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3 June 2019 Oviposition Preference and Larval Performance of Drosophila suzukii (Diptera: Drosophilidae), Spotted-Wing Drosophila: Effects of Fruit Identity and Composition
Laure Olazcuaga, Nicolas O. Rode, Julien Foucaud, Benoit Facon, Virginie Ravigné, Aurélien Ausset, Nicolas Leménager, Anne Loiseau, Mathieu Gautier, Arnaud Estoup, Ruth A. Hufbauer
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Abstract

A better understanding of the factors affecting host plant use by spotted-wing drosophila (Drosophila suzukii) could aid in the development of efficient management tools and practices to control this pest. Here, proxies of both preference (maternal oviposition behavior) and performance (adult emergence) were evaluated for 12 different fruits in the form of purees.The effect of the chemical composition of the fruits on preference and performance traits was then estimated. We synthesized the literature to interpret our findings in the light of previous studies that measured oviposition preference and larval performance of D. suzukii. We show that fruit identity influences different parts of the life cycle, including oviposition preference under both choice and no-choice conditions, emergence rate, development time, and number of emerging adults. Blackcurrant was always among the most preferred fruit we used, while grape and tomato were the least preferred fruits. Larvae performed better in cranberry, raspberry, strawberry, and cherry than in the other fruits tested. We found that fruit chemical compounds can explain part of the effect of fruit on D. suzukii traits. In particular, oviposition preference under choice conditions was strongly influenced by fruit phosphorus content. In general, the consensus across studies is that raspberry, blackberry, and strawberry are among the best hosts while blackcurrant, grape and rose hips are poor hosts. Our results generally confirm this view but also suggest that oviposition preferences do not necessarily match larval performances. We discuss opportunities to use our results to develop new approaches for pest management.

© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Laure Olazcuaga, Nicolas O. Rode, Julien Foucaud, Benoit Facon, Virginie Ravigné, Aurélien Ausset, Nicolas Leménager, Anne Loiseau, Mathieu Gautier, Arnaud Estoup, and Ruth A. Hufbauer "Oviposition Preference and Larval Performance of Drosophila suzukii (Diptera: Drosophilidae), Spotted-Wing Drosophila: Effects of Fruit Identity and Composition," Environmental Entomology 48(4), 867-881, (3 June 2019). https://doi.org/10.1093/ee/nvz062
Received: 17 January 2019; Accepted: 2 May 2019; Published: 3 June 2019
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KEYWORDS
chemical composition
compound
host use
mother knows best hypothesis
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