Cytogenetics of Bisexual/Unisexual Species of Poecilia: II. Analysis of Heterochromatin and Nucleolar Organizer Regions in Poecilia Mexicana Mexicana by C-Banding and DAPI, Quinaerine, Chromomycin a₃, and Silver Staining

Creator(s)

Luciana Sola, Università degli Studi di Roma La Sapienza
A. R. Rossi, Università degli Studi di Roma La Sapienza
V. Iasclli, Università degli Studi di Roma La Sapienza
E. M. Rasch, East Tennessee State University
P. J. Monaco, East Tennessee State UniversityFollow

Document Type

Article

Publication Date

1-1-1992

Description

Chromosomes of Poecilia mexicana mexicana, one of the bisexual species involved in the hybrid origin of the unisexual teleost fish species P. formosa, were analysed by several staining techniques. Sex-specific, differential heterochromatin, found in other congeneric species, was not observed in P. m. mexicana. Nucleolar organizer regions were polymorphic among individual specimens within a given population sample. A single specimen exhibiting intraindividual variability of chromosome pair 1 and a specimen with a triploid karyotype are also described.

Citation Information

Sola, Luciana; Rossi, A. R.; Iasclli, V.; Rasch, E. M.; and Monaco, P. J.. 1992. Cytogenetics of Bisexual/Unisexual Species of Poecilia: II. Analysis of Heterochromatin and Nucleolar Organizer Regions in Poecilia Mexicana Mexicana by C-Banding and DAPI, Quinaerine, Chromomycin a₃, and Silver Staining. Cytogenetic and Genome Research. Vol.60(3-4). 229-235. https://doi.org/10.1159/000133346 PMID: 1380417 ISSN: 1424-8581