The effect of five organophosphorus insecticides on survival and temperature tolerance in the copepod, Macrocyclops albidus (Copepoda: Cyclopidae) |
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Authors: | CLIFFORD RAY JOHNSON |
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Institution: | Division of Biological Control, University of California, Berkeley, 1050 San Pablo Avenue, Albany, California 94706, U.S.A |
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Abstract: | Macrocyclops albidus were exposed for 24 hours to ABATE®, fenthion, malathion, methyl parathion, and chlorpyrifos at concentrations of 1, 5, 10, 25, and 50 parts per billion (ppb). Exposure to chlorpyrifos resulted in the greatest mortality to M. albidus; concentrations of 25 and 50 ppb caused 100% mortality. The thermal tolerance was lowered significantly by all chemicals at concentrations from 1 to 50 ppb. |
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Keywords: | thermal tolerance organophosphorus insecticides copepod Macrocyclops albidus |
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