Intraspecific Variation in Female Sex Pheromone of the Codling Moth Cydia pomonella

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2014Author
Duménil, Claire
Judd, Gary J. R.
Bosch Serra, Dolors
Baldessari, Mario
Groot, Astrid T.
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Duménil, Claire;
Judd, Gary J. R.;
Bosch Serra, Dolors;
Baldessari, Mario;
Gemeno Marín, César;
Groot, Astrid T.;
.
(2014)
.
Intraspecific Variation in Female Sex Pheromone of the Codling Moth Cydia pomonella.
Insects, 2014, vol. 5, p. 705-721.
https://doi.org/10.3390/insects5040705.
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The codling moth, Cydia pomonella L. (Lepidoptera, Tortricidae), is a major
pest of apple, pear and walnut orchards worldwide. This pest is often controlled using the
biologically friendly control method known as pheromone-based mating disruption. Mating
disruption likely exerts selection on the sexual communication system of codling moth, as
male and female moths will persist in their attempt to meet and mate. Surprisingly little is
known on the intraspecific variation of sexual communication in this species. We started an
investigation to determine the level of individual variation in the female sex pheromone
composition of this moth and whether variation among different populations might be
correlated with use of mating disruption against those populations. By extracting pheromone
glands of individual females from a laboratory population in Canada and from populations
from apple orchards in Spain and Italy, we found significant between- and within-population variation. Comparing females that had been exposed to mating disruption, or not, revealed
a significant difference in sex pheromone composition for two of the minor components.
Overall, the intraspecific variation observed shows the potential for a shift in female sexual
signal when selection pressure is high, as is the case with continuous use of mating disruption.
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Insects, 2014, vol. 5, p. 705-721European research projects
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