Reference : Genetic structure of nase, Chondrostoma nasus, and common barbel, Barbus barbus (Tele...
Scientific congresses and symposiums : Poster
Life sciences : Genetics & genetic processes
http://hdl.handle.net/2268/178001
Genetic structure of nase, Chondrostoma nasus, and common barbel, Barbus barbus (Teleostei, Cyprinidae) populations in South Belgium rivers: toward a rational management of conservation restocking
English
Gennotte, Vincent mailto [Université de Liège - ULiège > > Centre de formation et de recherche en aquaculture (CEFRA) >]
Michaux, Johan mailto [Université de Liège - ULiège > Département des sciences de la vie > Génétique et physiologie des microalgues >]
Prignon, Christian mailto [Université de Liège - ULiège > > Centre de formation et de recherche en aquaculture (CEFRA) >]
Ovidio, Michaël mailto [Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Laboratoire de Démographie des poissons et hydroécologie >]
Mélard, Charles mailto [Université de Liège - ULiège > > Centre de formation et de recherche en aquaculture (CEFRA) >]
Dec-2014
No
International
21st Benelux Congress of Zoology
12 et 13 décembre 2014
Liège
Belgium
[en] Barnus barbus ; Chondrostoma nasus ; barbel ; nase ; Conservation genetics
[en] Nase (Chondrostoma nasus) and common barbel (Barbus barbus) are two rheophilic cyprinid fish naturally present in the Belgian Meuse and Rhine basins. During the last decades, the construction of dams together with changes in hydrological regimes, modifications of riverbed morphology and water pollution have caused some local dramatic declines in their populations. However, recent improvements in terms of water quality and habitat fragmentation allow considering as realistic a rational restocking plan of locally endangered patrimonial fish species such as nase and common barbel. Restocking operations for a conservation purpose have to be based on the knowledge and the use of wild type genetic strains. Therefore, the aim of this study was to characterize the genetic structure and diversity of nase and common barbel populations in South Belgium rivers. Wild common barbels (n = 313) and nases (n = 271) were sampled by electrofishing in respectively 10 and 6 different tributaries from the Meuse and Rhine rivers. Genotyping was performed on 24 microsatellite markers for each species. Preliminary results showed, for both species, a differential genetic clustering between fish originating from the Meuse basin and those originating from the Rhine basin. Detailed analysis describing the genetic structure and diversity of South Belgium populations will be presented and will serve as a management tool to set up a breeding plan for conservation restocking.
http://hdl.handle.net/2268/178001

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