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Free Content Use of the Chromosomal Co-location of the Minor 5S and the Major 28S rDNA as a Cytogenetic Marker within the Genus Leuciscus (Pisces, Cyprinidae)

The chromosomes of three species from the genus Leuciscus (the ide L. idus, the European chub L. cephalus and the common dace L. leuciscus) were examined with the FISH technique for 5S and 28S rDNA probes. The analysis showed that among the three examined species, 5S rDNA signals were located on two large and four small subtelocentric chromosomes in L. leuciscus, on one large and five small subtelocentric chromosomes in L. idus, while in L. cephalus the probe signals were found on two metacentric chromosomes and one large and one small subtelocentric chromosome pairs. In all analysed species, the 28S rDNA probe signals were placed on only one chromosome pair, subtelocentric in the common dace and the European chub, and submetacentric in the ide. The three species differed in the number of sites in which both probe signals were present. In conclusion, the co-location of the 5S and 28S rDNA proved to be a useful cytogenetic marker among the studied fishes. Moreover, this marker could be adapted to other cyprinids.


Document Type: Research Article

Publication date: 2010

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  • Folia Biologica (Kraków) is an international online open access journal accepting original scientific articles on various aspects of zoology: evolution, ecology, genetic diversity, and experimental zoology.

    Publication in Folia Biologica (Kraków) is free of charge, the language of publication is English, and all papers are subject to peer reviews.

    Indexed by Journal Citation Reports (JCR) including Impact Factor (IF), Scopus, IC Journals Master List, and Polish Ministry of Science and Higher Education (currently awarded 100 points).

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