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.
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
Maria
M
Rozek
Dorota
D
Lachowska
D000818:Animals; D002871:Chromosome Banding; D001517:Coleoptera / Q000235:genetics*; D006570:Heterochromatin; D007621:Karyotyping; D014998:Y Chromosome / Q000235:genetics
D006570:Heterochromatin