An Assessment of Environmental Risk of Bt-Maize on Rove Beetle Communities

Ecological Chemistry and Engineering S Pub Date : 2022-06-01 DOI:10.2478/eces-2022-0019

J. Twardowski, I. Gruss, P. Bereś, M. Hurej, Z. Klukowski

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Abstract

Abstract An environmental risk assessment related to the genetically modified crops still needs to be studied. In the non-target organisms, rove beetles seem to be well-chosen arthropods for this purpose. Rove beetle abundance and species diversity were studied in the first large-scale Bt-maize experiment in the south part of Poland for over two years to determine the impact of Bt-maize in comparison to conventional varieties. A genetically engineered Bt-maize variety (DKC 3421 Yield Gard®, event MON 810) and its near-isogenic DKC 3420 were cultivated at two locations. Additionally, two non-Bt varieties sprayed with a lambda-cyhalothrin insecticide were also included for comparative analysis. The results show no significant effects on rove beetle abundance and diversity patterns of the Bt-maize and the nearby isolines. In one locality the mean number of individuals and Simpson dominance was even higher in Bt-maize compared to one reference variety. The Canonical Correspondence Analysis showed rather variety-dependent effects of the rove beetle community. To conclude, considering the abundance and diversity of studied insects, there is no environmental risk arising from Bt-maize cultivation.

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bt玉米对甲虫群落的环境风险评价

与转基因作物相关的环境风险评估仍需进一步研究。在非目标生物中，甲虫似乎是为此目的精心选择的节肢动物。在波兰南部进行了为期两年多的首次大规模bt玉米试验，研究了甲虫丰度和物种多样性，以确定bt玉米与常规品种相比的影响。一个转基因bt玉米品种(DKC 3421 Yield Gard®，event MON 810)及其近等基因品种DKC 3420在两个地点进行了栽培。此外，还包括两个喷洒了一种高效氯氟氰菊酯杀虫剂的非bt品种进行比较分析。结果表明，对bt玉米及其附近等值线的甲虫丰度和多样性格局无显著影响。在一个地方，bt玉米的平均个体数和辛普森优势度甚至高于一个参考品种。典型对应分析表明，绿甲虫群落具有明显的品种依赖性。综上所述，考虑到所研究昆虫的丰度和多样性，bt玉米种植不存在环境风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ecological Chemistry and Engineering S

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