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- Publisher
- Wiley
- Copyright
- Copyright © 2006 Wiley Subscription Services, Inc., A Wiley Company
- ISSN
- 0175-8659
- eISSN
- 1439-0426
- DOI
- 10.1111/j.1439-0426.2006.00759.x
- Publisher site
- See Article on Publisher Site
Abstract
Summary Artificial spawning (reproduction), a popular method in fisheries, has caused the unintentional hybridization between native European whitefish (Coregonus lavaretus) and introduced peled (Coregonus peled). The resultant hybrids are fertile and their morphological identification is impossible. The study shows the genetic characteristics of the hybrid coregonid fish specimens. Analyses of the number and morphology of chromosomes were based on conventional Giemsa staining. Nucleolar Organiser Regions (NOR) were analysed using CMA3‐ and Ag‐NOR staining. Metaphases were also investigated by C‐banding methods. Hybrid specimens had a diploid chromosome number (2n) ranging from 76 to 80 and an arm chromosome number ranging from 96 to 100. NORs were observed on the subtelo‐acrocentric and submeta‐metacentric chromosomes. Results of the present study indicate a high level of chromosomal differentiation due to rearrangement taking place in the gene pool of whitefish/peled hybrids.
Journal
Journal of Applied Ichthyology – Wiley
Published: Oct 1, 2006