Data/hora: 08/06/2024 17:25:39

Provedor de dados: | 74
País: | Brazil
Título: | Cytogenetics of two hylid frogs from Brazilian Cerrado
Autores: | Targueta,Cíntia Pelegrineti; Guerra,Vinícius; Gambale,Priscilla Guedes; Bastos,Rogério Pereira; Silva,Daniela de Melo e; Telles,Mariana Pires de Campos.
Data: | 2018-12-01
Ano: | 2018
Palavras-chave: | Anura; Karyotype; Ololygon; Scinax.
Resumo: | Abstract Cytogenetic data can be useful for taxonomic and phylogenetic studies, as well as to provide information about chromosome evolution. Therefore, it may help design conservation priorities for some threatened species, such as anurans. Herein, we describe the karyotypes of Scinax constrictus and Ololygon centralis, native endemic species from the Brazilian Cerrado. Chromosome preparations for both species were stained with Giemsa for morphological analyses and then impregnated by the Ag-NOR method for localization of the nucleolar organizer region (NOR). Both species had 24 chromosomes, as confirmed by meiotic analyses, which showed 12 bivalents. Chromosome morphologies presented the same pattern for Scinax and Ololygon compared to species already karyotyped in both genera. The NOR was interstitially located in the long arm of pair 7 in S. constrictus, whereas in O. centralis it was found near the centromere in the long arm of pair 1, thus diverging from what is commonly found for other Ololygon species. Therefore, we provide the first description of the karyotype of O. centralis and the first report of the localization of the NOR for the karyotype of both species. Our study increases the cytogenetic knowledge in species of the genera Scinax and Ololygon, and provide support for further studies on the taxonomy, ecology, and evolution of hylid anurans.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500814
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/1678-4685-gmb-2017-0382
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.41 n.4 2018
Fonte: | info:eu-repo/semantics/openAccess