title: Relative sensitivity of Daphnia magna and Brachionus calyciflorus to five pesticides.
abstract: Comparative toxicity of several pesticides, lindane, endosulfan, pentachlorophenol (PCP),3,4-dichloroaniline (DCA) and copper sulphate has been tested to determine their lethality in two species of freshwater invertebrates, Daphnia magna and Brachionus calyciflorus. D. magna was more sensitive than B. calyciflorus to all the toxicants tested except to copper sulphate. DCA was the most toxic compound to D. magna and was followed in order of decreasing toxicity by copper sulphate, PCP, endosulfan and lindane. Copper sulphate was the most toxic chemical tested to the rotifer B. calyciflorus and was followed by PCP, endosulfan, lindane and DCA. The 24 hr LC50 values (mg/L) for D. magna and B. calyciflorus, respectively, were: lindane, 1.64 and 22.5; endosulfan, 0.62 and 5.15; DCA, 0.20 and 61.5; PCP, 0.39 and 2.16; copper sulphate, 0.38 and 0.076.
authors.affiliation: Dept. Animal Physiology, Faculty of Biological Sciences, University of Valencia, Spain.
authors.forename: M D
authors.initials: MD
authors.lastname: Ferrando
authors.forename: E
authors.initials: E
authors.lastname: Andreu-Moliner
authors.forename: A
authors.initials: A
authors.lastname: Fernández-Casalderrey
mesh_terms: D000814:Aniline Compounds / Q000633:toxicity; D000818:Animals; D003300:Copper / Q000633:toxicity; D019327:Copper Sulfate; D003621:Daphnia / Q000187:drug effects*; D004726:Endosulfan / Q000633:toxicity; D001556:Hexachlorocyclohexane / Q000633:toxicity; D007928:Lethal Dose 50; D010416:Pentachlorophenol / Q000633:toxicity; D010575:Pesticides / Q000633:toxicity*; D012403:Rotifera / Q000187:drug effects*
chemical_list: D000814:Aniline Compounds; D010575:Pesticides; C014464:3,4-dichloroaniline; D001556:Hexachlorocyclohexane; D003300:Copper; D010416:Pentachlorophenol; D019327:Copper Sulfate; D004726:Endosulfan