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Aphid density and community composition differentially affect apterous aphid movement and plant virus transmission

Claflin, SB ORCID: 0000-0001-6545-946X, Power, AG and Thaler, JS 2017 , 'Aphid density and community composition differentially affect apterous aphid movement and plant virus transmission' , Ecological Entomology, vol. 42 , 245–254 , doi: 10.1111/een.12381.

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Abstract

1. Although many vector-borne pathogens are transmitted by an arrayof vector species, most studies do not account for the potential effects of speciesinteractions.2. By manipulating conspecific and heterospecific vector density in small experimentalmesocosms, this study disentangled the impact of vector density and communitycomposition on vector movement and plant virus transmission in the potato virus Ysystem.3. The following predictions were tested: (i) increasing aphid density will increaseaphid movement and virus transmission; (ii) adding low-efficiency vectors and therebydecreasing the average transmission efficiency of the vector assemblage will decreasevirus transmission; and (iii) aphid movement and the average vector transmissionefficiency will mediate the effect of aphid density and community composition on virustransmission.4. It was found that initial density positively affected aphid movement, but hadno effect on virus transmission, and that conspecific density was more importantthan heterospecific density. Conversely, community composition affected both aphidmovement and virus transmission. These effects were driven by species identity, ratherthan species richness per se.5. The results of this study emphasise the importance of accounting for vectorbehaviour, and analysing it within the context of the wider vector assemblage.

Item Type: Article
Authors/Creators:Claflin, SB and Power, AG and Thaler, JS
Keywords: Aphid movement, insect vectors, plant viruses, potato virus Y, vector community, virus transmission
Journal or Publication Title: Ecological Entomology
Publisher: Blackwell Publishing Ltd
ISSN: 0307-6946
DOI / ID Number: 10.1111/een.12381
Copyright Information:

Copyright 2017 The Royal Entomological Society

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