Behavioural and physiological responses of whitefly, Bemisia tabaci, to virus infection in cassava (Manihot esculenta)

IF 1.7 3区农林科学 Q2 ENTOMOLOGY

Entomologia Experimentalis et Applicata Pub Date : 2025-07-04 DOI:10.1111/eea.13610

E. R. Harish, Mani Chellappan, T. Makesh Kumar, Deepu Mathew, Eldho Varghese

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Abstract

Mosaic disease, caused by Cassava mosaic virus and transmitted by cassava whitefly, Bemisia tabaci (Gennadius; Hemiptera: Aleyrodidae), is the main threat to cassava production. Various genotypes with various degrees of resistance were employed to study the interactions between the whitefly and virus. These interactions included dispersal, feeding, fecundity, adult longevity and the life cycle. Virus acquisition in whiteflies altered their dispersal and settling behaviour. For the non-viruliferous whiteflies that fed on resistant cassava genotypes, the speed of movement between leaves was higher compared to the viruliferous ones that fed on susceptible genotypes. Viruliferous whiteflies on susceptible genotypes fed more efficiently compared to non-viruliferous ones on resistant genotypes, but fecundity was lowest in viruliferous whiteflies on resistant genotypes. The presence of virus in the system reduced adult longevity but extended the total life cycle. This study provides insights into how the virus modulates the behaviour and physiology/biology of the vector for enhanced transmissibility.

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烟粉虱对木薯病毒感染的行为和生理反应

木薯花叶病是木薯生产的主要威胁，由木薯花叶病毒引起，由木薯粉虱——烟粉虱（属目；半翅目：粉虱科）传播。采用不同抗性程度的基因型研究了白蝇与病毒的相互作用。这些相互作用包括扩散、取食、繁殖力、成虫寿命和生命周期。病毒在白蛉体内的获得改变了它们的传播和定居行为。以抗性木薯基因型为食的非毒粉虱在叶片间的移动速度高于以敏感基因型为食的毒粉虱。易感基因型的毒粉虱取食效率高于抗性基因型的非毒粉虱，但抗性基因型的毒粉虱繁殖力最低。系统中病毒的存在降低了成虫寿命，但延长了整个生命周期。这项研究提供了关于病毒如何调节媒介的行为和生理/生物学以增强传播性的见解。

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来源期刊

Entomologia Experimentalis et Applicata 生物-昆虫学

CiteScore

3.90

自引率

5.30%

发文量

138

审稿时长

4-8 weeks

期刊介绍： Entomologia Experimentalis et Applicata publishes top quality original research papers in the fields of experimental biology and ecology of insects and other terrestrial arthropods, with both pure and applied scopes. Mini-reviews, technical notes and media reviews are also published. Although the scope of the journal covers the entire scientific field of entomology, it has established itself as the preferred medium for the communication of results in the areas of the physiological, ecological, and morphological inter-relations between phytophagous arthropods and their food plants, their parasitoids, predators, and pathogens. Examples of specific areas that are covered frequently are: host-plant selection mechanisms chemical and sensory ecology and infochemicals parasitoid-host interactions behavioural ecology biosystematics (co-)evolution migration and dispersal population modelling sampling strategies developmental and behavioural responses to photoperiod and temperature nutrition natural and transgenic plant resistance.