The response to flooding of two overwintering rice stem borers likely accounts for their changing impacts

文献类型： 外文期刊

第一作者： Luo, Guang-Hua

作者： Luo, Guang-Hua;Luo, Zhi-Xin;Zhang, Zhi-Ling;Fang, Ji-Chao;Sun, Yang;Lu, Ming-Hong;Shu, Zhao-Lin;Tian, Zi-Hua;Hoffmann, Ary A.

作者机构：

关键词： Chilo suppressalis; Scirpophaga incertulas; Overwintering population; Mortality rate; Flooding practice control

期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.918； 五年影响因子：5.955 ）

ISSN： 1612-4758

年卷期：

页码：

收录情况： SCI

摘要： The rice striped stem borer (SSB),Chilo suppressalisWalker, and the rice yellow stem borer (YSB),Scirpophaga incertulasWalker, are two of the most damaging pests of rice plant, whose relative crop damage has changed in recent years. Here, we carried out experiments and surveys to understand the potential impact of field flooding on populations of these species. YSB had a consistently higher mortality rate than SSB in overwintering populations. We show that SSB survived under submersion better than YSB, crawled more strongly than YSB, and escaped more effectively from a waterlogged environment than YSB. These differences may relate partly to the longer abdominal prolegs and thoracic legs of SSB than YSB. These factors likely explain why YSB has a higher mortality rate than SSB in overwintering populations and why the relative importance of YSB is declining in some areas. In addition, the flooding method provides an effective cultural practice for some crops. Our results uncover the reasons why flooding practice is more effective for YSB than SSB. The results also point to an effective control measure for YSB.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序