« Previous AbstractCharacterization of novel varietal floral hop aromas by headspace solid phase microextraction and gas chromatography-mass spectrometry/olfactometry    Next AbstractConserved class of queen pheromones stops social insect workers from reproducing »

Ecol Evol

Title:		Infochemical use and dietary specialization in parasitoids: a meta-analysis
Author(s):		van Oudenhove L; Mailleret L; Fauvergue X;
Address:		Universite Cote d'Azur INRA CNRS ISA Sophia Antipolis France. Universite Cote d'Azur INRIA INRA CNRS UPMC Univ. Paris 06 Sophia Antipolis France
Journal Title:		Ecol Evol
Year:		2017
Volume:		20170525
Issue:		13
Page Number:		4804 - 4811
DOI:		10.1002/ece3.2888
ISSN/ISBN:		2045-7758 (Print) 2045-7758 (Electronic) 2045-7758 (Linking)
Abstract:		"Many parasitoid species use olfactory cues to locate their hosts. In tritrophic systems, parasitoids of herbivores can exploit the chemical blends emitted by plants in reaction to herbivore-induced damage, known as herbivore-induced plant volatiles (HIPVs). In this study, we explored the specificity and innateness of parasitoid responses to HIPVs using a meta-analysis of data from the literature. Based on the concept of dietary specialization and infochemical use, we hypothesized that (i) specialist parasitoids (i.e., with narrow host ranges) should be attracted to specific HIPV signals, whereas generalist parasitoids (i.e., with broad host ranges) should be attracted to more generic HIPV signals and (ii) specialist parasitoids should innately respond to HIPVs, whereas generalist parasitoids should have to learn to associate HIPVs with host presence. We characterized the responses of 66 parasitoid species based on published studies of parasitoid behavior. Our meta-analysis showed that (i) as predicted, specialist parasitoids were attracted to more specific signals than were generalist parasitoids but, (ii) contrary to expectations, response innateness depended on a parasitoid's target host life stage rather than on its degree of host specialization: parasitoids of larvae were more likely to show an innate response to HIPVs than were parasitoids of adults. This result changes our understanding of dietary specialization and highlights the need for further theoretical research that will help clarify infochemical use by parasitoids"
Keywords:		dietary breadth foraging behavior herbivore-induced plant volatiles information use parasitoid tritrophic interactions;
Notes:		"PubMed-not-MEDLINEvan Oudenhove, Louise Mailleret, Ludovic Fauvergue, Xavier eng England 2017/07/12 Ecol Evol. 2017 May 25; 7(13):4804-4811. doi: 10.1002/ece3.2888. eCollection 2017 Jul"