Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids

doi:10.1038/s41598-021-81855-8

	Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids
	Qiao, Fei 1,3; Yang, Quan-Feng 2,3; Hou, Rui-Xing 1; Zhang, Ke-Ning 2,3; Li, Jing 1; Ge, Feng 2,3; Ouyang, Fang 3
刊名	SCIENTIFIC REPORTS
	2021-01-28
卷号	11 期号:1 页码:10
ISSN号	2045-2322
DOI	10.1038/s41598-021-81855-8
通讯作者	Li, Jing(jingli@igsnrr.ac.cn) ; Ge, Feng(gef@ioz.ac.cn) ; Ouyang, Fang(ouyangf@ioz.ac.cn)
英文摘要	Examination of the tradeoff between the extent of decreasing nitrogen input and pest suppression is crucial for maintaining the balance between essential yield and an efficient, sustainable pest control strategy. In this study, an experiment with four manipulated nitrogen fertilizer levels (70, 140, 210, and 280 kg N ha(-1)=conventional level) was conducted to explore the effects of decreasing nitrogen on cereal aphids (Sitobion avenae and Rhopalosiphum padi) (Hemiptera: Aphididae), Aphidiinae parasitoids (Hymenoptera: Braconidae: Aphidiinae), and body sizes of parasitoids. The results indicated that nitrogen application, in the range of 70-280 kg N ha(-1), has the potential to impact the populations of cereal aphids and their parasitoids. However, both differences between densities of cereal aphids and their parasitoids in moderate (140-210 kg N ha(-1)) and those in high nitrogen input (280 kg N ha(-1)) were not significant, and the parasitism rate was also unaffected. A higher parasitism rate reduced population growth of the cereal aphid (S. avenae). Additionally, a moderate decrease of nitrogen fertilizer from 280 to 140-210 kg N ha(-1) maximized the body sizes of Aphidiinae parasitoids, indicating that a moderate decrease of nitrogen fertilizer could facilitate biocontrol of cereal aphid by parasitoids in the near future. We conclude that a moderate decrease in nitrogen application, from 280 to 140-210 kg N ha(-1), does not quantitatively impact the densities of cereal aphids or the parasitism rate but can qualitatively maximize the fitness of the parasitoids.
资助项目	National Key Research and Development Plan of China[2017YFD0200600] ; National Key Research and Development Plan of China[2017YFD0200400]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE RESEARCH
WOS记录号	WOS:000616821300027
资助机构	National Key Research and Development Plan of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/160719]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Jing; Ge, Feng; Ouyang, Fang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, CAS Ctr Excellence Biot Interact, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest & Rodent, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Qiao, Fei,Yang, Quan-Feng,Hou, Rui-Xing,et al. Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids[J]. SCIENTIFIC REPORTS,2021,11(1):10.
APA	Qiao, Fei.,Yang, Quan-Feng.,Hou, Rui-Xing.,Zhang, Ke-Ning.,Li, Jing.,...&Ouyang, Fang.(2021).Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids.SCIENTIFIC REPORTS,11(1),10.
MLA	Qiao, Fei,et al."Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids".SCIENTIFIC REPORTS 11.1(2021):10.