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Effects of fenvalerate on the early life stages of topsmelt ( Atherinops Affinis )
Author(s) -
Goodman Larry R.,
Hemmer Michael J.,
Middaugh Douglas P.,
Moore James C.
Publication year - 1992
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.5620110315
Subject(s) - fenvalerate , pyrethroid , biology , hatching , toxicology , juvenile , pesticide , fish <actinopterygii> , zoology , juvenile fish , toxicity , fishery , chemistry , ecology , organic chemistry
Flow‐through acute and early‐life‐stage (ELS) toxicity tests were conducted with topsmelt (Atherinops affinis) , a Pacific coast saltwater fish, and fenvalerate, a synthetic pyrethroid insecticide. The 96‐h LC50 for juvenile fish was 0.66 μg/L. In the 30‐d ELS test with laboratory‐spawned embryos, average measured fenvalerate concentrations were nondetectable (>0.075 μg/L) in two control treatments, 0.14, 0.34, 0.82, 1.5, and 3.2 μg/L. Survival of embryos to hatching ranged from 94 to 100%, with no statistically significant differences among treatments. No fry survived exposure to fenvalerate concentrations ≥0.82 μg/L; overall survival in lower concentrations and control treatments ranged from 86 to 97%. There were no consistent concentration‐dependent differences in weight between fish in the carrier‐control treatment and fish exposed to fenvalerate. Mean wet weights of surviving fish ranged from 16.9 mg in 0.34 μg/L to 20.3 mg in 0.14 μg/L. The average bioconcentration factor for fish exposed to 0.14 and 0.34 μg fenvalerate per liter was 315.