Data/hora: 16/06/2024 17:42:42

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | The karyotype of three Brazilian Terrarana frogs (Amphibia, Anura) with evidence of a new Barycholos species
Autores: | Siqueira,Sérgio; Aguiar Jr.,Odair; Pansonato,André; Giaretta,Ariovaldo A.; Strüssmann,Christine; Martins,Itamar; Recco-Pimentel,Shirlei M.
Data: | 2009-01-01
Ano: | 2009
Palavras-chave: | Cytogenetics; Barycholos; Ischnocnema; Pristimantis; Ag-NOR; C-banding.
Resumo: | A recent substantial rearrangement of the 882 described eleutherodactyline frog species has considerably improved the understanding of their systematics. Nevertheless, many taxonomic aspects of the South American eleutherodactyline species remain unknown and require further investigation using morphological, cytogenetic and molecular approaches. In this work, the karyotypes of the Brazilian species Ischnocnema juipoca (Atibaia and Campos do Jordão, SP), Barycholos cf. ternetzi (Uberlândia, MG, and Porto Nacional, TO), and Pristimantis crepitans (Chapada dos Guimarães and São Vicente, MT) were analyzed using Giemsa staining, Ag-NOR labeling, and C-banding techniques. All individuals had a diploid number of 22 chromosomes, but the Fundamental Numbers were different among species. The herein described low chromosome number of Pristimantis crepitans is unique within this genus, suggesting that cytogenetically this species is not closely related either to its congeneric species or to Ischnocnema. In addition, karyotype differences, mainly in the NOR position, clearly distinguished the two Barycholos populations, besides indicating the existence of a so far undescribed species in this genus. A taxonomic review could clarify the systematic position of P. crepitans and verify the hypothetic new Barycholos species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300008
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572009005000044
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.32 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess