Artículos de revistas
Chromosomal Differentiation Of Hyla Nana And Hyla Sanborni (anura, Hylidae) With A Description Of Nor Polymorphism In H. Nana
Registro en:
Journal Of Heredity. , v. 94, n. 2, p. 149 - 154, 2003.
221503
10.1093/jhered/esg019
2-s2.0-0038515407
Autor
Medeiros L.R.
Rossa-Feres D.C.
Recco-Pimentel S.M.
Institución
Resumen
Specimens of Hyla nana and Hyla sanborni from a syntopic population were studied cytogenetically. These species are morphologically very similar and are frequently misidentified, confused with each other. Both species had a diploid chromosome number, 2n = 30. However, the karyotypes of H. nana and H. sanborni differed considerably from each other in the number of submetacentric and telocentric chromosomes. The two species also differed in their primary NOR-bearing chromosomes (metacentric pair 13 in H. nana and telocentric pair 12 in H. sanborm). Additional nucleolus organizer regions (NORs) were detected by Ag-NOR staining and FISH in chromosome pairs 1, 5, 6, 12, and 14 in seven specimens of H. nana. Thus, a total of six patterns of NOR were identified. These differences in karyotype and in NOR location allowed the unambiguous identification of syntopic individuals of the two species. 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