Toxicities of two chloroacetamide herbicides (metolachlor and alachlor) and an organophosphate insecticide (chlorpyrifos) were evaluated individually, and with each herbicide in binary combinations with chlorpyrifos using the fourth instars of the aquatic midge, Chironomus tentans. Our results indicated significant synergistic effects of these herbicides on the toxicity of chlorpyrifos. The possible biochemical mechanisms conferring the synergistic effects of the herbicides were discussed in this report.
Species 1: Diptera Chironomidae Chironomus tentans (aquatic midges)
Keywords: Herbicide, Synergistic toxicity
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA