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Essay On Insecticide Resistance

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Insecticide resistance in rice planthoppers; influence, molecular mechanism and RNAi as future management Abstract: The evolution of insecticide resistance by insects threatens human welfare through its impact on crop protection and disease transmission. The number of insecticide-resistant species continues to increase worldwide, whereas insecticide resources are diminishing. Rice planthoppers developed resistance to different insecticides threat the success of pest control and resistance management. Thus, understanding the molecular basis of resistance mechanisms, including discovering the function of resistance-related genes, is critical to designing novel resistance management strategies, and developing new insecticidal compounds. Moreover, …show more content…

The first case of insecticide resistance was reported by Melander in 1914 (Melander, 1914). While a few cases of other insecticide resistance were reported before 1940, the number raised exponentially after DDT was introduced along with other synthetic organic insecticides, unfortunately over 500 species resistant to different insecticides (Denholm et al., 2002). While, insecticides have greatly improved human health and agricultural production, their utility has been limited by the evolution of resistance in many major pests. Therefore, it is important to detect resistance when it is at initiative levels and monitor its increase and geographical spread, so that proper procedures can be introduced to curtail its increase (Georghiou, 1994). Thus, effective strategies for resistance management are becoming more important. Designing a novel resistance management strategies and resistance prediction requires information on resistance, cross resistance characteristics (Denholm et al., 2002) and it is extremely important to understand the molecular mechanism of insecticide resistance (Bailey and Prociv, 2000). The effective resistance management depends on early detection of the problem and rapid assimilation of information including the underlying mechanisms so that rational insecticide choices can be made without any delay (Karunaratne,

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