Genetic Structure of Cultured Haliotis Diversicolor Supertexta (Reeve) Populations‪.‬

ABSTRACT Genetic structure of four cultured Haliotis diversicolor supertexta populations were investigated using the assay of vertical slab polyacrylamide gel electrophoresis. Low levels of genetic diversity of populations was found: mean numbers of alleles per locus ranged from 1.4 to 1.5: proportions of polymorphic loci ([P.sub.o.99%]) ranged from 27.78 to 33.33; observed heterozygosities ranged from 0.120 to 0.150; expected heterozygosities ranged from 0.123 to 0.131. The results showed that the coefficient of gene differentiation among populations was low ([F.sub.ST] = 0.04), gene flow among populations was large (Nm = 6). Genetic structure was very similar among four cultured populations. The genetic distances between any two of the four populations were 0.002-0.009, with an average of 0.0047. KEY WORDS: Haliotis diversicolor supertexta, allozyme, genetic structure, genetic diversity, genetic differentiation