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

Autor(es)

Clemente-Carvalho, Rute B. G. ^[1] ; Perez, Sergio I. ^[2] ; Tonhatti, Carlos H. ^[3] ; Condez, Thais H. ^[4] ; Sawaya, Ricardo J. ^[5] ; Haddad, Celio F. B. ^[6] ; dos Reis, Sergio F. ^[7]

Afiliação do(s) autor(es)

^[1] Univ Vila Velha, Programa Posgrad Ecol Ecossistemas, BR-29102920 Vila Velha, ES - Brazil

^[2] Univ Nacl La Plata, CONICET, Fac Ciencias Nat & Museo, Div Antropol, Paseo Bosque S-N, RA-1900 La Plata, Buenos Aires - Argentina

^[3] Univ Estadual Campinas, Programa Posgrad Genet, BR-13083970 Campinas, SP - Brazil

^[4] Univ Estadual Paulista, Programa Posgrad Zool, BR-13506900 Rio Claro, SP - Brazil

^[5] Univ Fed Sao Paulo, Dept Ciencias Biol, Campus Diadema, Rua Prof Artur Riedel 275, BR-09972270 Diadema, SP - Brazil

^[6] Univ Estadual Paulista, Dept Zool, BR-13506900 Rio Claro, SP - Brazil

^[7] Univ Estadual Campinas, Dept Biol Anim, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Herpetology; v. 50, n. 1, p. 169-178, MAR 2016.
• Citações Web of Science: 4

Resumo

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. (AU)

• Processo FAPESP: 05/55449-6 - Taxonomia, sistemática e evolução do gênero Brachycephalus (Amphibia: Brachycephalidae): perspectivas morfológicas e moleculares
• Beneficiário: Sérgio Furtado dos Reis
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/10230-8 - Variação morfológica e molecular em populações de Brachycephalus (Anura: Brachycephalidae)
• Beneficiário: Rute Beatriz Garcia Clemente Carvalho
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 08/50928-1 - Especiação de anfíbios anuros em ambientes de altitude
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 08/54472-2 - Diversidade, distribuição e conservação da herpetofauna do estado de São Paulo
• Beneficiário: Ricardo Jannini Sawaya
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores