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Insects

Title:		Oviposition-Induced Volatiles Affect Electrophysiological and Behavioral Responses of Egg Parasitoids
Author(s):		Milonas PG; Anastasaki E; Partsinevelos G;
Address:		"Laboratory of Biological Control, Department of Entomology & Agricultural Zoology, Benaki Phytopathological Institute, 8 S. Delta Street, 14561 Kifissia, Greece"
Journal Title:		Insects
Year:		2019
Volume:		20191205
Issue:		12
Page Number:		-
DOI:		10.3390/insects10120437
ISSN/ISBN:		2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking)
Abstract:		"In response to an attack by herbivores, plants emit a variety of compounds that may act as semiochemicals. Oviposition-induced volatiles (OIPVs) have been shown to mediate interactions between plants and natural enemies. Here, we investigated the role of OIPVs by Tuta absoluta towards two egg parasitoids, Trichogramma cordubense and T. achaeae. We collected headspace volatiles from tomato plants at 24, 48, and 72 h after oviposition by T. absoluta females and tested the antennographic response of Trichogramma parasitoids to them by means of gas chromatography- electro-antennographical detection (GC-EAD). The response of the parasitoids was also tested in behavioral experiments using a Y-tube olfactometer. Oviposition by T. absoluta females induced qualitative and quantitative changes in the volatiles emitted by tomato plants. Antennae of Trichogramma parasitoids responded to several of the induced volatiles in GC-EAD. T. cordubense females were attracted to tomato plants with T. absoluta eggs 24 h after oviposition. The elucidation of the behavior of egg parasitoids towards OIPVs enhances the development of sustainable management strategies either by selecting species that exploit OIPVs or by manipulating their foraging behavior by utilizing specific OIPVs that are used by parasitoids as a host location"
Keywords:		Trichogramma olfactometer tomato leafminer;
Notes:		"PubMed-not-MEDLINEMilonas, Panagiotis G Anastasaki, Eirini Partsinevelos, Georgios eng 4141/General Secretariat for Research and Technology/ Switzerland 2019/12/11 Insects. 2019 Dec 5; 10(12):437. doi: 10.3390/insects10120437"