Status Of Neonicotinoid Insecticide Resistance in Rice Planthoppers - A Review
Abstract
The status of neonicotinoid insecticide resistance in rice planthoppers viz., brown planthopper Nilaparvafa lugens Stal and whitebacked planthopper Sogatella furcifera (Horvath) in countries like China, Taiwan, Japan and Korea has been reviewed to formulate strategies for its management in India. The information on small brown planthopper Laodelphax striatellus Fallen has also been reviewed because of its similarity in physiology to BPH although it is not an important insect pest in India. Two methods commonly used for monitoring resistance were rice plant root dipping and topical application. Among biochemical mechanisms conferring resistance, target insensitivity as well as oxidation and degradation by mixed-function oxidases (m.f.o.) appeared to be important. The resistant strains of BPH had reduced biological fitness for developmental and reproductive characteristics.
