Impact of transgenic cry1Ab japonica rice on the arthropod community of rice paddies in China

Zhi-cheng LIU1,Yang CHEN1,Jun-ce TIAN1,Zeng-bin LU1, Qing-yao SHU2,Cui HU1,Yu-fa PENG3,Gong-yin YE11Institute of Insect Sciences,State Key Laboratory of Rice Biology,Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects,Zhejiang University;2Institute of Nuclear Agricultural Sciences,Zhejiang University,Hangzhou,Zhejiang 310029,China;3State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China

Bt japonica rice;cry1Ab gene;arthropod;guild;community

The community of arthropods in rice paddies was sampled at three locations over two years.The arthropods captured were divided into five feeding guilds: phytophages,parasitoids,predators,detritivores and others.The effects of two transgenic Bacillus thuringiensis cry1Ab japonica lines(KMD1 and KMD2) were evaluated in terms of guild dominance,family composition and dominance,as well as several indicdes of diversity.The control community was the one present on the untransformed parental rice line Xiushui 11.Compared with the control paddies,the guild dominance,species richness(S),Shannon-Wiener′s diversity index(H′),evenness index(J) and Simpson′s dominance index(C),and the temporal dynamics of Bt rice paddies showed no significant difference at the most situation.The dissimilarities between phytophagous sub-communities,parasitoid sub-communities,predator sub-communities and arthropod communities as a whole in Bt rice plots and the control were apparently low.It was apparent that the transgenic cry1Ab japonica rice has no negative effect on the rice paddy arthropod community.