Sciences (Animal Biology). Universidade Federal do Espírito Santo (PPGBAN / UFES).

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Vol. 12 Núm. 3 (2014)

Publicado:

2014-05-05

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Cómo citar

Loss, A. C., Moura, R. T., & Leite, Y. L. R. (2014). Unexpected phylogenetic relationships of the painted tree rat Callistomys pictus (Rodentia: Echimyidae). Natureza Online, 12(3), 132–136. Recuperado a partir de https://naturezaonline.com.br/revista/article/view/209

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