Post-acquisition effects of viruses on vector behavior are important components of manipulation strategies
- 1 November 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Oecologia
- Vol. 194 (3), 429-440
- https://doi.org/10.1007/s00442-020-04763-0
Abstract
A growing number of studies suggest that plant viruses manipulate host plant phenotypes to increase transmission-conducive behaviors by vectors. Studies on this phenomenon frequently omit examination of interactions that occur after vectors acquire virions, which provides an incomplete understanding of the ecology of plant virus manipulation. Here, by taking a full factorial approach that considered both the infection status of the host (Montia perfoliata) and viruliferous status of the aphid (Myzus persicae), we explored the effects of a circulative, non-propagative virus (Turnip yellows virus[TuYV]) on a suite of behavior and performance metrics that are relevant for virus transmission. Our results demonstrate that viruliferous aphids exhibited an increased velocity of movement and increased activity levels in locomotor and dispersal-retention assays. They also had increased fecundity and showed a capacity to more efficiently exploit resources by taking less time to reach the phloem and ingesting more sap, regardless of plant infection status. In contrast, non-viruliferous aphids only exhibited enhanced fecundity and biomass on TuYV-infected hosts, and had overall reduced dispersal and locomotor activity relative to viruliferous aphids. In this pathosystem, post-acquisition effects were stronger and more conducive to virus transmission than the purely pre-acquisition effects mediated by virus effects on the host plant. Our study provides additional support for the hypothesis that virus manipulation of vector behavior includes both pre- and post-acquisition effects and demonstrates the importance of considering both components when studying putative virus manipulation strategies.Funding Information
- Agence Nationale de la Recherche (VIRAPHIPLANT ANR-14- CE19-0010-01)
- Hatch Project (CA-R-ENT-5144-H)
This publication has 53 references indexed in Scilit:
- A Plant Virus Manipulates the Behavior of Its Whitefly Vector to Enhance Its Transmission Efficiency and SpreadPLOS ONE, 2013
- Plant viruses alter insect behavior to enhance their spreadScientific Reports, 2012
- Infection with a plant virus modifies vector feeding behaviorProceedings of the National Academy of Sciences of the United States of America, 2011
- Dengue Infection Increases the Locomotor Activity of Aedes aegypti FemalesPLOS ONE, 2011
- Deceptive chemical signals induced by a plant virus attract insect vectors to inferior hostsProceedings of the National Academy of Sciences of the United States of America, 2010
- Behavioural aspects influencing plant virus transmission by homopteran insectsVirus Research, 2009
- Variation in Tomato spotted wilt virus Titer in Frankliniella occidentalis and Its Association with Frequency of TransmissionPhytopathology®, 2009
- The ecological significance of manipulative parasitesTrends in Ecology & Evolution, 2008
- Testing the Physiological Barriers to Viral Transmission in Aphids Using MicroinjectionJournal of Visualized Experiments, 2008
- Characteristics of the Microplate Method of Enzyme-Linked Immunosorbent Assay for the Detection of Plant VirusesJournal of General Virology, 1977