The wasp is a worldwide parasitic natural enemy of leafminer pests with a wide range of temperature adaptation and high temperature resistance. In the face of climate change, the green control of the important high-temperature invasive spotted diver fly American spotted fly and clover spotted fly, as well as the characteristics of the most dominant parasitic wasp in the field of the mainland vegetable leafminer pest, it is necessary to study and evaluate the control effect of the leafminer wasp on the leafminer pest in the high temperature environment, thus providing a reference for the field regulation and release application of the parasitic bee.
Recently, a research group by researcher Liu Wanxue of the Institute of Plant Protection of the Chinese Academy of Agricultural Sciences completed a project entitled "High temperatures do not decrease biocontrol potential for the host-killing parasitoid Neochrysocharis formosa (Hymenoptera: Eulophidae) on agromyzid Leafminers" research paper was published in journal of Integrative Agriculture (JIA), No. 6, 2022.
Based on the comparative analysis of the control potential parameters such as adult lifespan and host lethality of female wasps in different high temperature environments, it was found that with the increase of temperature, the life of the bee decreased, but the control potential was not significantly reduced.
The Fushinji wasp is one of the dominant parasitic wasps for leafminer pests in the field, with three pest control behaviors, namely the breeding egg-laying parasitic death-causing host larvae and the non-reproductive host feeding on the deadly host larvae and the host sting directly killing the host larvae. Typically, temperature as an important external environmental factor influences the behavioral and life history characteristics of parasitic wasps.
In this study, the adult life history parameters of the female wasp on the control effect of leafminer flies under four high temperature environments (26, 29, 32, 35 °C) were compared and analyzed: adult lifespan, host lethal parameters (including spawn parasitism, host feeding and direct death), and the number of host feeding and other life history parameters (such as lifespan, spawn parasitism, direct fatality and non-reproductive host death) were compared and analyzed, and the results showed that the parasitic wasps were at 29°C The potential for sub-pest control is greatest; the lifespan of female adults decreases with the increase of temperature, but the high temperature significantly enhances the non-reproductive daily host lethality of parasitic wasps, resulting in high temperature not reducing its potential for pest control; in addition, with the change of temperature, the number of female hosts feeding is linearly related to other life history parameters.
The results of this study contribute to a better understanding of the control effect of the dominant parasitic wasp-Fushinji wasp on leafminer flies, especially the important invasive spotted divers and trilobites, during high temperature seasons or environments.
Associate Researcher Guo Jianyang and Researcher Liu Wanxue of the Institute of Plant Protection, Chinese Academy of Agricultural Sciences, are co-corresponding authors of the article, and doctoral student Xuan Jingli is the first author, which was funded by the National Natural Science Foundation of China (31772236), the Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences (caascx-2017–2022-IAS), and the National Scholarship Council (201807990002).
Click on the link to read the full article:
https://doi.org/10.1016/S2095-3119(21)63727-9
Cite the article:
XUAN Jing-li, XIAO Yue, YE Fu-yu, ZHANG Yi-bo, TAO Shu-xia, GUO Jian-yang, LIU Wan-xue. 2022. High temperatures do not decrease biocontrol potential for the host-killing parasitoid Neochrysocharis formosa (Hymenoptera: Eulophidae) on agromyzid leafminers. Journal of Integrative Agriculture, 21(6): 1722–1730.
Journal of Integrative Agriculture (Journal of Agricultural Sciences, JIA) is under the supervision of the Ministry of Agriculture and Rural Affairs of the People's Republic of China, hosted by the Chinese Academy of Agricultural Sciences and the Chinese Agricultural Society, and hosted by the Institute of Agricultural Information of the Chinese Academy of Agricultural Sciences. Comprehensive English academic journal, monthly. Founded in 2002, the editor-in-chief is Wang Hanzhong, academician of the Chinese Academy of Engineering and vice president of the Chinese Academy of Agricultural Sciences. JIA's main columns include crop science, horticulture, plant protection, animal science, animal medicine, resources and environment, food science, agricultural economics and management, etc., and the types of publications include reviews, research papers, briefings and reviews. All papers were published on the Elsevier-ScienceDirect (SD) platform OA. The latest SCI impact factor of 2.848 is located in the Q1 area of SCI-JCR Comprehensive Agricultural Discipline and the second area of agricultural and forestry journals of the Chinese Academy of Sciences. Since 2016, it has been supported by the "Upgrading Plan", "Ascending Plan" and "Excellence Plan" projects of the China Association for Science and Technology and other ministries and commissions.