正文
Published Online May 13, 2010
Science DOI: 10.1126/science.1187881
Science Express Index
Reports
Mirid Bug Outbreaks in Multiple Crops Correlated with Wide-Scale Adoption of Bt Cotton in China
Yanhui Lu,1 Kongming Wu,1,* Yuying Jiang,2 Bing Xia,2 Ping Li,2 Hongqiang Feng,1 Kris A. G. Wyckhuys,1,{dagger} Yuyuan Guo1
Long-term ecological effects of transgenic Bacillus thuringiensis (Bt) crops on non-target pests have received limited attention, more so in diverse smallholder-based cropping systems of the developing world. Field trials conducted over 10 years in northern China show that mirid bugs (Heteroptera: Miridae) have progressively increased population levels and acquired pest status in cotton and multiple other crops, in association with a regional increase in Bt cotton adoption. More specifically, our analyses show that Bt cotton has become a source of mirid bugs and that their population increases are related to drops in insecticide use in this crop. Hence, alterations of pest management regimes in Bt cotton could be responsible for the appearance and subsequent spread of non-target pests at an agro-landscape level.
1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193 P.R. China.
2 National Agro-Technical Extension and Service Center, Beijing, 100026 P.R. China.
{dagger} Present address: Horticulture Research Center, Universidad Jorge Tadeo Lozano, Chia (Cundinamarca), Colombia.
* To whom correspondence should be addressed. E-mail: kmwu@ippcaas.cn
Science DOI: 10.1126/science.1187881
Science Express Index
Reports
Mirid Bug Outbreaks in Multiple Crops Correlated with Wide-Scale Adoption of Bt Cotton in China
Yanhui Lu,1 Kongming Wu,1,* Yuying Jiang,2 Bing Xia,2 Ping Li,2 Hongqiang Feng,1 Kris A. G. Wyckhuys,1,{dagger} Yuyuan Guo1
Long-term ecological effects of transgenic Bacillus thuringiensis (Bt) crops on non-target pests have received limited attention, more so in diverse smallholder-based cropping systems of the developing world. Field trials conducted over 10 years in northern China show that mirid bugs (Heteroptera: Miridae) have progressively increased population levels and acquired pest status in cotton and multiple other crops, in association with a regional increase in Bt cotton adoption. More specifically, our analyses show that Bt cotton has become a source of mirid bugs and that their population increases are related to drops in insecticide use in this crop. Hence, alterations of pest management regimes in Bt cotton could be responsible for the appearance and subsequent spread of non-target pests at an agro-landscape level.
1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193 P.R. China.
2 National Agro-Technical Extension and Service Center, Beijing, 100026 P.R. China.
{dagger} Present address: Horticulture Research Center, Universidad Jorge Tadeo Lozano, Chia (Cundinamarca), Colombia.
* To whom correspondence should be addressed. E-mail: kmwu@ippcaas.cn
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