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Chronic toxicity of di‐ n ‐butyl and di‐ n ‐octyl phthalate to Daphnia magna and the fathead minnow
Author(s) -
McCarthy J. F.,
Whitmore D. K.
Publication year - 1985
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620040206
Subject(s) - minnow , pimephales promelas , daphnia magna , hatching , fecundity , phthalate , toxicity , biology , toxicology , reproduction , zoology , chemistry , medicine , fish <actinopterygii> , ecology , fishery , population , environmental health , organic chemistry
The toxicities of di‐ n ‐butyl phthalate (DBP) and di‐ n ‐octyl phthalate (DOP) were assessed by measuring the effect of exposure to these compounds on the fecundity of Daphnia magna and on the hatching and survival of the early life stages of the fathead minnow Pimephales promelas. For D. magna , exposure to 1.8 mg/L DBP or 1.0 mg/L DOP caused a significant reduction in reproduction. Doses of 0.56 mg/L DBP or 0.32 mg/L DOP had no significant effect in decreasing reproduction. Survival of fathead minnow embryos was decreased by exposure to 1.8 mg/L DBP; none of the embryos exposed to this dose hatched successfully. Hatching and larval survival were affected by exposure to 1.0 mg/L DBP, but not to 0.56 mg/L. Exposure to DOP did not affect survival of either early embryos or larvae of the fathead minnow at doses up to 10 mg/L (the highest dose tested). Hatching of the embryos was significantly decreased at 10 mg/L, but not at 3.2 mg/L DOP.