Midge Larvae Control In Commercial Catfish Ponds: Toxicity Of Abate(r) To Channel Catfish (Ictalurus Punctatus)

Populations of midges are a general nuisance around commercial catfish ponds in the Mississippi Delta, Abate(R) [(O,O,O',O'-tetramethyl O,O'-thiodi-pphenylene phosphorothioate) American Cyanamid Company] is recommended for midge larvae control in aquatic areas at a concentratIOn of about 2 ppb. Data in this study show that the LC50 ofAbate to channel catfish is between 5 and 7 ppm. This represents a wide safety margin that should insure Abate to be non-toxic to channel catfish when used at the recommended rate for midge larvae control.

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