An updated and validated model for predicting the performance of a biological control agent for the oriental migratory locust

文献类型： 外文期刊

第一作者： Finch, Elizabeth A.

作者： Finch, Elizabeth A.;Beeken, Joe;Luke, Belinda;Li, Hongmei;Li, Hongmei;Cornelius, Alex;Styles, Jon;Cheng, Yumeng;Wang, Guangjun;Qiu, Guiguang;Finch, Elizabeth A.;Li, Hongmei

作者机构：

关键词： body temperature model; crop temperature; Metarhizium anisopliae; biopesticide; biocontrol; Locusta migratoria manilensis

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.1； 五年影响因子：4.4 ）

ISSN： 1526-498X

年卷期： 2023 年

页码：

收录情况： SCI

摘要： BACKGROUND The oriental migratory locust is a major crop pest across eastern and south-eastern Asia. Metarhizium anisopliae is an effective biopesticide agent used for locust control, but its performance is temperature dependent, and thus can be more variable than chemical pesticide performance. To predict biopesticide performance for the control of the oriental migratory locust, we adapted a previous temperature-dependent model and validated it using field trial data. To increase the applicability of this model, we explored the use of readily available temperature variables, as well as our own satellite-derived canopy temperature variable, to run the model.RESULTS Compared to collected in situ temperature data, our canopy temperature variable most accurately represented the ambient temperature experienced by the locust. When the biopesticide performance model was run using this canopy temperature and compared to field trials results, the model predictions were more accurate than when the model was run with the other temperature variables. The accuracy of the biopesticide performance model was impacted by vegetation cover, but across the areas most associated with locust oviposition, growth and migration, the model predictions were satisfactorily accurate to guide biopesticide operational use.CONCLUSION We validated the model in six provinces in China, representing the three agro-ecological zones largely representative of the oriental migratory locust problem areas in China, Thailand, Cambodia and Vietnam. Whilst further validation work is needed, this model could be used in these countries to assess, at a fine spatial scale, the appropriateness of M. anisopliae for controlling the oriental migratory locust.

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