東北被災地におけるハエ類の大発生とその防除

概要

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Multitude frozen fish were strewed around the Tsunami disaster areas from huge freezing storehouses in the northern Japan on March 11, 2011. There were outbreaks of blow flies from rotten fish in the following months. We carefully worked out on the control strategy after investigating rotten fish in the early May from Tanohata-town, Iwate Prefecture, the northernmost study city, to Kesennuma-city, Miyagi Prefecture, the southernmost study city. The larvae of Calliphora nigribarbis were abundant in the early May in the rotten fish, and a few of the adults were found around houses at that time. From the end of May to June, the adults of this species were stormed to the residents. Then, Phormia regina and other blow flies were replaced to C. nigribarbis. The pest control operators from all over Japan were requested to spraying heap of rubble and rotten fish from May to September in the Tsunami disaster areas. We selected Etofenprox emulsion according to the efficacy and avian low toxicity as insecticides and Fenitrothion EC as for the rest. Fly population declined in the end of July by the insecticide spraying, replacement of gavages rubble-mountains or dried-up rotten fish. The high susceptibility of the blow flies to the insecticide was found.
日本衛生動物学会の論文