| Texto completo | |
| Autor(es): |
Clemente-Carvalho, R. B. G.
[1]
;
Alves, A. C. R.
[2]
;
Perez, S. I.
[3]
;
Haddad, C. F. B.
[2]
;
dos Reis, S. F.
[4]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Programa Posgrad Genet, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Paulista, Dept Zool, BR-13506900 Sao Paulo - Brazil
[3] Univ Nacl La Plata, CONICET, Div Antropol, Museo La Plata, RA-1900 La Plata - Argentina
[4] Univ Estadual Campinas, Dept Biol Anim, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Herpetology; v. 45, n. 1, p. 94-99, MAR 2011. |
| Citações Web of Science: | 5 |
| Resumo | |
A recent study demonstrated marked variation in cranial shape between a population of Brachycephalus ephippium from Jundiai in Sao Paulo state and populations from Atibaia and Sao Francisco Xavier (Sao Paulo) and Macae de Cima in the state of Rio de Janeiro in southeastern Brazil. This result contrasts with earlier work describing differences in cranial shape between the population from Rio de Janeiro and those from Sao Paulo. Here, we investigate the nature and extent of variation between populations of B. ephippium using two lines of evidence. First, we reevaluate patterns of morphological variation by incorporating semi-landmarks into the quantitative description of cranial shape and by using scanning electron microscopy (SEM) to describe qualitative skeletal features. Second, we assess molecular variation in the mitochondrial genes cytochrome b, 12S rRNA, and 16S rRNA, and the nuclear Rag-1 gene, totaling 3,697 base pairs. Geometric analyses of cranial shape and SEM images of skeletal traits show that the population from Macae de Cima and the populations from Sao Paulo differ markedly in morphology and diverge in the cytochrome b, 12S, and 16S rRNA genes by 9.7%, 2.8%, and 4.4%, respectively. Divergence in the nuclear gene Rag-1 is, as expected, much lower (0.6%). These results clearly demonstrate heterogeneity between populations that are all currently diagnosed as B. ephippium and point to the need for further research to ascertain the true diversity currently hidden under the name of B. ephippium. (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: | 03/12396-4 - Taxonomia, sistemática e evolução de Brachycephalus (Amphibia: Anura: Brachycephalidae) |
| Beneficiário: | Ana Claudia Reis Alves |
| 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 |