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Title of Journal: J Chem Ecol

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Abbravation: Journal of Chemical Ecology

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Springer US

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DOI

10.1007/bf00823303

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1573-1561

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Altered Volatile Profile Associated with Precopula

Authors: Keiko Oku Berhane T Weldegergis Erik H Poelman Peter W De Jong Marcel Dicke
Publish Date: 2015/01/23
Volume: 41, Issue: 2, Pages: 187-193
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Abstract

Proximate factors affecting animal behavior include stimuli generated by conspecifics In spider mites of the genus Tetranychus Acari Tetranychidae males guard prereproductive quiescent females because only the first mating results in fertilization In a dualchoice experiment more adult males of T urticae were attracted to females guarded by a male than to solitary females Because spider mites are known to perceive volatiles we hypothesized that guarded and solitary females differ in the volatile blends emitted To test this hypothesis headspace volatiles of guarded females solitary females and solitary males were collected respectively GC/MS analysis detected octanal methyl salicylate ethyl 4ethoxybenzoate and methyl cisdihydrojasmonate in all of the groups Orthogonal Projection to Latent Structures Discriminant Analysis OPLSDA of the blends clearly discriminated guarded females from solitary females supporting our hypothesis Individual compounds did not show significant difference in emission rates for guarded females vs solitary females suggesting that differences lay in the total blend composition OPLSDA did not discriminate between the blends emitted by guarded females and solitary males In conclusion the differences in the volatile blends are likely to mediate male discrimination between guarded and solitary femalesWe thank Léon Westerd André Gidding Joop Woelke and Frans van Aggelen of Wageningen University for rearing mites and plants Nina Fatouros of Wageningen University for encouragement to conduct headspace volatile collections Dani LucasBarbosa and Feng Zhu of Wageningen University for kind advice related to headspace volatile collections and the data analysis Tom Price and Zenobia Lewis of University of Liverpool for constructive advice to improve this manuscript and two anonymous reviewers for valuable comments This study is supported partly by a grant from the Japan Society for the Promotion of Science for Young Scientists for Research Abroad to KO


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