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J Chem Ecol

Title:		The Pupal Parasitoid Trichopria drosophilae Is Attracted to the Same Yeast Volatiles as Its Adult Host
Author(s):		Durovic G; Van Neerbos FAC; Bossaert S; Herrera-Malaver B; Steensels J; Arno J; Wackers F; Sobhy IS; Verstrepen KJ; Jacquemyn H; Lievens B;
Address:		"CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), Department M2S, KU Leuven, B-3001, Leuven, Belgium. Leuven Plant Institute (LPI), KU Leuven, B-3001, Leuven, Belgium. Research and Innovation Centre, Fondazione Edmund Mach, 38098, San Michele all'Adige, Italy. Biobest, B-2260, Westerlo, Belgium. CMPG Laboratory of Genetics and Genomics, Department M2S, KU Leuven, B-3001, Leuven, Belgium. Flanders Institute for Biotechnology (VIB), KU Leuven Center for Microbiology, B-3001, Leuven, Belgium. IRTA, 08348, Cabrils, Barcelona, Spain. Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK. Department of Plant Protection, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt. Laboratory of Plant Conservation and Population Biology, Biology Department, KU Leuven, B-3001, Leuven, Belgium. CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), Department M2S, KU Leuven, B-3001, Leuven, Belgium. bart.lievens@kuleuven.be. Leuven Plant Institute (LPI), KU Leuven, B-3001, Leuven, Belgium. bart.lievens@kuleuven.be"
Journal Title:		J Chem Ecol
Year:		2021
Volume:		20210716
Issue:		8-Sep
Page Number:		788 - 798
DOI:		10.1007/s10886-021-01295-6
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"There is increasing evidence that microorganisms, particularly fungi and bacteria, emit volatile compounds that mediate the foraging behaviour of insects and therefore have the potential to affect key ecological relationships. However, to what extent microbial volatiles affect the olfactory response of insects across different trophic levels remains unclear. Adult parasitoids use a variety of chemical stimuli to locate potential hosts, including those emitted by the host's habitat, the host itself, and microorganisms associated with the host. Given the great capacity of parasitoids to utilize and learn odours to increase foraging success, parasitoids of eggs, larvae, or pupae may respond to the same volatiles the adult stage of their hosts use when locating their resources, but compelling evidence is still scarce. In this study, using Saccharomyces cerevisiae we show that Trichopria drosophilae, a pupal parasitoid of Drosophila species, is attracted to the same yeast volatiles as their hosts in the adult stage, i.e. acetate esters. Parasitoids significantly preferred the odour of S. cerevisiae over the blank medium in a Y-tube olfactometer. Deletion of the yeast ATF1 gene, encoding a key acetate ester synthase, decreased attraction of T. drosophilae, while the addition of synthetic acetate esters to the fermentation medium restored parasitoid attraction. Bioassays with individual compounds revealed that the esters alone were not as attractive as the volatile blend of S. cerevisiae, suggesting that other volatile compounds also contribute to the attraction of T. drosophilae. Altogether, our results indicate that pupal parasitoids respond to the same volatiles as the adult stage of their hosts, which may aid them in locating oviposition sites"
Keywords:		"Animals Behavior, Animal/drug effects Esters/chemistry/metabolism/pharmacology Host-Parasite Interactions/drug effects Hymenoptera/growth & development/*physiology Principal Component Analysis Proteins/genetics/metabolism Pupa/drug effects/physiology Sacc;"
Notes:		"MedlineDurovic, Gordana Van Neerbos, Francine A C Bossaert, Sofie Herrera-Malaver, Beatriz Steensels, Jan Arno, Judit Wackers, Felix Sobhy, Islam S Verstrepen, Kevin J Jacquemyn, Hans Lievens, Bart eng 722642 (INTERFUTURE)/Horizon 2020 Framework Programme/ PID2019-107030RB-C21/CERCA Programme/ 2021/07/17 J Chem Ecol. 2021 Sep; 47(8-9):788-798. doi: 10.1007/s10886-021-01295-6. Epub 2021 Jul 16"