U.S. Department of EnergyOffice of Scientific and Technical Information
Chronic effects of 2,2'-dichlorobiphenyl on reproduction, mortality, growth, and respiration of daphnia pulicaria
Abstract
Previous studies have shown toxic effects of polychlorinated biphenyls (PCBs) on aquatic life only in the micro g/L range, well above normal ambient concentrations. Daphnia pulicaria was isolated from Lake Erie and exposed to 50 ng/L to 10 micro g/L of 2,2'-dichlorobiphenyl (DCB) in lifetable and physiological studies. Reproduction, mortality, growth, and respiration were measured for periods up to the entire lifespan of the animal with and without the use of an organic surfactant. Significant mortality and inhibition of reproduction were found at levels as low as 50-100 ng/L in lifetable studies, and no safe level could be determined. A unique, yet repeatable, dose-response curve occurred in lifetables with maximum inhibition at low to intermediate concentrations. Inhibition at the highest level tested, 10 micro g/L, occurred only after continuous exposure for three generations. Increasing concentrations of CBD stimulated growth, while respiration experiments yielded variable results.
- Authors:
- Publication Date:
- Research Org.:
- Minnesota Univ., Minneapolis, MN (USA). Dept. of Ecology and Behavioral Biology
- OSTI Identifier:
- 6967738
- Report Number(s):
- PB-90-147638/XAB
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Pub. in Archives of Environmental Contamination and Toxicology, Vol. 17, 731-740(1988)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CHLORINATED AROMATIC HYDROCARBONS; TOXICITY; DAPHNIA; SENSITIVITY; ANIMAL GROWTH; BIPHENYL; DOSE-RESPONSE RELATIONSHIPS; MORTALITY; RESPIRATION; WATER POLLUTION; ANIMALS; AQUATIC ORGANISMS; AROMATICS; ARTHROPODS; BRANCHIOPODS; CRUSTACEANS; GROWTH; HALOGENATED AROMATIC HYDROCARBONS; HYDROCARBONS; INVERTEBRATES; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; POLLUTION; 560300* - Chemicals Metabolism & Toxicology
Citation Formats
Bridgham, S D. Chronic effects of 2,2'-dichlorobiphenyl on reproduction, mortality, growth, and respiration of daphnia pulicaria. United States: N. p., 1988.
Web.
Bridgham, S D. Chronic effects of 2,2'-dichlorobiphenyl on reproduction, mortality, growth, and respiration of daphnia pulicaria. United States.
Bridgham, S D. 1988.
"Chronic effects of 2,2'-dichlorobiphenyl on reproduction, mortality, growth, and respiration of daphnia pulicaria". United States.
@article{osti_6967738,
title = {Chronic effects of 2,2'-dichlorobiphenyl on reproduction, mortality, growth, and respiration of daphnia pulicaria},
author = {Bridgham, S D},
abstractNote = {Previous studies have shown toxic effects of polychlorinated biphenyls (PCBs) on aquatic life only in the micro g/L range, well above normal ambient concentrations. Daphnia pulicaria was isolated from Lake Erie and exposed to 50 ng/L to 10 micro g/L of 2,2'-dichlorobiphenyl (DCB) in lifetable and physiological studies. Reproduction, mortality, growth, and respiration were measured for periods up to the entire lifespan of the animal with and without the use of an organic surfactant. Significant mortality and inhibition of reproduction were found at levels as low as 50-100 ng/L in lifetable studies, and no safe level could be determined. A unique, yet repeatable, dose-response curve occurred in lifetables with maximum inhibition at low to intermediate concentrations. Inhibition at the highest level tested, 10 micro g/L, occurred only after continuous exposure for three generations. Increasing concentrations of CBD stimulated growth, while respiration experiments yielded variable results.},
doi = {},
url = {https://www.osti.gov/biblio/6967738},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}