Karyotypic characterization and constitutive heterochromatin in the grasshopper Stiphra robusta (Orthoptera proscopiidae).
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.
de Souza
M J
MJ
Departamento de Genética, Universidade Federal de Pernambuco, Brasil.
de Moura
R de C
Rde C
D000818:Animals; D005260:Female; D006110:Grasshoppers / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics*; D007621:Karyotyping; D008297:Male
D006570:Heterochromatin