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

• Published in: Pest management science 2014-04, Vol.70 (4), p.615-622
• Main Authors: Matsumura, Masaya, Sanada‐Morimura, Sachiyo, Otuka, Akira, Ohtsu, Reiko, Sakumoto, Shinji, Takeuchi, Hiroaki, Satoh, Masaru
• Format: Article
• Language: English
• Subjects: Animals; Biological and medical sciences; brown planthopper; Carbamates - toxicity; Control; Female; fipronil; Fundamental and applied biological sciences. Psychology; Hemiptera; imidacloprid; Imidazoles - toxicity; Insect control; insecticide resistance; Insecticide Resistance - physiology; Insecticides; Insecticides - toxicity; insects; Introduced Species; Japan; lethal dose 50; malathion; Neonicotinoids; Nilaparvata lugens; Nitro Compounds - toxicity; Organothiophosphates - toxicity; Oryza; Oryza sativa; pests; Phytopathology. Animal pests. Plant and forest protection; Plant resistance; Protozoa. Invertebrates; Pyrazoles - toxicity; Pyrethrins - toxicity; rice; Sogatella furcifera; Thiazoles - toxicity; topical application; whitebacked planthopper
• ISSN: 1526-498X; 1526-4998
• DOI: 10.1002/ps.3590

BACKGROUND: The brown planthopper Nilaparvata lugens and the whitebacked planthopper Sogatella furcifera are both important pests on rice throughout Asia. The major cause of recent outbreaks is thought to be the development of insecticide resistance. Thus, the authors monitored insecticide susceptibilities in populations of these two insects immigrating into Japan in the period 2005–2012. Ten insecticides were tested, including members of the organophosphate, carbamate, pyrethroid, neonicotinoid and phenylpyrazole groups. RESULTS: The LD₅₀ values of N. lugens against imidacloprid increased from 2005 (0.7 µg g⁻¹) to 2012 (98.5 µg g⁻¹). The resistance ratio (LD₅₀ value in 2012/baseline LD₅₀ value in 1992) was 615.5. In contrast, LD₅₀ values of N. lugens against fipronil were