Biodiversity Science ›› 2018, Vol. 26 ›› Issue (6): 636-644.doi: 10.17520/biods.2017315

• Review • Previous Article     Next Article

Effects of Bt crops on non-target insect pests

Zhengjun Guan1, Shunbao Lu2, Yanlin Huo3, Haoyong Hao3, Jianbin Cao1, Wei Wei4, *(), Biao Liu5, *()   

  1. 1 Department of Biological Sciences, Yuncheng University, Yuncheng, Shanxi 044000
    2 College of Biosciences, Jiangxi Normal University, Nanchang 330022
    3 Science Experimental Center, Yuncheng University, Yuncheng, Shanxi 044000
    4 State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093
    5 Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection, Nanjing 210042
  • Received:2018-04-04 Accepted:2018-04-17 Online:2018-09-11
  • Wei Wei,Liu Biao;
  • About author:

    # Co-first authors

The long-term large-scale planting of genetically modified (GM) crops may have potential impacts on the health and stability of agricultural ecosystems while benefitting agricultural production. Bt proteins expressed in Bt crops have a good control on target pests. However, non-target insects that are not susceptible to Bt toxins may have increased populations rapidly, causing significant damage to crops. With the long-term continued cultivation of insect-resistant GM crops, different reports and views on the amounts of pesticide applications have been reported. Based on existing research, we reviewed the characteristics and status of non-target insect pest outbreaks and analyzed the main causes of the outbreaks (such as insecticide use, decrease of natural enemies, and species replacement). In addition, we discussed the effects of GM crops on non-target pests over long-term cultivation using Bt corn and cotton as examples. Given the existing problems of non-target insect outbreaks due to commercial applications of Bt crops, further studies on monitoring the efficacies of insect-resistant GM crops are necessary to prevent outbreaks of non-target pests needed for sustainable agriculture.

Key words: insect-resistanceBt crops, non-target pests, outbreak, risk assessment

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