Abstract
Allozyme variability in ten polymorphous loci and three samples of the chiton Ischnochiton hakodadensis from Peter the Great Bay, Sea of Japan, was examined by gel electrophoresis. The samples were collected in different areas of the Bay: clean, heavily polluted with petroleum hydrocarbons and detergents, and heavily polluted with heavy metal combinations. It was established that the genetic similarity of the samples was very high, but their differences in allele frequencies, observed heterozygosity, and heterozygote deficiency in some loci were statistically significant. We suppose that allozyme differences between the studied chiton samples are the result of selection to resist anthropogenic pollution of the habitat.
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