C-banded chromosomes of the genus Bembidion Latr. (Coleoptera, Carabidae).
The C-banding pattern of Bembidion punctulatum, B. varium, B. varicolor, B. ascedens, B. tibiale, B. ustulatum, B. decorum, and B. modestum are presented. All examined species have a symmetrical karyotype with meta- and submentacentric chromosomes and meioformula n=11+XY. All of them have an achiasmatic spermatogenesis in common. The present data confirm earlier studies indicating a considerable morphological and numerical stability of the Bembidiini karyotype. The C-banding showed the existence of heterochromatin in the paracentric regions of chromosomes, and also 2-3 intercalar C-positive segments were observed. The Y chromosome is entrely euchromatic. The C-banded karyotype of the analysed species in genus Bembidion has large heterochromatin segments on chromosomes, an exception in Coleoptera.
Rozek
Maria
M
Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31-016 Kraków, Poland. rozek@isez.pan.krakow.pl
Lachowska
Dorota
D
D000818:Animals; D002871:Chromosome Banding; D001517:Coleoptera / Q000235:genetics*; D006570:Heterochromatin; D007621:Karyotyping; D014998:Y Chromosome / Q000235:genetics
D006570:Heterochromatin