title: Cytogenetic studies in two populations of Astyanax altiparanae (Pisces, Characiformes).
authors.affiliation: Department of Cell Biology and Genetics, State University of Maringá, Avenida Colombo 5790, 87020-900 Maringá PR, Brazil. fxande@pop.com.br
authors.forename: Carlos Alexandre
authors.initials: CA
authors.lastname: Fernandes
authors.forename: Isabel Cristina
authors.initials: IC
authors.lastname: Martins-Santos
mesh_terms: D000818:Animals; D005260:Female; D005399:Fishes / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D009697:Nucleolus Organizer Region; D011647:Puerto Rico; D045483:Rivers
chemical_list: D006570:Heterochromatin