title: B chromosomes, translocation between B and autosomes, and C-heterochromatin polymorphism of the grasshopper Podisma sapporensis Shir. (Orthoptera, Acrididae) in Hokkaido, northern Japan.
abstract: Seven categories of B chromosomes found in the brachypterus grasshopper Podisma sapporensis from Hokkaido populations differ in structure, size, and C-band content. The interchange between B and one autosome from M3 and sporadically M7 was observed in most of the populations examined. Such an interaction between standard and non-standard chromosomal set provides an insight into the integration of supernumerary chromosome. In addition, C-heterochromatin polymorphism was also identified in male karyotypes in some populations. These facts indicate P. sapporensis is a highly polymorphic species from the cytogenetic point of view.
authors.affiliation: Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31-016 Kraków, Poland. warchalowska@isez.pan.krakow.pl
authors.forename: E
authors.initials: E
authors.lastname: Warchałowska-Sliwa
authors.forename: A G
authors.initials: AG
authors.lastname: Bugrov
authors.forename: H
authors.initials: H
authors.lastname: Tatsuta
authors.forename: S
authors.initials: S
authors.lastname: Akimoto
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000235:genetics; D005260:Female; D014644:Genetic Variation; D006110:Grasshoppers / Q000166:cytology / Q000235:genetics* / Q000502:physiology; D006570:Heterochromatin / Q000737:chemistry / Q000235:genetics*; D007564:Japan; D007621:Karyotyping; D008297:Male; D011110:Polymorphism, Genetic / Q000235:genetics*; D014178:Translocation, Genetic
chemical_list: D006570:Heterochromatin