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Experimental temperature elevation promotes the cooperative ability of two natural enemies in the control of insect herbivores

文献类型： 外文期刊

作者： Jiang, Jie-Xian 1 ; Yang, Jun-Hua 1 ; Ji, Xiang-Yun 1 ; Zhang, Hao 1 ; Wan, Nian-Feng 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai Key Lab Protected Hort Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

2.Fudan Univ, Inst Biodivers Sci, Minist Educ, Key Lab Biodivers Sci & Ecol Engn, 2005 Songhu Rd, Shanghai 200438, Peoples R China

关键词： Biological control;Global warming;Insect herbivore;Host discrimination;Nucleopolyhedrovirus;Parasitoid;Synergism

期刊名称：BIOLOGICAL CONTROL （ 影响因子：3.687； 五年影响因子：3.962 ）

ISSN： 1049-9644

年卷期： 2018 年 117 卷

页码：

收录情况： SCI

摘要： One of the major drivers of global change is temperature elevation, which plays an important role in ecological interactions among species. However, it is still not known whether experimental temperature elevation promotes or inhibits the coexistence of multiple natural enemies of insect herbivores. We hypothesize that increased temperatures will favor synergisms among natural enemies. We examined the effects of temperature increases on an insect herbivore, beet armyworm (Spodoptera exigua) and its two most important natural enemy groups parasitic wasps (Microplitis pallidipes) and entomoviruses (nucleopolyhedrovirus, NPV). Specifically, we examined the discriminatory response of parasitoids to NPV-infected and non-infected herbivores in the face of rising temperatures. Over a range of increasing temperature (19, 23, 27, 31 and 35 degrees C) and two virus dosages (5.33 x10(7) and 5.33 x 10(5) OB.mL(-1)) at five different time periods (24, 48, 72, 84 and 96 h after treatment), both searching time and attacking time of parasitoids, to both NPV-infected and non-infected caterpillars, decreased with increasing temperatures. Consequently, the number of hosts attacked and the parasitism rates achieved by parasitoids increased. The percentage of first attacks by parasitoids that occurred in NPV-infected herbivores decreased with increasing temperature, with an increasing proportion of first attacks by parasitoids occurring, consequently, in uninfected caterpillars. Our study reveals that increased temperatures will make natural enemies more synergistic in the control of insect herbivores, and suggests that global warming might promote the coexistence of multiple natural enemies.

  • 相关文献

[1]Effect of nucleopolyhedrovirus infection of Spodoptera litura larvae on host discrimination by Microplitis pallidipes. Jiang, Jie-Xian,Bao, Yang-Bing,Ji, Xiang-Yun,Wan, Nian-Feng. 2014

[2]The effect of oviposition experience of adult Microplitis pallidipes parasitoids on discrimination between nucleopolyhedrovirus-infected and healthy Spodoptera litura larvae. Jiang, Jie-Xian,Ji, Xiang-Yun,Bao, Yang-Bing,Wan, Nian-Feng.

[3]Nucleopolyhedrovirus infection enhances plant defences by increasing plant volatile diversity. Wan, Nian-Feng,Huang, Kai-Hua,Ji, Xiang-Yun,Zhang, Hao,Jiang, Jie-Xian,Wan, Nian-Feng,Li, Bo,Deng, Jian-Yu. 2017

[4]The effect of nucleopolyhedrovirus infection and/or parasitism by Microplitis pallidipes on hemolymph proteins, sugars, and lipids in Spodoptera exigua larvae. Jiang, Jie-Xian,Ji, Xiang-Yun,Yin, Yang-Yi,Wan, Nian-Feng.

[5]Combined effect of nucleopolyhedrovirus and Microplitis pallidipes for the control of the beet armyworm, Spodoptera exigua. Jiang, Jiexian,Ji, Xiangyun,Wan, Nianfeng,Chen, Xiaoqin,Zeng, Aiping.

[6]Effect of host plants on the infectivity of nucleopolyhedrovirus to Spodoptera exigua larvae. Wan, N. -F.,Li, B.,Wan, N. -F.,Jiang, J. -X..

[7]The impact of co-infection by a nucleopolyhedrovirus and the endoparasitoid Microplitis pallidipes on the total hemocyte count and composition in larval beet armyworm, Spodoptera exigua. Wan, Nian-Feng,Ji, Xiang-Yun,Yin, Yang-Yi,Jiang, Jie-Xian.

[8]Nucleopolyhedrovirus infection and/or parasitism by Microplitis pallidipes Szepligeti affect hemocyte apoptosis of Spodoptera exigua (Hubner) larvae. Wan, Nian-Feng,Ji, Xiang-Yun,Zhang, Hao,Yang, Jun-Hua,Jiang, Jie-Xian.

[9]The impact of co-infection by a nucleopolyhedrovirus and the endoparasitoid Microplitis pallidipes Szepligeti on the protective enzymes in hemolymph of Spodoptera exigua. Wan, Nian-Feng,Ji, Xiang-Yun,Yin, Yang-Yi,Zhang, Hao,Jiang, Jie-Xian.

[10]Nucleopolyhedrovirus infection and/or parasitism by Microplitis pallidipes affected haemolymph titre of 20-hydroxyecdysone in Spodoptera exigua larvae. Ji, X. -Y.,Wan, N. -F.,Liu, J.,Jiang, J. -X..

[11]Prophenoloxidase encoding genes in Spodoptera exigua: molecular cloning and immune response to the challenge of nucleopolyhedrovirus and/or Microplitis pallidipes. Zhang, Hao,Ji, Xiang-Yun,Wan, Nian-Feng,Jiang, Jie-Xian.

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