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Allozyme variation in some marine mussel species at anthropogenic stress and normal conditions

Allozyme variation in some marine mussel species at anthropogenic stress and normal conditions. Nikiforov S.M. THE PURPOSE:.

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Allozyme variation in some marine mussel species at anthropogenic stress and normal conditions

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  1. Allozyme variation in some marine mussel species at anthropogenic stressand normal conditions Nikiforov S.M.

  2. THE PURPOSE: • to compare some parameters of allozyme variation in natural settlements of marine mollusks from unpolluted areas with the same in areas where settlements are under stress by anthropogenic pollution.

  3. Table 1. Content of trace metalsin water ((mkg/l) above line) and bottom sediments ((mkg/g) below line) in some part of Peter the Great Bay.

  4. Table 2. Content of organicpollutants in water ((mkg/l) above line) and bottom sediments ((mkg/g) below line) in some part of Peter the Great Bay.

  5. Fig. 1. Sites of mussels collection in Peter the Great Bay

  6. Fig. 2. Sites of mussels collection in polluted (black circles) and unpolluted (light circles) areas in Peter the Great Bay

  7. Table 3.The statistical significance of differences in allelefrequencies (Р) among Mytilus trossulussettlements from polluted and unpolluted sites in Nakhodka Bay, Vostok Bay, Amurski Bay and Gould Horn Bay.

  8. Table 4. Nei’s indexes of genetic similarity among Mytilus trossulussettlements from polluted and unpolluted sites in Nakhodka Bay, Vostok Bay,Amurski Bay and Gould Horn Bay.

  9. Table 5. The statistical significance of differences in observed heterozygosity (P) among Mytilus trossulussettlements from polluted and unpolluted sites in Nakhodka Bay, Vostok Bay,Amurski Bay and Gould Horn Bay.

  10. Table 6. 5-aminolivulinate (ALA), aminolivulin syntase (ALA-syntase), protoporphyrin (PP), aminopyrena-N-demethylase (APND), cytochromes Cyt.(a+a1), Cyt.b, Cyt.(c+c1), Cyt.P450 activity at mussels tissue from polluted (Gaidamak Bay) and unpolluted (Srednyaya Bay) sites in Vostok Bay.

  11. Table 7. The statistical significance of differences in allelefrequencies (Pa) and observed heterozygosity (Ph) among Tegula rusticasettlements from polluted and unpolluted sites in Peter the Great Bay.

  12. Table 8.The statistical significance of differences in allelefrequencies (Pa) and observed heterozygosity (Ph) among Ischnochiton hakodadensis settlements from polluted and unpolluted sites in Peter the Great Bay.

  13. Table 9.The statistical significance of differences in allelefrequencies (Pa) and observed heterozygosity (Ph) among Nipponacmea moskalevi settlements from polluted (Gaidamak Bay) and unpolluted (Srednyaya Bay) sites in Vostok Bay.

  14. Table 10. Percent of loci with statistically significant differences (P<0.05) in genotypic (G), allele (A) frequencies and observed heterozygosity (H) among conspecific settlements of marine mussels from polluted and unpolluted sites in the Peter the Great Bay (Sea of Japan)

  15. CONCLUSIONS: • We were found thestatistically significant differences in allele frequencies and in level of observed heterozygosity at some loci by comparison settlements from polluted and unpolluted sites of 4 species marine mollusks in Peter the Great Bay. The greater part of observed differences were cause by rare genotypes and rare alleles. • The per sent of losi which are subject to natural selection is quite high. • An absents the differences in mean heterozygosity among mollusk settlements from polluted and unpolluted sites are not consistent with the hypothesis of selective advantage of high-heterozygosity genotypes under anthropogenic pollution stress. • An estimations of differences in genotype and allele frequencies and in level of observed heterozygosity at some loci may be the variables for monitoring of quality sea environments. • Our data are in agreement with the theory of the adaptive significance of allozyme polymorphism.

  16. THANK YOU FOR ATTENTION!

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