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- Title
A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae).
- Authors
ŤÁHLAVSKÝ, FRANTIŠEK Š; OVÁ, JANA CHRISTOPHORY; HENDERICKX, HANS
- 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.
- Subjects
NEOBISIIDAE; PSEUDOSCORPIONS; PLOIDY; KARYOTYPES; ARACHNIDA
- Publication
European Journal of Entomology, 2013, Vol 110, Issue 3, p393
- ISSN
1210-5759
- Publication type
Article
- DOI
10.14411/eje.2013.052