Cytogenetic study of Leptodactylus fuscus and L. latrans (Anura: Leptodactylidae) from the semiarid Brazilian Caatinga scrublands. Frogs in the family Leptodactylidae have diploid chromosome numbers ranging from 2n = 18 to 2n = 26, although there is a predominance of 2n = 22 karyotypes. In the present study, 52 specimens of Leptodactylus fuscus and Leptodactylus latrans were obtained from three municipalities (Carira, Poço Redondo, and Tobias Barreto) of the Brazilian state of Sergipe for karyotype analysis using conventional Giemsa staining techniques, and C-and Ag-NOR banding of the chromosomes obtained from the intestinal epithelium. The results of this study show that the individuals analyzed have highly similar karyotypes, with no evidence of any pronounced species-specific markers. However, some differences were observed in the chromosome morphology and C-bands in comparison with the karyotypes described previously for these species, which may represent intraspecific geographic variation in both taxa.Keywords: amphibians, chromosomes, C-bands, Ag-NOR. 126Phyllomedusa -12(2), December 2013 Resumo Análise citogenética de Leptodactylus fuscus e L. latrans (Anura: Leptodactylidae) de áreas de Caatinga do Brasil. A família Leptodactylidae apresenta números diplóides que variam de 2n = 18 a 2n = 26, porém, na maioria dos gêneros descritos na literatura, há uma predominância de cariótipos com 2n = 22. Neste trabalho foram analisados citogeneticamente 52 exemplares de Leptodactylus fuscus e Leptodactylus latrans coletados pela primeira vez no estado de Sergipe, norte do Brasil, nos municípios de Carira, Poço Redondo e Tobias Barreto, por meio de técnicas de coloração convencional, Banda C e Ag-RON, empregadas em preparações do epitélio intestinal. Os dados mostraram que as espécies aqui analisadas apresentaram padrões cariotípicos muito similares, sem evidência de marcadores específicos das espécies. Contudo, algumas variações de morfologia cromossômica e bandas C observadas divergiram de cariótipos já descritos na literatura e podem indicar diferenças cromossômicas geográficas intraespecíficas para ambas as espécies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.