title: Spermatocyte chromosome analysis of Helicella virgata (Pulmonata: Helicidae): silver-stained and C-banded chromosomes.
abstract: Chromosome numbers of the snail Helicella virgata from the fields of Castellammare del Golfo (Sicily) are n = 26 and 2n = 52. Silver-staining analyses of testicular cells suggest that both mitotic and meiotic chromosomes are involved in nucleolus organization. A within-individual variability in NOR-banding pattern is present in each of the 20 specimens analyzed.
authors.affiliation: Institute of Zoology, University of Palermo, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Vitturi
authors.forename: D
authors.initials: D
authors.lastname: Colombera
authors.forename: E
authors.initials: E
authors.lastname: Catalano
authors.forename: F P
authors.initials: FP
authors.lastname: Amico
mesh_terms: D000818:Animals; D002871:Chromosome Banding; D002875:Chromosomes; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008938:Mitosis; D010078:Oxazines; D012908:Snails / Q000235:genetics*; D013090:Spermatocytes / Q000166:cytology / Q000648:ultrastructure*; D013091:Spermatogenesis; D013194:Staining and Labeling
chemical_list: D010078:Oxazines; C002313:PAcein