Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/326113
Type: Artigo
Title: Boundaries Of Morphological And Molecular Variation And The Distribution Of A Miniaturized Froglet, Brachycephalus Nodoterga (anura: Brachycephalidae)
Boundaries of morphological and molecular variation and the distribution of a miniaturized froglet, brachycephalus nodoterga (anura: brachycephalidae)
Author: Clemente-Carvalho, Ruth B. G.
Perez, Sergio I.
Tonhatti, Carlos H.
Condez, Thais H.
Sawaya, Ricardo J.
Haddad, Celio F. B.
Reis, Sergio F. dos
Abstract: Most miniaturized froglets of the genus Brachycephalus occur in isolation in slopes of mountain ranges at elevations varying from 600 to 1,800 m in the Atlantic Forest of eastern Brazil. For organisms such as Bracycephalus with spatially discontinuous distributions, a fundamental task is to determine whether observed patterns of variation are consistent with geographic differentiation among allopatric populations within a single species or are suggestive of a potential species boundary. We address this problem by focusing on continental and island population samples potentially assignable to Brachycephalus nodoterga (Anura: Brachycephalidae) from the perspective of variation in qualitative and quantitative morphological traits and DNA sequences. Population samples from continental and island populations share color characteristics, qualitative traits, and multivariate patterns of variation and covariation in cranial metric traits. Comparative analysis of DNA sequences showed the magnitude of molecular distances between B. nodoterga and Brachycephalus ephippium to be 1 order of magnitude larger than molecular distances within B. nodoterga and B. ephippium. We interpret the combined morphological and molecular evidence to indicate that continental and island population samples examined here are conspecific. Therefore, by defining species boundaries for B. nodoterga, we also established minimal estimates of its distribution.
Most miniaturized froglets of the genus Brachycephalus occur in isolation in slopes of mountain ranges at elevations varying from 600 to 1,800 m in the Atlantic Forest of eastern Brazil. For organisms such as Bracycephalus with spatially discontinuous dis
Subject: Anuro
Variação morfológica
Variação genética
Genética de populações
Biogeografia
Country: Estados Unidos
Editor: Society for the study of amphibians and reptiles
Citation: Journal Of Herpetology. Soc Study Amphibians Reptiles, v. 50, p. 169 - 178, 2016.
Rights: Fechado
Identifier DOI: 10.1670/14-119
Address: https://bioone.org/journals/journal-of-herpetology/volume-50/issue-1/14-119/Boundaries-of-Morphological-and-Molecular-Variation-and-the-Distribution-of/10.1670/14-119.full
Date Issue: 2016
Appears in Collections:IB - Artigos e Outros Documentos

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