The Giant river catfish, Sperata seenghala (Sykes) is commercially very important fish species of South Asia. Genetic variability between its populations collected from two rivers i.e. river Sutlej and river Beas of Indus river system in India were examined using randomly amplified polymorphic DNA analysis. Total 38 fish samples were collected from river Sutlej whereas 46 fish samples were collected from river Beas. Total 40 primers were screened, out of these 7 were selected for studying polymorphism which produced a total of 64 RAPD loci in two populations. Percentage polymorphic loci calculated following 95% criterion was 89.06 % for Beas population as compared to 95.31 % for Sutlej population. Moderate level of genetic divergence (genetic distance of 0.0486) between both the populations suggests distinct population substructure of giant river catfish in both the rivers.
Russian Journal of Genetics – Springer Journals
Published: Aug 17, 2010
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