Effects of genetically modified herbicide tolerant rice (Oryza sativa) on population density of two sucking insect pests and two natural enemies in rice fields
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Key Words： transgenic rice, genetically modified crops, non-target organisms, insect pest, natural enemy, environmental safety
Abstract： To clarify whether genetically modified herbicide tolerant (GMHT) rice has impacted on non-target organisms or not, population densities of two sucking insect pests (planthoppers and leafhoppers) and two of their natural enemies (Miridae and Araneae) were compared in fields of GMHT and non-GM rice. With the exception of Miridae in a non-sprayed area during the rice milky stage in 2007 and middle tillering stage in 2008, there were no significant differences in the population densities of these organisms between GMHT and non-GM rice. This indicates that GMHT rice Bar68-1 had basically similar effects as non-GM rice D68 on natural populations of non-target organisms, including the Delphacidae, Iassidae, Miridae and Araneae.