Acute toxicity tests were conducted on permethrin (Pounce(R)), a synthetic pyrethroid, by using 8-12- and 20-30-mm Louisiana red swamp crayfish (Procambarus clarkii), fry channel catfish (Ictalurus punctatus), fingerling largemouth bass (Micropterus salmoides), mosquitofish (Gambusia affinis), and bullfrog tadpoles (Rana catesbeiana). The 96-h LC50 values were 0.39, 0.62, 1.1, 8.5, 15.0, and 7,033 μg/liter, respectively.
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Jolly et al. (1978) studied this question.