Genetic make up of exotic catfish Clarias gariepinus in India

Twelve enzymes were assayed in Clarias gariepinus collected from India and Thailand. Genetic variation was observed at eight loci, viz EST-1* and 2*, AAT*, ODH*, MDH* GPI* L, GPI-1*M and HK*. Observed heterozygosities were found to be 0.149 and 0.152 , and percent polymorphism 50% and 31.25% respectively in samples from India and Thailand. The results indicate that C. gariepinus in India could be the mix of different stocks belonging to diferrent genetic lineages.