The insecticide susceptibility of the brown planthopper, Nilaparvata lugens, and white-backed planthopper, Sogatella furcifera, collected from China and Japan.

Abstract

The insecticide susceptibility of the brown planthopper, Nilaparvata lugens, and white-backed planthopper, Sogatella furcifera, collected from China and Japan.

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

“…In contrast to BPH, no significant differences in LD 50 values for imidacloprid were found among Asian WBPH populations, except for one Japanese population (Table 3). The LD 50 values in 2006 were similar to those in Japanese and Chinese populations collected in 1992–2001 (0.02–0.33 µg g −1 ) 7, 11. These results suggest that no insecticide resistance against imidacloprid occurred in WBPH in Asia.…”

“…In the present study, however, the East Asian and Vietnam BPH populations in 2006 had remarkably higher LD 50 values and much smaller slopes of regression lines (Table 2) than those before 2003. In contrast, the BPH populations collected in the Philippines in 2006 had similar LD 50 values and slopes of regression lines for imidacloprid (Table 2) compared with those in East Asian populations before 2003 6–11. These results suggest that insecticide resistance against imidacloprid occurred only in East Asia and Indochina but not in the Philippines.…”

“…Imidacloprid has been widely used since the early 1990s to control rice planthoppers in East Asia and Indochina. The topical LD 50 values of imidacloprid for BPH were in the range 0.09–2 µg g −1 from 1992 to 2003 in Vietnam, China and Japan 6–11. The slopes of the regression lines for BPH in these countries were in the range 2.0–2.5 until 2001 6, 11.…”

Recent Status of Insecticide Resistance in Asian Rice Planthoppers

“…3). Thus, the LD50 values in 2006 were similar to those in Japanese and Chinese populations collected in 1992-2001 8,15 . These results suggest that no resistance to imidacloprid has developed in WBPH in Asia.…”

Insecticide susceptibilities in populations of two rice planthoppers, Nilaparvata lugens and Sogatella furcifera, immigrating into Japan in the period 2005–2012

“…Insecticide susceptibilities of N. lugens and S. furcifera immigrating into Japan were monitored continually with a topical application procedure from the late 1960s to 1992 . After 1992, however, this continual monitoring programme was suspended, with the exception of studies conducted in 1997, and from 1999 to 2001 . The programme was suspended because planthopper abundance was low in the 1990s.…”