Genetic variability of fishes in the family Caprinidae as evaluated by genetic polymorphism of blood proteins
2001
Trakovicka, A. | Kubek, A. | Zitny, J. | Strapakova, E. | Stranai, I. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
Based on genetic polymorphism of blood proteins, genetic varability was studied of 5 fish species in the family Czprinidae: carp (Cyprinus carpio), tench (Tinca tinca), bream (Abrains brama), chub (Leuciscus cephalus) and barbel (Barbus barbus). In the blood of all tested species was detected a genetic polymorphism of transferrin, albumine, prealbumine1, prealbumine2, malatdehydrogenase and carbonic anhydrase. Within the systems of cerulopasmine and amylase, the tested species were found to be monomorphous. The highest level of polymorphism was observed in the loci of transferrin in all tested species. In particular, the carp had a number of effective alleles of 4.2571. The populations of bream (Abramis brama), tench (Tinca tinca) and barbel (Barbus barbus) showed lower heterozygosity (0.3642-0.3964) and higher level of inbreeding population (0.0324-0.1348). It has been confirmed there is a significant genetic distance between species due to differencies in the level of polymorphness of loci and total genetic variability. The highest genetic distance (2.1584) was between barbel and tench. Relatively the highest genetic simmilarity was detected between the populations of carp and bream, with the index of genetic similarity of 0.6829
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