Applied Entomology and Zoology (2000) 35, 591-595

K.D. Ninsin, J.C. Mo and T. Miyata (2000)
Decreased susceptibilities of four field populations of the diamondback moth, Plutella xylostella (L.) (Lepidoptera : Yponomeutidae), to acetamiprid
Applied Entomology and Zoology 35 (4), 591-595
Abstract: The efficacy of acetamiprid, a neonicotinoid insecticide, against four field populations of the diamondback moth, Plutella xylostella (L.), from Aichi, Hyogo and Kagoshima Prefectures in Japan was determined using the leaf-dipping method. The data obtained indicated that, compared to the reference Osaka susceptible strain (OSS), the four field populations were tolerant to the insecticidal effect of acetamiprid,.displaying LC₅₀ resistance ratio (RR) of 4.5-9.0. Maintaining the population from Aichi Prefecture in the laboratory without exposure to acetamiprid resulted in a decline of the LC₅₀ RR from 9.0 to 1.6 over seven generations, suggesting that acetamiprid-resistance is not stable.
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Database assignments for author(s): Tadashi Miyata

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella		Japan