Title
A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae)A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae)
Author
Faculty/Department
Faculty of Sciences. Biology
Research group
Department of Biology - other
Publication type
article
Publication
Subject
Biology
Source (journal)
European journal of entomology / Euromonitor
Volume/pages
110(2013):3, p. 393-399
ISSN
1210-5759
ISI
000321117200001
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
We present the results of the first study on the karyotypes of four European species of Roncus: Roncus alpinus L. Koch, 1873, Roncus lubricus L. Koch, 1873, Roncus transsilvanicus Beier, 1928 and Roncus sp. The diploid number was 2n = 23 in Roncus sp., 2n = 43 in R. alpinus and R. transsilvanicus and 2n = 45 in R. lubricus. Telocentric autosomes predominate in species with a high chromosome number and metacentric autosomes in Roncus sp. We assume that the ancestral situation for this genus is a high number of chromosomes. A low number of chromosomes is very likely a consequence of centric fusions, which have possibly played a very important role in karyotype evolution in the genus Roncus. All the species analyzed have the X0 sex chromosome system. The X chromosome is metacentric and is the smallest element in the karyotypes of all the species analyzed.
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