title: Investigation of acute toxicity of pirimiphos-methyl (Actellic, 25%EC) on guppy (Poecilia reticulata, Peters, 1859).
abstract: Pirimiphos-methyl is a broad spectrum organophosphate insecticide and potential toxic pollutant in aquatic ecosystems. The acute toxicity of Pirimiphos-methyl (Actellic) was investigated using Guppy (Poecilia reticulata) in a 96 h static renewal laboratory bioassay. Based on probit analysis the LC50 was 0.026, 0.024, 0.022 and 0.019 ml L(-1) at 24, 48, 72 and 96 h, respectively. Analysis of Variance (ANOVA) showed that there was significant difference (p < 0.05) in the quantal response (mortality) of P. reticulata to different concentrations of Actellic at 24, 48, 72 and 96 h of exposure. Actellic insecticide is toxic to fish; therefore its indiscriminate use in aquatic environment should be discouraged.
authors.affiliation: Department of Marine Sciences, Faculty of Science, University of Lagos, Akoka-Yaba, Lagos, Nigeria.
authors.forename: M O
authors.initials: MO
authors.lastname: Lawal
authors.forename: O B
authors.initials: OB
authors.lastname: Samuel
mesh_terms: D000818:Animals; D001681:Biological Assay / Q000379:methods; D007306:Insecticides / Q000633:toxicity*; D007928:Lethal Dose 50; D009946:Organothiophosphorus Compounds / Q000633:toxicity*; D011036:Poecilia; D023382:Toxicity Tests, Acute; D014874:Water Pollutants, Chemical / Q000633:toxicity
chemical_list: D007306:Insecticides; D009946:Organothiophosphorus Compounds; D014874:Water Pollutants, Chemical; C014153:pirimiphos methyl