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Title
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A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae)
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Author
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Abstract
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| 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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Language
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English
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Source (journal)
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European journal of entomology / Euromonitor
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Publication
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2013
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ISSN
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1210-5759
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DOI
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10.14411/EJE.2013.052
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Volume/pages
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110
:3
(2013)
, p. 393-399
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ISI
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000321117200001
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Full text (Publisher's DOI)
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