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Effects of an Aquatic Plant and Suspended Clay on the Activity of Fish Toxicants
Author(s) -
Gilderhus Philip A.
Publication year - 1982
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8659(1982)2<301:eoaapa>2.0.co;2
Subject(s) - rotenone , pimephales promelas , bentonite , elodea canadensis , permethrin , aquatic plant , pesticide , chemistry , environmental chemistry , toxicology , biology , fish <actinopterygii> , macrophyte , ecology , fishery , biochemistry , minnow , paleontology , mitochondrion
Rotenone, antimycin, permethrin, pydrin, and Salicylanilide I were tested for their toxicities against fathead minnows (Pimephales promelas) in the presence of Canadian waterweed (Elodea canadensis) or suspended clay. The plants had little effect on the activity of rotenone and antimycin but substantially reduced the activity of permethrin and pydrin (synthetic pyrethroids). Bentonite severely inhibited the activity of all chemicals tested. Salicylanilide I was affected least and pydrin most (27 times as much pydrin was required when I g/liter of bentonite was present in 96‐hour tests). The efficacy of the registered fish toxicants rotenone and antimycin is probably not significantly affected by vegetation under field conditions, but is greatly reduced by suspended bentonite clay.