title: Karyotypic characterization and constitutive heterochromatin in the grasshopper Stiphra robusta (Orthoptera proscopiidae).
abstract: Conventional analysis, C-banding, silver nitrate and base specific fluorochrome staining with chromomycin A3 (CMA3) were used to analyse the meiotic chromosomes of the grasshopper Stiphra robusta. Diploid numbers of 2n = 19 in the males and 2n = 20 in the females were observed. The chromosome complement comprised a graded series of uniarmed chromosomes, and the X chromosome was medium sized. The nucleolar organizer regions, restricted to the bivalent chromosomes 6, 7 and 8, were CMA3 positive.
authors.affiliation: Departamento de Genética, Universidade Federal de Pernambuco, Brasil.
authors.forename: M J
authors.initials: MJ
authors.lastname: de Souza
authors.forename: R de C
authors.initials: Rde C
authors.lastname: de Moura
mesh_terms: D000818:Animals; D005260:Female; D006110:Grasshoppers / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics*; D007621:Karyotyping; D008297:Male
chemical_list: D006570:Heterochromatin