Journal
JOURNAL OF CHEMICAL ECOLOGY
Volume 31, Issue 6, Pages 1369-1379Publisher
SPRINGER
DOI: 10.1007/s10886-005-1351-z
Keywords
western flower thrips; Frankliniella occidentalis; Thysanoptera; Thripidae; aggregation pheromone; (R)-lavandulyl acetate; neryl (S)-2-methylbutanoate
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Two major components have been detected in the headspace volatiles of adult male Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) that are not present in the headspace volatiles of adult females. The compounds were identified as (R)-lavandulyl acetate and neryl (S)-2-methylbutanoate by comparison with synthetic standards using gas chromatography (GC), GC mass spectrometry (MS), and chiral GC. Field trials were conducted with synthetic compounds in naturally infested crops of sweet pepper grown in large plastic greenhouses in Spain. The catch of adult females and males on blue Sticky raps was increased by neryl (S)-2-methylbutanoate alone or by a 1:1 blend of (R)-lavandulyl acetate and neryl (S)-2-methylbutanoate, but (R)-lavandulyl acetate was not active alone. This is the first identification of an aggregation pheromone in the order Thysanoptera. The possible role of (R)-lavandulyl acetate is discussed.
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