Open AccessNucleolus Organizer Regions in Physalaemus Cuvieri (Anura, Leptodactylidae), with Evidence of a Unique Case of Ag‐NOR Variability
Author(s) -
Silva Ana Paula Zampieri,
Haddad Célio F. B.,
Kasahara Sanae
Publication year - 1999
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1999.00135.x
Subject(s) - biology , leptodactylidae , nucleolus organizer region , karyotype , nucleolus , evolutionary biology , chromosome , anatomy , zoology , genetics , cytoplasm , gene
We studied ten specimens of Physalaemus cuvieri collected at different localities in Brazil using conventional staining and banding techniques. All specimens had 2n = 22. There were karyotypic variants: distinct patterns in the number and chromosome localization of Ag‐NORs as well as in the corresponding secondary constrictions. Preliminary C‐banding patterns obtained for specimens from two localities are also suggestive of karyotypic differentiation in P. cuvieri.