| The polymorphism of 37 enzyme-encoding genes was investigated in a Penaeus japonicus population born the same night from a stock maintained artificially four generations. Five loci were found to be polymorphie (Lap-4, Es-3, Es-6, Es-8 and Mpi-2), and genotype frequencies at four of these loci indicate: a) that the shrimps studied come from the same two parents and b) that Mpi-2 and Es-3 genes are autosomal. The rate of polymorphism observed in this Penaeus japonicus population is similar to that described in natural populations of other Peneidae species, despite the probable occurrence of inbreeding. |
