转Cry1Ac基因抗虫玉米Bt-799对田间节肢动物群落多样性的影响

【目的】安全评价是转基因品种研发的重要保障,为明确转基因玉米Bt-799在生物多样性影响方面的安全性,并为其在吉林春玉米区种植提供安全保证,开展了转基因玉米Bt-799对田间节肢动物群落多样性影响的研究。【方法】综合利用直接观察法和地面陷阱法,以多样性指数、均匀度指数、优势度指数等参数以及主要种群动态作为评价指标,系统研究转基因玉米Bt-799对田间节肢动物群落多样性的影响。【结果】转基因玉米Bt-799较之对应的非转基因对照郑58在田间节肢动物群落结构参数、主要种群动态等方面均无显著差异。【结论】转Cry1Ac基因玉米Bt-799在吉林省种植,不会对田间节肢动物群落多样性造成显著不良影响。

Impacts of a transgenic insect-resistant maize (Bt-799) containing a Cry1Ac gene on arthropod biodiversity

[Aim] Bio-safety assessment is an important requirement during the development of genetically modified varieties. We aimed to carry out research on the influence of transgenic Bt-799 maize on the diversity of arthropod communities in Jilin Province, and provide security assurance for its planting in Jilin spring maize region.[Method] We censused the arthropod community by direct observations and by using pitfall traps. Diversity was evaluated with the Shannon-Wiener, Pielou and Simpson indices.[Result] Compared with the non-transgenic maize cv. Zheng 58, as control, the arthropod communities sampled in the transgenic cultivar showed no significant difference in diversity.[Conclusion]Growing the genetically modified maize Bt-799 in Jilin Province is not expected to cause significant negative effects on the diversity of arthropod communities.