@article{oai:tmdu.repo.nii.ac.jp:00000595, author = {Akifumi, HAYASHI and Minoru, YAJIMA and Rokuro, KANO and Akifumi, HAYASHI and Minoru, YAJIMA and Rokuro, KANO}, issue = {2}, journal = {The bulletin of Tokyo Medical and Dental University}, month = {Jun}, note = {The insecticidal activity of a new pyrethroid, fenvalerate, and the effects of its synergists were evaluated using the 49-s and 381-s strains from Denmark which are both resistant to pyrethroid. It was found that the effect of fenvalerate was poor on the pyrethroid-resistant strains and little was expected from the addition of its synergists. Rapid development of resistance was observed in the 49-s strain during the selection with permethrin.}, pages = {111--113}, volume = {31}, year = {1984} }