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Artículo

Boundaries of Morphological and Molecular Variation and the Distribution of a Miniaturized Froglet, Brachycephalus nodoterga (Anura: Brachycephalidae)

Clemente Carvalho, Rute B. G.; Perez, Sergio IvanIcon ; Tonhatti, Carlos H.; Condez, Thais H.; Sawaya, Ricardo J.; Haddad, Celio F. B.; Dos Reis, Sergio F.
Fecha de publicación: 03/2016
Editorial: Society for the Study of Amphibians and Reptiles
Revista: Journal of Herpetology
ISSN: 0022-1511
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

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.
Palabras clave: Dna Sequences , Morphometrics , Spatially Discontinuous Distributions , Population Samples
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/54660
DOI: https://dx.doi.org/10.1670/14-119
URL: http://www.bioone.org/doi/10.1670/14-119
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Clemente Carvalho, Rute B. G.; Perez, Sergio Ivan; Tonhatti, Carlos H.; Condez, Thais H.; Sawaya, Ricardo J.; et al.; Boundaries of Morphological and Molecular Variation and the Distribution of a Miniaturized Froglet, Brachycephalus nodoterga (Anura: Brachycephalidae); Society for the Study of Amphibians and Reptiles; Journal of Herpetology; 50; 1; 3-2016; 169-178
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