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Fruit and microbial cues in the behavioural ecology and management of Drosophila suzukii

Rehermann Del Rio, Guillermo (2022). Fruit and microbial cues in the behavioural ecology and management of Drosophila suzukii. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-939-1
eISBN 978-91-7760-940-7
[Doctoral thesis]

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Investigating the factors that determine the behaviour of new pests is essential for understanding, predicting and managing their impact on natural and agricultural ecosystems. The spotted wing drosophila (SWD), Drosophila suzukii (Matsumura; Diptera: Drosophilidae), is a worldwide spreading polyphagous pest of soft fruit and berries. Drosophila suzukii is capable to oviposit and develop in ripening fruit, which represents an ecological host shift relative to Drosophila species that prefer overripe fruit. Notably, D. suzukii lives in close association with yeasts, like saprophagous Drosophila flies, but the ecological relevance of this association is insufficiently understood. Chemical cues are important when D. suzukii exploits fruit as a niche. Chemosensory adaptations allow D. suzukii to detect chemical cues emitted by ripening and overripe host fruits. Host attraction, consequently, is odour-guided and precedes egg-laying and exploitation of fruit as the larval niche. However, it is not clear to which extent fruit ripeness, presence of yeast, or sex and mating state of the flies, modulate attraction and host choice. This thesis demonstrates: (i) D. suzukii host choice is modulated by fruit ripeness and fly mating, (ii) a reciprocal niche construction and mutualistic interaction between D. suzukii and the yeast Hanseniaspora uvarum (Niehaus; Ascomycota: Saccharomyceta) on fresh fruit, (iii) the D. suzukii-H. uvarum association can be exploited for the development of lures to monitor and control the invasive pest. The collective findings advance our fundamental understanding of D. suzukii host choice decisions and niche construction. This understanding is of relevance for the development of new pest management tools such as manipulation of insect behaviour.

Authors/Creators:Rehermann Del Rio, Guillermo
Title:Fruit and microbial cues in the behavioural ecology and management of Drosophila suzukii
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number of Pages:62
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-939-1
ISBN for electronic version:978-91-7760-940-7
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:fruit-insect-microbe interaction, spotted wing drosophila, yeast, chemical ecology, olfaction, behavioural plasticity, behavioural manipulation, integrated pest management
Permanent URL:
ID Code:27595
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:22 Apr 2022 12:25
Metadata Last Modified:06 May 2022 23:30

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