Modeling insect growth regulators for pest management

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Yijun Lou, Ruiwen Wu
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引用次数: 0

Abstract

Insect growth regulators (IGRs) have been developed as effective control measures against harmful insect pests to disrupt their normal development. This study is to propose a mathematical model to evaluate the cost-effectiveness of IGRs for pest management. The key features of the model include the temperature-dependent growth of insects and realistic impulsive IGRs releasing strategies. The impulsive releases are carefully modeled by counting the number of implements during an insect’s temperature-dependent development duration, which introduces a surviving probability determined by a product of terms corresponding to each release. Dynamical behavior of the model is illustrated through dynamical system analysis and a threshold-type result is established in terms of the net reproduction number. Further numerical simulations are performed to quantitatively evaluate the effectiveness of IGRs to control populations of harmful insect pests. It is interesting to observe that the time-changing environment plays an important role in determining an optimal pest control scheme with appropriate release frequencies and time instants.

Abstract Image

昆虫生长调节剂模型用于害虫管理
昆虫生长调节剂(IGRs)是针对有害害虫的有效控制措施,可以破坏害虫的正常生长发育。本研究提出了一个数学模型,用于评估 IGRs 在害虫管理方面的成本效益。该模型的主要特点包括昆虫的生长与温度有关,以及逼真的脉冲式 IGRs 释放策略。通过计算昆虫在随温度变化的生长过程中的释放次数,对脉冲释放进行了仔细建模,从而引入了由每次释放相应项的乘积决定的存活概率。该模型的动态行为通过动态系统分析加以说明,并根据净繁殖数量确定了阈值型结果。通过进一步的数值模拟,对 IGRs 控制有害害虫种群的效果进行了定量评估。值得注意的是,在确定具有适当释放频率和释放时间的最佳害虫控制方案时,时间变化的环境起着重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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