Ingestion of environmentally contaminated Lake Ontario salmon by laboratory rats increases avoidance of unpredictable aversive nonreward and mild electric shock
Journal Article
·
· Behavioral Neuroscience; (USA)
- State Univ. of New York, Oswego (USA)
To determine what behavioral changes are caused by consumption of Lake Ontario salmon, a 30% diet of Lake Ontario or control Pacific Ocean salmon was fed to rats for 20 days. In Experiments 1 and 2 (preference-for-predictability E-maze test), rats fed Lake Ontario salmon developed a preference for predictable food rewards more quickly than did the control rats. In Experiments 3 (passive avoidance) and 4 (conditioned suppression), rats fed Lake Ontario salmon suppressed responding to food far more after the introduction of mild electric shocks than did control rats. All results supported the hypothesis that ingestion of Lake Ontario salmon, contaminated with polychlorinated biphenyls, mercury, lead, etc., increases the reactivity of rats to aversive events. The results were successfully simulated by DMOD, a mathematical model of learning, using the assumption that rats fed Lake Ontario salmon find unpredictable nonreward and mild shock more aversive.
- OSTI ID:
- 6991547
- Journal Information:
- Behavioral Neuroscience; (USA), Journal Name: Behavioral Neuroscience; (USA) Vol. 103:6; ISSN BENED; ISSN 0735-7044
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
AROMATICS
BEHAVIOR
CHLORINATED AROMATIC HYDROCARBONS
CONTAMINATION
ELECTRIC SHOCK
ELEMENTS
FEDERAL REGION II
FISHES
FOOD CHAINS
GREAT LAKES
HALOGENATED AROMATIC HYDROCARBONS
LAKE ONTARIO
LAKES
LEAD
LEARNING
MAMMALS
MATHEMATICAL MODELS
MERCURY
METALS
NEW YORK
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
RATS
RODENTS
SALMON
SURFACE WATERS
TOXICITY
USA
VERTEBRATES
WATER POLLUTION
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
AROMATICS
BEHAVIOR
CHLORINATED AROMATIC HYDROCARBONS
CONTAMINATION
ELECTRIC SHOCK
ELEMENTS
FEDERAL REGION II
FISHES
FOOD CHAINS
GREAT LAKES
HALOGENATED AROMATIC HYDROCARBONS
LAKE ONTARIO
LAKES
LEAD
LEARNING
MAMMALS
MATHEMATICAL MODELS
MERCURY
METALS
NEW YORK
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
RATS
RODENTS
SALMON
SURFACE WATERS
TOXICITY
USA
VERTEBRATES
WATER POLLUTION