Allozyme genotype in mosquitofish, Gambusia holbrooki, during mercury exposure: Temporal stability, concentration effects and field verification

Journal Article · Mon Feb 01 00:00:00 EST 1993 · Environmental Toxicology and Chemistry; (United States)

DOI:https://doi.org/10.1897/1552-8618(1993)12[385:AGIMGH]2.0.CO;2· OSTI ID:6389872

Heagler, M G ^[1]

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1. Univ. of Georgia, Aiken, SC (United States) Rutgers, The State Univ. of New Jersey, New Brunswick (United States)

Genotype frequencies at nine enzyme loci were examined in a population of mosquito fish, Gambusia holbrooki, during acute inorganic mercury exposure at three concentration. Genotype at one locus, glucose phosphate isomerase-2 (Gpi-2), was correlated with time to death (TTD) at the low mercury concentration, but genotypes at none of the nine loci were related to TTD at the medium or the high 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 the Gpi-2[sup 38] allele than mosquitofish collected from the adjacent noncontaminated river. The Gpi-2 allozymes may be useful as an indicator of pollutant stress if used in conjunction with a thorough understanding of the structure and history of the population.

• DOE Contract Number: AC09-76SR00819
• OSTI ID: 6389872
• Journal Information: Environmental Toxicology and Chemistry; (United States), Vol. 12:2; ISSN 0730-7268
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
FISHES
SENSITIVITY
MERCURY
TOXICITY
WATER POLLUTION
BIOLOGICAL INDICATORS
ACUTE EXPOSURE
FORECASTING
GENOTYPE
ISOMERASES
ANIMALS
AQUATIC ORGANISMS
ELEMENTS
ENZYMES
METALS
ORGANIC COMPOUNDS
POLLUTION
PROTEINS
VERTEBRATES
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology