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Title: The karyotype of three Brazilian Terrarana frogs (Amphibia, Anura) with evidence of a new Barycholos species
Authors: Siqueira, Sérgio
Aguiar Junior, Odair [UNIFESP]
Pansonato, André
Giaretta, Ariovaldo A.
Strüssmann, Christine
Martins, Itamar
Recco-pimentel, Shirlei M.
Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal de Mato Grosso
Universidade Federal de Uberlândia Instituto de Biologia Departamento de Biociências
Universidade Federal de Mato Grosso Departamento de Ciências Básicas e Produção Animal
Universidade de Taubaté Departamento de BiologiaAnimal
Keywords: cytogenetics
Issue Date: 1-Jan-2009
Publisher: Sociedade Brasileira de Genética
Citation: Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 32, n. 3, p. 470-476, 2009.
Abstract: 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.
ISSN: 1415-4757
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