中文摘要：转BT基因水稻在一些国家的应用仍然是个有争议的问题。风险评估是转BT基因水稻投入市场前确保生态系统安全的一个先决条件。本文对转BT基因水稻和非转基因水稻田间的蜘蛛群落进行了比较研究。作者在不同的位置和时间进行两个实验，并使用标准多样性指数和多元群落分析对数据进行了分析。基于这两种方法的分析发现，蜘蛛的多样性和群落组成在转BT基因和非转基因水稻田间没有显着差异。但基于主成分分析分析发现，蜘蛛群落的组成会发生季节性变化。在本文的研究中，虽然群落组成和物种丰富度会发生季节性变化，但转BT基因水稻对蜘蛛的群落没有不利影响。研究结果表明，使用群落组成和重复采样来比较蜘蛛的季节性变化具有一定的优势，因为物种或群落并不总是占主导地位，而是可能会随着时间的推移而变化。因此，为了更准确地评估蜘蛛组群落的组成和结构的时间变化，对于那些可能需要一个较长的时间来检测的物种，应增加采样工作和长期实验。
外文摘要：The use of Bt transgenic rice (or Bt rice) remains controversial in several countries, including China. Risk assessments are a prerequisite to confirm the safety of Bt rice for ecosystems before a commercial release. This study was conducted to compare the responses of spider assemblages to Bt rice and nontransgenic rice. Two experiments with different locations and times were conducted, and the data were analyzed using standard diversity indices and multivariate community analysis. With both analytical approaches, spider diversity and assemblage composition were not significantly different between Bt and non transgenic rice fields. However, based on principal component analyses, temporal (seasonal) variations occurred in the composition of the spider assemblage. In this study, Bt rice had no detrimental effects on the spider assemblages, although assemblage composition and species abundance varied during the growing season. This study demonstrated an advantage in using community assemblages and repeated sampling to compare fields over a growing season because changes in the assemblages, and more specifically for some species, not always the most dominant, may vary over time. To more accurately assess the changes in composition and structure of spider assemblages through time, particularly for those species that may require a longer period to detect a response, an increase in sampling effort and longer-term experiments might be required.
外文关键词：multivariate analysis；community analysis；risk assessment；transgenic crop
作者：Lin, Sheng；Vasseur, Liette；You, Min-Sheng
作者单位：福建农林大学
期刊名称：ENVIRONMENTAL ENTOMOLOGY
期刊影响因子：1.315
出版年份：2016
出版刊次：4
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