Data/hora: 09/06/2024 18:30:42

Provedor de dados: | 84
País: | Brazil
Título: | Re-examining the hypothesis of allopatric distribution of Myoprocta acouchy and M. pratti (Mammalia: Dasyproctidae) in South America
Autores: | Ramírez-Chaves,Héctor E.; Suárez-Castro,Andrés F.; Patterson,Bruce D.
Data: | 2014-01-01
Ano: | 2014
Palavras-chave: | Amazonas; Acouchies; Distribution; Hybridization; Sympatry.
Resumo: | Currently, two allopatric species of acouchies, genus Myoprocta (Rodentia: Dasyproctidae) are recognized. Nevertheless, there is morphological variability in the regions where the species are distributed that suggests either sympatry of two (or more) distinct species or else breakdowns in the characters that have been used to diagnose the species. We reviewed specimens of Myoprocta from Colombia and found that both reddish and greenish forms are sympatric in the Amazon basin of the country, including areas adjoining Ecuador and Peru. These records apparently refute the hypothesis of allopatry for these species in South America. However, the results of a principal components analysis showed little or no morphological separation between these two forms. In addition, a review of skulls throughout the geographic range of M. pratti shows high morphological variation. Although sympatry of reddish and greenish acouchies has been suggested for the Amazon region of Ecuador, our review found no evidence of this. In view of our findings, further revisionary work is needed to clarify the status of these forms.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492014003100001
Editor: | Museu de Zoologia da Universidade de São Paulo
Relação: | 10.1590/0031-1049.2014.54.31
Formato: | text/html
Fonte: | Papéis Avulsos de Zoologia  v.54 n.31 2014
Fonte: | info:eu-repo/semantics/openAccess