独乐乐不如众乐乐?模拟假球菌生物防治中的行内捕食和释放时机

IF 4.3 1区 农林科学 Q1 ENTOMOLOGY
Margarita C. G. Correa, Juan Pablo Gutiérrez-Jara, Katia Vogt-Geisse, Hugo Benitez, Laura M. Pérez, Alexandre Fleisch, Thibaut Malausa, Loïc Queguiner, Sharon Rodríguez, Nicolas Ris, Philippe Kreiter
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引用次数: 0

摘要

不知名的蚧壳虫 Pseudococcus viburni 是世界上一种严重的农业害虫。在商业领域,对 P. viburni 的生物防治主要依靠天敌和寄生虫,特别是通性食茧瓢虫 Cryptolaemus montrouzieri 和专性寄生虫 Acerophagus flavidulus。不过,这两种天敌会在虫群内部形成捕食互动,从而降低生物防治的效率。如果隐翅虫只捕食健康蛤蚧和寄生蛤蚧,可能会对黄粉蚧的种群动态产生负面影响。为了改进对 P. viburni 的生物防治,在这项工作中,我们在实验室条件下研究了在没有或有不同龄期的黄粉蚧幼虫的情况下 C. montrouzieri 的取食行为。随后,我们利用所获得的数据,用数学模型模拟了黄粉蚧的动态,以研究不同的瓢虫和寄生虫种群释放田间实施计划对黄粉蚧控制的影响。瓢虫以寄生过的 P. viburni 为食,但当寄生虫的虫龄达到或超过 4 天时,瓢虫的食量就会减少。建模结果表明,捕食者的这些取食偏好可能会对害虫控制产生积极影响,同时释放捕食者和寄生虫一般比单独释放更有效,单独释放高效捕食者可能是最佳选择。建模结果还提供了有关不同释放时间表的信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Better alone than in bad company? Modeling the intra-guild predation and release timing in the biological control of Pseudococcus viburni

Better alone than in bad company? Modeling the intra-guild predation and release timing in the biological control of Pseudococcus viburni

The obscure mealybug, Pseudococcus viburni, is a serious agricultural pest worldwide. The biological control in commercial fields of P. viburni relies on predators and parasitoids, in particular the generalist coccidophagous ladybird Cryptolaemus montrouzieri and the specific parasitoid Acerophagus flavidulus. However, these two natural enemies can establish an intraguild predation interaction, reducing the efficiency of biological control. Cryptolaemus montrouzieri may negatively impact the population dynamics of A. flavidulus if it feeds indifferently on healthy and parasitized mealybugs. With the aim of improving the biological control of P. viburni, in this work, we studied the feeding behavior of C. montrouzieri in the absence or presence of A. flavidulus larvae of different age within mealybugs, in laboratory conditions. Subsequently, with the data obtained, we mathematically modeled the dynamics of P. viburni to study the impact on P. viburni control of different field implementation schedules for the release of ladybird and parasitoid populations. The ladybird fed on parasitized P. viburni but reduced its consumption when they were infested by parasitoids aged of 4 days or more. Modeling results suggest that these feeding preferences of predators may have a positive impact on pest control, that releasing predators and parasitoids together is in general more effective than releasing them independently, and that releasing highly effective predators alone could be the best choice. Modeling results also provide information on different release schedules.

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来源期刊
Journal of Pest Science
Journal of Pest Science 生物-昆虫学
CiteScore
10.40
自引率
8.30%
发文量
114
审稿时长
6-12 weeks
期刊介绍: Journal of Pest Science publishes high-quality papers on all aspects of pest science in agriculture, horticulture (including viticulture), forestry, urban pests, and stored products research, including health and safety issues. Journal of Pest Science reports on advances in control of pests and animal vectors of diseases, the biology, ethology and ecology of pests and their antagonists, and the use of other beneficial organisms in pest control. The journal covers all noxious or damaging groups of animals, including arthropods, nematodes, molluscs, and vertebrates. Journal of Pest Science devotes special attention to emerging and innovative pest control strategies, including the side effects of such approaches on non-target organisms, for example natural enemies and pollinators, and the implementation of these strategies in integrated pest management. Journal of Pest Science also publishes papers on the management of agro- and forest ecosystems where this is relevant to pest control. Papers on important methodological developments relevant for pest control will be considered as well.
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