您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Increased ladybird predation and metabolism do not counterbalance increased field aphid population growth under experimental warming

文献类型： 外文期刊

作者： Wang, Yang 1 ; Jaworski, Coline C. 3 ; Zi, Hongyuan 1 ; Chen, Julian 1 ; Desneux, Nicolas 3 ; Tan, Xiaoling 1 ;

作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing, Peoples R China

2.Guizhou Univ, Key Lab Green Pesticide & Agr Bioengn, Minist Educ, Guiyang, Peoples R China

3.Univ Cote Azur, INRAE, UMR ISA, Nice, France

4.Shenyang Agr Univ, Coll Plant Protect, Shenyang, Peoples R China

关键词： climate change; DNA degradation rate; global warming; Harmonia axyridis; molecular gut content analysis; predator-prey interaction

期刊名称：FUNCTIONAL ECOLOGY （ 影响因子：5.2； 五年影响因子：6.0 ）

ISSN： 0269-8463

年卷期： 2024 年 38 卷 5 期

页码：

收录情况： SCI

摘要： Climate change may have diverse and complex impacts on species interactions, destabilizing food webs and ecosystem services. The effects of warming on the top-down biological control of crop pests have been considerably less studied than bottom-up effects through crop physiological changes. We studied the effect of a 2 degrees C warming in the laboratory and in wheat fields on the predation and metabolism of Harmonia axyridis on wheat aphids using molecular gut content analysis. We also measured the effects of warming on the predation rate and functional response of H. axyridis on each aphid species in the laboratory, as well as on DNA degradation rate. Field densities of Sitobion avenae and Rhopalosiphum padi, the two most abundant wheat aphid species, were increased by 2 and 2.5 times, respectively, under experimental warming, but densities of H. axyridis were not. Field predation rate of H. axyridis on these two aphid was found to be about 25% lower under elevated temperature. This could have been due to faster prey digestion, since degradation of the preferred aphid species, Sitobion avenae, was 1.5 times faster under elevated temperature. However, the functional response of H. axyridis larvae on these two species was 1.5 times higher under warming over the range of prey densities tested (50-250 over 24 h). The total predation rate of H. axyridis larvae on a mixture of S. avenae, R. padi and Schizaphis graminum aphid prey was also increased by 1.4 times, but consumption of R. padi aphids was increased while that of S. graminum was decreased under warming. Overall, our results show that global warming could strongly increase pest outbreaks and destabilize biological pest control, which would likely result in accrued yield losses.Read the free Plain Language Summary for this article on the Journal blog. Read the free Plain Language Summary for this article on the Journal blog. image

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台