title: Karyotypes of Bembidion quadrimaculatum (L.) and Clivina fossor (L.) (Coleoptera: Carabidae).
abstract: Bembidion quadrimaculatum possesses 24 chromosomes: 2n male = 22 + XY, 2n female = 22 + XX; their structure is meta- and submetacentric and differences in length between them are slight. Achiasmatic meiosis has been identified in spermatogenesis. The diploid chromosome number in Clivina fossor is 44; 2n male = 42 + XY, 2n female = 42 + XX. The chromosome structure is meta-, submeta-, and subtelocentric and X is the longest element in the set. 1 to 2 chiasmata per bivalent occur in meiosis.
authors.forename: M
authors.initials: M
authors.lastname: Roźek
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000648:ultrastructure*; D001517:Coleoptera / Q000235:genetics*; D005260:Female; D007621:Karyotyping; D008297:Male