Selection for zinc tolerance in fish: results from laboratory and wild populations
Journal Article
·
· Trans. Am. Fish. Soc.; (United States)
A laboratory population of flagfish (Jordanella floridae), selected for zinc tolerance, showed an increased resistance to toxic zinc concentrations after one generation. However, continued selection for three more generations failed to increase tolerance futher, suggesting that acute zinc exposure culled out weak individuals but did not cause genetic changes specifically related to zinc tolerance. Common shiners (Notropis cornutus) inhabiting a zinc-polluted stream were not more zinc tolerant than common shiners from two nearby unpolluted streams, but appeared to be under stress from the chronic exposure to elevated metal levels. These results and a literature review suggest that although fish may have the genetic potential to evolve metal tolerance, they are unable to do so rapidly enough to survive in environments contaminated by human activities.
- Research Organization:
- Univ. of Wisconsin, Madison
- OSTI ID:
- 6637192
- Journal Information:
- Trans. Am. Fish. Soc.; (United States), Journal Name: Trans. Am. Fish. Soc.; (United States) Vol. 110:1; ISSN TAFSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550400 -- Genetics
560306* -- Chemicals Metabolism & Toxicology-- Man-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EVOLUTION
BIOLOGICAL VARIABILITY
BIOLOGY
COMPARATIVE EVALUATIONS
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
FISHES
GENETIC VARIABILITY
GENETICS
METALS
MORTALITY
POLLUTION
POPULATION DYNAMICS
SENSITIVITY
TOLERANCE
TOXICITY
VERTEBRATES
WATER POLLUTION
ZINC
560306* -- Chemicals Metabolism & Toxicology-- Man-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EVOLUTION
BIOLOGICAL VARIABILITY
BIOLOGY
COMPARATIVE EVALUATIONS
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
FISHES
GENETIC VARIABILITY
GENETICS
METALS
MORTALITY
POLLUTION
POPULATION DYNAMICS
SENSITIVITY
TOLERANCE
TOXICITY
VERTEBRATES
WATER POLLUTION
ZINC