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>Allozyme genotype in mosquitofish,Gambusia holbrooki, during mercury exposure: Temporal stability, concentration effects and field verification
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Allozyme genotype in mosquitofish,Gambusia holbrooki, during mercury exposure: Temporal stability, concentration effects and field verification
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机译：Allozyme genotype in mosquitofish,Gambusia holbrooki, during mercury exposure: Temporal stability, concentration effects and field verification
AbstractGenotype frequencies at nine enzyme loci were examined in a population of mosquitofish,Gambusia holbrooki, during acute inorganic mercury exposure at three concentrations. Genotype at one locus, glucose phosphate isomerase‐2 (Gpi‐2), was correlated with time to death (TTD) at the low (0.83 mg/L) mercury concentration, but genotypes at none of the nine loci were related to TTD at the medium (1.07 mg/L) or the high (1.13 mg/L) mercury concentration. A survey of mosquitofish from a mercury‐contaminated canal was undertaken to determine if the results of laboratory exposures could be used to predict accurately the genetic profile of mercury‐contaminated field populations. Mosquitofish collected from the contaminated canal had a significantly lower frequency of theGpi‐238allele than mosquitofish collected from the adjacent noncontaminated river. TheGpi‐2allozymes may be useful as an indicator of pollutant stress if used in conjunction with a thorough understanding of the structure and history of the
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