Acute toxicity of a native mummichog population (Fundulus heteroclitus) to mercury
| Autor: | James Klaunig, Michael McCormick, Stephen Koepp |
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| Rok vydání: | 1975 |
| Předmět: |
Time Factors
Health Toxicology and Mutagenesis Population chemistry.chemical_element Biology Toxicology chemistry.chemical_compound Animal science Animals Ecotoxicology education education.field_of_study New Jersey Fishes Mercury General Medicine biology.organism_classification Pollution Acute toxicity Mercury (element) Fundulus Mummichog chemistry Toxicity Toxicant |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 14:534-536 |
| ISSN: | 1432-0800 0007-4861 |
| Popis: | The dose-response of native mummichog populations to mercury was investigated. Male specimens weighing 3.3--3.5 g were collected in Sandy Hook Bay, New Jersey. These fish were acclimated for 7 days at 20/sup 0/C and 20% salinity prior to use in experiments. All exposure were conducted for 96 hours at 20/sup 0/C, 20% salinity, pH 8.0 and 11 different dosages of mercuric chloride. 100% survival was obtained with dosages of numeric chloride ranging up to 0.86 mg/liter. These fish showed no visible response to the presence of the toxicant. However, an increasingly sluggish behavior developed in those fish surviving exposure levels above 1.15 mg/liter. Survivors of dosages exceeding the calculated TLM (2.0 mg/liter) demonstrated a pronounced negative phototaxy. Fish exposed to intermediate levels (1.15--2.0 mg/l) developed uncoordinated swimming movements while exposure to maximal levels produced obvious respiratory stress. |
| Databáze: | OpenAIRE |
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