C-bands and NORs on chromosomes of Bembidion lampros (Herbst) and Bembidion properans (Steph.) (Coleoptera, Carabidae)

Rozek, M.

Cytologia (Tokyo) 63(3): 317-321

1998


ISSN/ISBN: 0011-4545
DOI: 10.1508/cytologia.63.317
Accession: 003057824

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Abstract
The C-banding pattern and active nucleolus organizer regions in the karyotype of Bembidion lampros and B. properans are presented. In chromosomes of these species, the constitutive heterochromatin is located in the proximity of the centromeres. In B. properans, the paracentromeric C-bands were similar in size. In B. lampros, a large heterochromatin segment occurred on the 1st pair of autosomes and on the X chromosome, whereas the other autosomes had shorter paracentromeric C-positive blocks of similar size. In the mitotic stages, from the prophase to the prometaphase stage, one silver dot on the end of two autosomes was visible. In prophase I (to diakinesis) one active nucleolus organizer region was observed.