Abstract
Previous laboratory studies with mercury pollution revealed that the sensitive alleles are (S) for the phosphoglucose isomerase (PGI) locus in both Littorina punctata and L. neritoides and the allele (M+) for the amino peptidase (AP) locus in L. neritoides (Lavie and Nevo, 1986b). The present study tested the frequencies of these alleles at 8 sites along the Israeli Mediterranean shore. We found the frequencies of the sensitive alleles at the mercury polluted site at Akko to be lower than at all other seven sites. Therefore, we concluded that allozyme frequency distributions found in nature are consistent with survivorship patterns found in the laboratory. These results reinforce the suggestion (Nevo et al., 1980) that a monitoring system based on changes in population genetic structure is not only theoretically commendable but practically feasible in principle.
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Nevo, E., Lavie, B. & Noy, R. Mercury selection of allozymes in marine gastropods: Prediction and verification in nature revisited. Environ Monit Assess 9, 233–238 (1987). https://doi.org/10.1007/BF00419897
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DOI: https://doi.org/10.1007/BF00419897