Characterization of Male-Produced Aggregation Pheromone of the Bean Flower Thrips Megalurothrips sjostedti (Thysanoptera: Thripidae)

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...

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Bibliographic Details
Published in:	Journal of chemical ecology Vol. 45; no. 4; pp. 348 - 355
Main Authors:	Niassy, Saliou, Tamiru, Amanuel, Hamilton, James G. C., Kirk, William D. J., Mumm, Roland, Sims, Cassie, de Kogel, Willem Jan, Ekesi, Sunday, Maniania, Nguya K., Bandi, Krishnakumari, Mitchell, Fraser, Subramanian, Sevgan
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-04-2019 Springer Nature B.V
Subjects:	Agglomeration Aggregation pheromone Agriculture Biochemistry Biointeractions and Plant Health Biological Microscopy Biomedical and Life Sciences BIOS Applied Metabolic Systems Conspecifics Cowpeas Ecology Entomology Females Flowers Gas chromatography Headspace Headspace volatiles Life Sciences Management methods Mass spectrometry Mass spectroscopy Megalurothrips sjostedti Odor PPO/PRI Biointeracties en plantgezondheid PPO/PRI Biointeractions and Plant Health PRI BIOS Applied Metabolic Systems Sustainability management Thripidae Thysanoptera Vigna unguiculata Volatile compounds Volatiles Africa Olfactometer bioassay Grain legumes Headspace analysis Thrips pheromone Megalurothrips sjostedti
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0098-0331 1573-1561
DOI:	10.1007/s10886-019-01054-8