A comparative biochemical genetic study of three populations of domesticated and wild African catfish (Clarias gariepinus)

1. 1. Gene products of 22 protein coding loci in two commercially used (domesticated) and one wild population of African catfish, Clarias gariepinus, were examined by horizontal starch-gel and vertical polyacrylamide-gel electrophoresis. 2. 2. Average heterozygosities of 0.0759 and 0.0033 for the domesticated and 0.0467 for the wild catfish population were calculated. 3. 3. Genetic distances indicated a greater similarity between geographically isolated (hatchery) populations than between hatchery and wild populations. 4. 4. Selection of breeding stock for aquaculture practices based on the above information is discussed. © 1992.