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J Pest Sci (2004)

Title:		An invasive insect herbivore disrupts plant volatile-mediated tritrophic signalling
Author(s):		Martorana L; Foti MC; Rondoni G; Conti E; Colazza S; Peri E;
Address:		"Dipartimento di Scienze Agrarie, Alimentari e Forestali, Universita degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy. ISNI: 0000 0004 1762 5517. GRID: grid.10776.37 Dipartimento di Scienze Agrarie Alimentari e Ambientali, Universita degli Studi di Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy. ISNI: 0000 0004 1757 3630. GRID: grid.9027.c"
Journal Title:		J Pest Sci (2004)
Year:		2017
Volume:		20170513
Issue:		4
Page Number:		1079 - 1085
DOI:		10.1007/s10340-017-0877-5
ISSN/ISBN:		1612-4758 (Print) 1612-4766 (Electronic) 1612-4758 (Linking)
Abstract:		"Plants respond to insect attack by emission of volatile organic compounds, which recruit natural enemies of the attacking herbivore, constituting an indirect plant defence strategy. In this context, the egg parasitoid Trissolcus basalis is attracted by oviposition-induced plant volatiles emitted by Vicia faba plants as a consequence of feeding and oviposition by the pentatomid host Nezara viridula. However, this local tritrophic web could be affected by the recent invasion by the alien pentatomid bug Halyomorpha halys, an herbivore that shares the same environments as native pentatomid pests. Therefore, we investigated in laboratory conditions the possible impact of H. halys on the plant volatile-mediated signalling in the local tritrophic web V. faba-N. viridula-T. basalis. We found that T. basalis wasps were not attracted by volatiles induced in the plants by feeding and oviposition activities of H. halys, indicating specificity in the wasps' response. However, the parasitoid attraction towards plant volatiles emitted as a consequence of feeding and oviposition by the associated host was disrupted when host, N. viridula, and non-associated host, H. halys, were concurrently present on the same plant, indicating that invasion by the alien herbivore interferes with established semiochemical webs. These outcomes are discussed in a context of multiple herbivory by evaluating the possible influences of alien insects on local parasitoid foraging behaviour"
Keywords:		Halyomorpha halys Insect invasion Multiple attack Oviposition-induced plant volatiles Trissolcus basalis;
Notes:		"PubMed-not-MEDLINEMartorana, Letizia Foti, Maria Cristina Rondoni, Gabriele Conti, Eric Colazza, Stefano Peri, Ezio eng Germany 2017/08/22 J Pest Sci (2004). 2017; 90(4):1079-1085. doi: 10.1007/s10340-017-0877-5. Epub 2017 May 13"