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Effect of starvation on the cold tolerance of adult Drosophila suzukii (Diptera: Drosophilidae)

Published online by Cambridge University Press:  24 August 2021

Madelena De Ro ,
Thomas Enriquez ,
Jochem Bonte ,
Negin Ebrahimi ,
Hans Casteels ,
Patrick De Clercq  and
Hervé Colinet Open the ORCID record for Hervé Colinet [Opens in a new window]
Madelena De Ro
Affiliation:
Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant – Crop Protection – Entomology, Burgemeester Van Gansberghelaan 96, 9820 Merelbeke, Belgium Faculty of Bioscience Engineering, Department of Plants and Crops, Ghent University, Coupure Links 653, 9000 Gent, Belgium
Thomas Enriquez
Affiliation:
University of Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)] – UMR 6553, F-35000 Rennes, France
Jochem Bonte
Affiliation:
Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant – Crop Protection – Entomology, Burgemeester Van Gansberghelaan 96, 9820 Merelbeke, Belgium
Negin Ebrahimi
Affiliation:
Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant – Crop Protection – Entomology, Burgemeester Van Gansberghelaan 96, 9820 Merelbeke, Belgium
Hans Casteels
Affiliation:
Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant – Crop Protection – Entomology, Burgemeester Van Gansberghelaan 96, 9820 Merelbeke, Belgium
Patrick De Clercq
Affiliation:
Faculty of Bioscience Engineering, Department of Plants and Crops, Ghent University, Coupure Links 653, 9000 Gent, Belgium
Hervé Colinet*
Affiliation:
University of Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)] – UMR 6553, F-35000 Rennes, France
*
Author for correspondence: Hervé Colinet, Email: herve.colinet@univ-rennes1.fr
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Abstract

The spotted wing drosophila, Drosophila suzukii, is an invasive pest in Europe and North America. Access to resources may be challenging in late fall, winter and early spring and flies may suffer from food deprivation along with cold stress in these periods. Whereas a plethora of studies have been performed on the overwintering capacity of D. suzukii, the effects of starvation on the fly's cold tolerance have not been addressed. In the present study, young D. suzukii adults (reared at 25°C, LD 12:12 h) were deprived of food for various periods (0, 12, 24 and 36 h), after which chill coma recovery time, critical thermal minimum, as well as acute and chronic cold tolerance were assessed. Additionally, the body composition of adults (body mass, water content, total lipid, glycerol, triglycerides, glucose and proteins) before and after starvation periods was analysed to confirm that starvation had detectable effects. Starved adults had a lower body mass, and both lipid and carbohydrate levels decreased with starvation time. Starvation slightly increased critical thermal minimum and affected chill coma recovery time; however, these changes were not gradual with starvation duration. Starvation promoted acute cold tolerance in both sexes. This effect appeared faster in males than in females. Food deprivation also led to enhanced survival to chronic cold stress. Short-term starvation was thus associated with significant changes in body composition in D. suzukii, and these alterations could alter some ecologically relevant traits related to cold tolerance, particularly in females. Our results suggest that food deprivation during short time (<36 h) can promote cold tolerance (especially survival after a cold stress) of D. suzukii flies. Future studies should address the ecological significance of these findings as short food deprivation may occur in the fields on many occasions and seasons.

Keywords

Body compositioncold hardinessenergy reservesfood deprivationspotted wing drosophila

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Type
Research Paper
Information
Bulletin of Entomological Research , Volume 111 , Issue 6 , December 2021 , pp. 694 - 704
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Copyright © The Author(s), 2021. Published by Cambridge University Press

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