Population dynamics of Spodoptera litura (Lepidoptera : Noctuidae) oil Bt cotton in the Yangtze River Valley of China
文献类型: 外文期刊
第一作者: Wu, Kongming
作者: Wu, Kongming;Wan, Peng;Huang, Minsong;Yu, Dazhao;Wu, Jixping
作者机构:
关键词: Bt cottom;common cutworm;survival;population dynamics
期刊名称:ENVIRONMENTAL ENTOMOLOGY ( 影响因子:2.377; 五年影响因子:2.298 )
ISSN: 0046-225X
年卷期: 2008 年 37 卷 4 期
页码:
收录情况: SCI
摘要: Genetically modified cotton that produces a crystalline protein from Bacillus thuringiensis subsp. kurstaki (Berliner) (Bt) has been widely deployed to manage lepidopteran insect pests in cottin growing areas worldwide. However, susceptibility of different insect species to Bt protein varies, which may effect lepidopteran pest populations in the field. Studies on effects of two transgenic cotton lines (BC1560 and GK19) carrying a Cry1A gene on common cutworm Spodoptera litura F. (Lepidoptera: Noctuidae), were conducted during 2002-2005 in the cotton planting region of the Ysangtze River valley of China. Results showed that common cutworm larvae had low susceptibility to Bt cotton. There was no significant difference in larval population densities in conventional and Bt cotton fields. However, the larval populations of the insect on conventional plants treated with chemical insecticides for control of target pest of Bt cotton cutworm was the potential to become a major and alarming pest in Bt cotton fields, and therefore efforts to develop an effective alternative management strategy are needed.
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