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. 2018;91(2):651-660.
doi: 10.1007/s10340-017-0932-2. Epub 2017 Nov 3.

Dietary yeast affects preference and performance in Drosophila suzukii

Nathalie Bellutti  1   2 , Andreas Gallmetzer  1 , Gerd Innerebner  1 , Silvia Schmidt  1 , Roland Zelger  1 , Elisabeth Helene Koschier  2
Affiliations

Dietary yeast affects preference and performance in Drosophila suzukii

Nathalie Bellutti et al. J Pest Sci (2004). 2018.

Abstract

Yeasts play an important role in nutrition physiology and host attraction of many Drosophila species, and associations with various yeast species are documented for several drosophilid flies. The pest Drosophila suzukii (Matsumura) has a predominant association with the yeast Hanseniaspora uvarum. However, research has not been conducted on the nutritional physiology of the yeasts associated with D. suzukii (spotted wing drosophila). Therefore, in this study, we determined whether dietary yeast was nutritionally relevant and whether yeast species closely associated with D. suzukii positively affected life-history traits. Our results confirm a crucial role of dietary yeast in the larval development and survival of D. suzukii. Furthermore, we found specific effects of the closely associated yeast species H. uvarum and Candida sp. on larval survival. Observations of the egg-laying behaviour of D. suzukii on cherry fruits artificially colonised with different yeast species revealed that the number of eggs laid increased on fruits colonised with Candida sp. and Saccharomyces cerevisiae.

Keywords: Egg-laying behaviour; Hanseniaspora uvarum; Life history; Saccharomyces cerevisiae; Spotted wing drosophila.

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Conflict of interest statement

Compliance with ethical standardsThe authors declare that they have no conflict of interest.All applicable international, national and institutional guidelines for the care and use of animals were followed.

Figures

Fig. 1
Fig. 1
Development of D. suzukii on different diet treatments. Development time (mean number of days ± S.E.) of larvae (dark dots, n = 9) and pupae (white triangles, n = 9) from the laboratory population. No larvae survived on DSCD(c) in the absence of S. cerevisiae. Means followed by the same letter (lower case for larvae, upper case for pupae) are not significantly different (development larvae: one-way ANOVA, Tukey’s HSD, p < 0.05; development pupae: Kruskal–Wallis test, p < 0.05)
Fig. 2
Fig. 2
Development of D. suzukii on minimal nutrient diet supplemented with aliquots of different yeast species. Development time (mean number of days ± S.E.) of larvae (dark dots, n = 3) and pupae (white triangles, n = 3). Means followed by the same letter (lower case for larvae, upper case for pupae) are not significantly different (development larvae: one-way ANOVA, Tukey’s HSD, p > 0.05; development pupae: Kruskal–Wallis test, p < 0.05)
Fig. 3
Fig. 3
Oviposition of D. suzukii females on cherry fruits inoculated with different yeast species. Mean number of eggs/fruit/day (± S.E.) laid by females from a the laboratory (n = 49) and b the wild (n = 56) population within three consecutive test intervals. The same yeast species was used to feed the females and to stimulate oviposition on the cherry fruits. Means of the test intervals in the different treatments followed by the same letter are not significantly different (Tukey’s HSD, p > 0.05)
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