, 67:51 | Cite as

Localisation of NORs and counterstain-enhanced fluorescence studies inPerca fluviatilis (Pisces, Percidae)

  • B. Mayr
  • P. Rab
  • M. Kalat


The karyotype of the perch (Percafluviatilis L.) was analysed by means of silver-staining, the chromomyc in A/3 Distamycin A/DAPI and Actinomycin D fluorescence technique in order to locate active NORs and to selectively highlight certain heterochromatic regions. The ribosomal RNA genes are localized at the secondary constrictions of the short arms of chromosomes no. 16. Additionally, bright chromomycin fluorescence was observed in the same regions. No DAPI/ Distamycin A bright heterochromatic block was detected in the perch karyotype.


DAPI Actinomycin Fluorescence Technique Heterochromatic Region Fluorescence Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Dr W. Junk Publishers, Dordrecht 1985

Authors and Affiliations

  • B. Mayr
    • 1
  • P. Rab
    • 3
  • M. Kalat
    • 2
  1. 1.Veterinary UniversityInstitute for Animal Breeding and GeneticsViennaAustria
  2. 2.Veterinary UniversityLudwig Boltzmann Institute for Immuno- and Cytogenetic ResearchViennaAustria
  3. 3.Institute of Animal Physiology and Genetics, Department of GeneticsCzechoslovak Academy of SciencesLibechovCzechoslovakia

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