Species‐specific insecticide resistance to imidacloprid and fipronil in the rice planthoppers Nilaparvata lugens and Sogatella furcifera in East and South‐east Asia

Pest Management Science - Tập 64 Số 11 - Trang 1115-1121 - 2008
Masaya Matsumura1, Hiroaki Takeuchi1, Masaru Satoh1, Sachiyo Sanada‐Morimura1, Akira Otuka2, Tomonari Watanabe2, Dinh Van Thanh3
1National Agricultural Research Centre for Kyushu Okinawa Region, Kumamoto, Japan.
2National Agricultural Research Centre, Ibaraki, Japan
3Plant Protection Research Institute, Vietnam Academy of Agriculture Science, Hanoi, Vietnam

Tóm tắt

AbstractBACKGROUND: In 2003 the development of insecticide resistance against neonicotinoids in the brown planthopper (BPH), Nilaparvata lugens (Stål) (Homoptera: Delphacidae), was first observed in Thailand and has since been found in other Asian countries such as Vietnam, China and Japan. However, the LD50 values of BPH and the whitebacked planthopper (WBPH), Sogatella furcifera (Horváth), against both neonicotinoid and phenylpyrazole insecticides have been poorly reported in many Asian countries.RESULTS: The topical LD50 values for imidacloprid in the BPH populations collected from East Asia (Japan, China, Taiwan) and Vietnam in 2006 were 4.3–24.2 µg g−1 and were significantly higher than those collected from the Philippines (0.18–0.35 µg g−1). The BPH populations indicated a positive cross‐resistance between imidacloprid and thiamethoxam. Almost all the WBPH populations from Japan, Taiwan, China, Vietnam and the Philippines had extremely large LD50 values (19.7–239 µg g−1 or more) for fipronil, except for several populations from the Philippines and China.CONCLUSION: Species‐specific changes in insecticide susceptibility were found in Asian rice planthoppers (i.e. BPH for imidacloprid and WBPH for fipronil). Insecticide resistance in BPH against imidacloprid occurred in East Asia and Indochina, but not in the Philippines. In contrast, insecticide resistance in WBPH against fipronil occurred widely in East and South‐east Asia. Copyright © 2008 Society of Chemical Industry

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Pest Management Science

Tập 64 Số 11

1115-1121

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