Niassy, S, Tamiru, A, Hamilton, JGC, Kirk, WDJ, Mumm, R, Sims, C, de Kogel, WJ, Ekesi, S, Maniania, NK, Bandi, K, Mitchell, F and Subramanian, S (2019) Characterization of Male-Produced Aggregation Pheromone of the Bean Flower Thrips Megalurothrips sjostedti (Thysanoptera: Thripidae). Journal of Chemical Ecology, 45 (4). pp. 348-355. ISSN 1573-1561

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Aggregation of the bean flower thrips, Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), has been observed on cowpea, Vigna unguiculata (L.) Walp. To understand the mechanism underpinning this behavior, we studied the responses of M. sjostedti to headspace volatiles from conspecifics in a four-arm olfactometer. Both male and female M. sjostedti were attracted to male, but not to female odor. Gas chromatography/mass spectrometry (GC/MS) analyses revealed the presence of two distinct compounds in male M. sjostedti headspace, namely (R)-lavandulyl 3-methylbutanoate (major compound) and (R)-lavandulol (minor compound); by contrast, both compounds were only present in trace amounts in female headspace collections. A behavioral assay using synthetic compounds showed that male M. sjostedti was attracted to both (R)-lavandulyl 3-methylbutanoate and (R)-lavandulol, while females responded only to (R)-lavandulyl 3-methylbutanoate. This is the first report of a male-produced aggregation pheromone in the genus Megalurothrips. The bean flower thrips is the primary pest of cowpea, which is widely grown in sub-Saharan Africa. The attraction of male and female M. sjostedti to these compounds offers an opportunity to develop ecologically sustainable management methods for M. sjostedti in Africa.

Item Type: Article
Additional Information: This is the final published version of the article (version of record). It first appeared online via Springer at - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: Thrips pheromone, Megalurothrips sjostedti, Grain legumes, Olfactometer bioassay, Headspace analysis
Divisions: Faculty of Natural Sciences > School of Life Sciences
Depositing User: Symplectic
Date Deposited: 21 Feb 2019 13:46
Last Modified: 03 Jun 2019 09:36

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