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Effects of dechlorination on early life stages of striped bass (Morone saxatilis)

Journal Article · · Environ. Sci. Technol.; (United States)
DOI:https://doi.org/10.1021/es00087a009· OSTI ID:6702189
; ; ;

Effects of sulfur dioxide (SO/sub 2/) dechlorination on estuarine striped bass (Monroe saxatilis) eggs and larvae were evaluated by exposing the organisms to the following conditions: total residual chlorine (TRC); SO/sub 2/'; TRC-SO/sub 2/ dechlorination, and control. Continuous exposure to TRC concentrations ranging from 0.06 to 2.0 mg/L were lethal to both life stages over a 96-h exposure period. The same range of SO/sub 2/ (sulfite) concentrations caused an effect on the eggs after 36 h; however, percent mortality did not increase with concentration of SO/sub 2/. Few mortalities occurred at exposures less than 36 h. Mortality of larvae was higher than the controls at all SO/sub 2/ conditions after 96 h although the mean mortality at all concentrations was only 20% greater than the controls. Minimal mortality occurred at shorter exposure intervals. Mean mortality of test organisms exposed to TRC-SO/sub 2/ dechlorination conditions was only 11% higher for eggs (36 h) and 22% higher for larvae (96 h) than controls. Dechlorination caused significant reductions in TRC toxicity at all exposure periods less than 36 and 96 h for eggs and larvae, respectively.

Research Organization:
Benedict Estuarine Lab., MD
OSTI ID:
6702189
Journal Information:
Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 15:5; ISSN ESTHA
Country of Publication:
United States
Language:
English

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Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINE
DATA
DECHLORINATION
DEHALOGENATION
ELEMENTS
EXPERIMENTAL DATA
FISHES
HALOGENS
ICHTHYOPLANKTON
INFORMATION
MORTALITY
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLANKTON
SALINITY
STRIPED BASS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TIME DEPENDENCE
TOXICITY
VERTEBRATES