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Identification of sex pheromone components of the Hessian fly, Mayetiola destructor.

Författare:
  • Martin N Andersson
  • Jenny Haftmann
  • Jeffrey J Stuart
  • Sue E Cambron
  • Marion O Harris
  • Stephen P Foster
  • Stephan Franke
  • Wittko Francke
  • Ylva Hillbur
Publiceringsår: 2009
Språk: Engelska
Sidor: 81-95
Publikation/Tidskrift/Serie: Journal of Chemical Ecology
Volym: 35
Dokumenttyp: Artikel i tidskrift
Förlag: Springer

Sammanfattning

Coupled gas chromatographic (GC)–electroantennographic

detection (EAD) analyses of ovipositor

extract of calling Hessian fly, Mayetiola destructor, females

revealed that seven compounds elicited responses from

male antennae. Four of the compounds—(2S)-tridec-2-yl

acetate, (2S,10Z)-10-tridecen-2-yl acetate, (2S,10E)-10-

tridecen-2-yl acetate, and (2S,10E)-10-tridecen-2-ol—were

identified previously in female extracts. Two new EADactive

compounds, (2S,8Z,10E)-8,10-tridecadien-2-yl acetate

and (2S,8E,10E)-8,10-tridecadien-2-yl acetate, were identified

by GC–mass spectroscopy (MS) and the use of synthetic

reference samples. In a Y-tube bioassay, a five-component

blend (1 ng (2S)-tridec-2-yl acetate, 10 ng (2S,10E)-10-

tridecen-2-yl acetate, 1 ng (2S,10E)-10-tridecen-2-ol, 1 ng

(2S,8Z,10E)-8,10-tridecadien-2-yl acetate, and 1 ng

(2S,8E,10E)-8,10-tridecadien-2-yl acetate) was as attractive

to male Hessian flies as a similar amount of female extract

(with respect to the main compound, (2S,10E)-10-tridecen-

2-yl acetate). The five-component blend was more attractive

to male flies than a three-component blend lacking the two

dienes. Furthermore, the five-component blend was more

attractive than a blend with the same compounds but that

contained one tenth the concentration of (2S,8E,10E)-8,

10-tridecadien-2-yl acetate (more accurately mimicking the

ratios found in female extract). This suggests that the ratios

emitted by females might deviate from those in gland

extracts. In a field-trapping experiment, the five-component

blend applied to polyethylene cap dispensers in a 100:10 μg

ratio between the main component and each of the other

blend components attracted a significant number of male

Hessian flies. Also, a small-plot field test demonstrated the

attractiveness of the five-component blend to male Hessian

flies and suggests that this pheromone blend may be useful

for monitoring and predicting Hessian fly outbreaks in

agricultural systems.

Nyckelord

  • Biological Sciences
  • Zoology
  • 10E)-8
  • 8Z
  • 10E)-10-Tridecen-2-ol
  • 10E)-10-tridecen-2-yl acetate
  • (2S
  • (2S)-Tridec-2-yl acetate
  • Sex pheromone
  • Diptera
  • Cecidomyiidae
  • Mayetiola destructor
  • Hessian fly
  • 10-Tridecadien-2-yl acetate
  • 8E
  • GC–EAD
  • Y-tube bioassay
  • Field trapping

Övriga

Published
  • Pheromone Group
  • ISSN: 1573-1561

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