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Uptake and excretion of organochlorine pesticides by Nereis virens under normoxic and hypoxic conditions

Journal Article · · Bull. Environ. Contam. Toxicol.; (United States)
DOI:https://doi.org/10.1007/BF01881035· OSTI ID:5428791
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The marine polychaete worm, Nereis virens, is resistant to organochlorine pesticides. When exposed to each of five pesticides (endosulfan, chlordane, endrin, dieldrin, and DDT) in concentrations ranging from 0.03 mg/L (DDT) to 22.0 mg/L (chlordane), only endosulfan and chlordane killed Nereis. In comparison, the same compounds were much more toxic to another marine invertebrate, Crangon septemspinosa. The authors wondered if the resistance of N. virens to organochlorines was related to their response to hypoxia. N. virens is a sediment dweller often found in intertidal regions and consequently may experience periods of severe oxygen deprivation; varying degrees of hypoxia can initiate a switch to anaerobic energy metabolism. When N. virens encounter hypoxic conditions, they can also exhibit a compensatory ventilation response. In the present study, the authors measured the bioaccumulation of endosulfan, dieldrin, and DDT by N. virens under normoxic and hypoxic conditions.
Research Organization:
Dept. of Fisheries and Oceans, St. Andrews, New Brunswick
OSTI ID:
5428791
Journal Information:
Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 40:2; ISSN BECTA
Country of Publication:
United States
Language:
English

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Related Subjects

550601 -- Medicine-- Unsealed Radionuclides in Diagnostics
560300* -- Chemicals Metabolism & Toxicology
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
ANNELIDS
ANOXIA
AROMATICS
CLEARANCE
COUNTING TECHNIQUES
DDT
DIELDRIN
EXCRETION
INSECTICIDES
INVERTEBRATES
LABELLED COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PESTICIDES
SCINTILLATION COUNTING
SEDIMENTS
UPTAKE
VENTILATION