title: Patterns of chromosome banding in four nabid species (Heteroptera, Cimicomorpha, Nabidae) with high chromosome number karyotypes.
abstract: Male Nabis (Aspilaspis) indicus (Stål), N. (A.) viridulus Spinola, Himacerus (Himacerus) mirmicoides (O. Costa) (2n=32+XY) and Prostemma guttula (Fabricius) (2n=26+XY) were studied using C-banding, silver nitrate staining and base-specific fluorochrome (DAPI and CMA(3)) staining. N. indicus differed from N. viridulus in distribution pattern of C-bands, which were telomeric in the former while interstitial in the latter. H. mirmicoides showed interstitial C-bands in the majority of autosomes. P. guttula had no conspicuous C-bands in other chromosomes, but only in the Y, which was totally heterochromatic. C-heterochromatin was labelled with DAPI, indicating that it was AT-rich. In every species, both X and Y chromosomes were NOR-bearing, and the NOR regions were GC-rich. In H.mirmicoides and P. guttula, NORs showed sub-median location in the X and distal in the Y, such a pattern being probably common in Nabidae. The present paper provides new information on the genome organization and new cytological markers useful for a better insight into karyotype evolution of nabid species.
authors.affiliation: Institute of Zoology, Bulgarian Academy of Sciences, Sofia, Bulgaria. grozeva@yahoo.com
authors.forename: S
authors.initials: S
authors.lastname: Grozeva
authors.forename: V G
authors.initials: VG
authors.lastname: Kuznetsova
authors.forename: S
authors.initials: S
authors.lastname: Nokkala
mesh_terms: D000818:Animals; D002871:Chromosome Banding; D002875:Chromosomes / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics*; D020062:Heteroptera / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008938:Mitosis; D013045:Species Specificity
chemical_list: D006570:Heterochromatin