ISSN:
1573-6857
Keywords:
karyology
;
banded chromosomes
;
Coleoptera
;
darkling beetles
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract We have studied mitotic and meiotic chromosomes in the males of two species of Blaps: B. gigas and B. gibba. Karyological characteristics such as the occurrence of a multivalent configuration at diakinesis and two types of metaphase-II spreads support the notion that multiple-chromosome sex systems involving five chromosomes in B. gigas and eight chromosomes in B. gibba have developed in these species. Results obtained by means of silver staining and C-banding techniques suggest that the complex sex systems occurring in B. gigas and B. gibba may have originated from exchanges of terminal ribosomal genes among the Y chromosome and some autosomes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00054629
Permalink