Analysis of anal droplets of the western flower thrips Frankliniella occidentalis

MacDonald, Kenneth M. and Hamilton, James G.C. and Jacobson, Robert and Kirk, William D.J. (2003) Analysis of anal droplets of the western flower thrips Frankliniella occidentalis. Journal of Chemical Ecology, 29 (10). pp. 2385-2389. ISSN 0098-0331

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Abstract

Larvae of the western flower thrips Frankliniella occidentalis are known to produce an anal droplet containing decyl acetate (10Ac) and dodecyl acetate (12Ac), which act as an alarm pheromone. Analysis by GC showed that the combined mass of 10Ac and 12Ac per droplet increased with age of second instars from 2 ng to 18 ng, while the mass ratio of 10Ac:12Ac increased from 0.4:1 to 1.1:1 (molar ratio 0.4:1 to 1.2:1). Droplet volume increased from 0.4 nl to 2.1 nl with age, but only about 1% of this was accounted for by 10Ac and 12Ac. The remainder contained water. Analysis by GC-MS using SPME revealed no other volatile components. Whole bodies contained about two to four times as much 10Ac and 12Ac as a droplet, but in a similar ratio.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Chemical Ecology
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1300/1303
Subjects:
ID Code:
137168
Deposited By:
Deposited On:
30 Sep 2019 22:19
Refereed?:
Yes
Published?:
Published
Last Modified:
26 Aug 2020 04:41