Environmental contaminants and the reproductive success of lake trout in the Great Lakes: An epidemiological approach
- U.S. Fish and Wildlife Service, National Fisheries Research Center-Great Lakes, Ann Arbor, MI (USA)
Epidemiological criteria were used to examine the influence of environmental contamination on reproductive success of lake trout (Salvelinus namaycush) in the Laurentian Great Lakes. Most of the information was obtained from lake trout eggs collected in southeastern Lake Michigan and reared in the laboratory. Two separate end points that measure reproductive success--egg hatchability and fry survival--were used in the evaluation. Strong evidence for maternally derived polychlorinated biphenyls causing reduced egg hatchability were observed for the time order, strength of association, and coherence criteria. Equally strong evidence for organic environmental contaminants, also of maternal origin, causing a swim-up fry mortality syndrome were presented for the strength of association, specificity, replication, and coherence criteria. The epidemiological approach for demonstrating cause-and-effect relations was useful because of the difficulty in demonstrating definite proof of causality between specific environmental contaminants and reproductive dysfunction in feral fish.
- OSTI ID:
- 5163676
- Journal Information:
- Journal of Toxicology and Environmental Health; (United States), Vol. 33:4; ISSN 0098-4108
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHLORINATED AROMATIC HYDROCARBONS
TOXICITY
LAKE MICHIGAN
WATER POLLUTION
TROUT
SENSITIVITY
EGGS
EPIDEMIOLOGY
FRESH WATER
MORTALITY
REPRODUCTION
ANIMALS
AQUATIC ORGANISMS
AROMATICS
FISHES
GREAT LAKES
HALOGENATED AROMATIC HYDROCARBONS
HYDROGEN COMPOUNDS
LAKES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
SURFACE WATERS
VERTEBRATES
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology