title: Karyotype study on pseudoscorpions of the genus Lasiochernes Beier (Pseudoscorpiones, Chernetidae).
abstract: Karyotypes of the genus Lasiochernes (Pseudoscorpiones, Chernetidae) are studied for the first time. The diploid chromosome numbers of males were found to be 2n = 61 in L. pilosus, 2n = 69 in L. siculus and 2n = 73 in L. cretonatus. Karyotypes of all species mainly consist of biarmed chromosomes; the sex chromosome system is XO. Remarkably, the X chromosome displays partial (L. cretonatus), or even total (L. pilosus), negative heteropycnosis during the spermatogonial metaphase.
authors.affiliation: Department of Zoology, Faculty of Sciences, Charles University, Vinicná 7, CZ-128 44 Prague 2, Czech Republic. stahlf@natur.cuni.cz
authors.forename: Frantisek
authors.initials: F
authors.lastname: Stáhlavský
authors.forename: Hans
authors.initials: H
authors.lastname: Henderickx
authors.forename: Jirí
authors.initials: J
authors.lastname: Král
mesh_terms: D000818:Animals; D007621:Karyotyping; D012605:Scorpions / Q000235:genetics*