title: Cytogenetic analysis of Scinaxauratus and Scinaxeurydice (Anura, Hylidae) with emphasis on cytotaxonomy.
abstract: Scinax Wagler, 1830 is a species-rich genus of amphibians with relatively few detailed chromosomal reports. In this work, cytogenetic analyses of Scinaxauratus (Wied-Neuwied, 1821) and Scinaxeurydice (Bokermann, 1968) were carried out based on conventional (Giemsa staining, Ag-NOR and C-banding) and cytomolecular (base-specific fluorochrome staining and fluorescence in situ hybridization - FISH of ribosomal probes) techniques. Both species shared the same karyotype, location of active nucleolar organizer regions on pair 11 and GC-rich heterochromatin, as reported for most species in Scinaxruber clade. Interpopulation chromosomal variation was observed in Scinaxeurydice, indicating the occurrence of cryptic species. The mapping of 18S ribosomal genes by FISH is reported for the first time in both species.
authors.affiliation: Instituto de Estudos Costeiros, Universidade Federal do Pará, Alameda Leandro Ribeiro s/n, Aldeia, Bragança, PA, CEP 68600-000.
authors.forename: Lídia
authors.initials: L
authors.lastname: Nogueira
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Rua José Moreira Sobrinho, s/n - Jequiezinho, Jequié - BA CEP: 45200-000.
authors.forename: Fabilene
authors.initials: F
authors.lastname: Paim
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Rua José Moreira Sobrinho, s/n - Jequiezinho, Jequié - BA CEP: 45200-000.
authors.forename: Débora
authors.initials: D
authors.lastname: Diniz
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Ilhéus/Itabuna, km 16, Ilhéus, Bahia, 45662-000, Brazil.
authors.forename: Mirco
authors.initials: M
authors.lastname: Solé
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Rua José Moreira Sobrinho, s/n - Jequiezinho, Jequié - BA CEP: 45200-000.
authors.forename: Paulo
authors.initials: P
authors.lastname: Affonso
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Rua José Moreira Sobrinho, s/n - Jequiezinho, Jequié - BA CEP: 45200-000.
authors.forename: Sérgio
authors.initials: S
authors.lastname: Siqueira
authors.affiliation: Instituto de Estudos Costeiros, Universidade Federal do Pará, Alameda Leandro Ribeiro s/n, Aldeia, Bragança, PA, CEP 68600-000.
authors.forename: Iracilda
authors.initials: I
authors.lastname: Sampaio
keywords: Amphibians; FISH; chromosomes; heterochromatin