Nucleolus organizer regions in Physalaemus cuvievi (Anura, Leptodactylidae), with evidence of a unique case of Ag-NOR variability.
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.
Silva
A P
AP
Departamento de Biologia, Instituto de Biociéncias Universidade Estadual Paulista, UNESP, Brasil.
Haddad
C F
CF
Kasahara
S
S
D000818:Animals; D001001:Anura / Q000235:genetics*; D001938:Brazil; D002874:Chromosome Mapping; D014644:Genetic Variation; D007621:Karyotyping; D008297:Male; D009697:Nucleolus Organizer Region / Q000235:genetics* / Q000648:ultrastructure; D016622:Silver Staining