Response of Mythimna unipuncta males to components of the Sesamia nonagrioides pheromone

Eizaguirre Altuna, Matilde; López Alonso, Carmen; Sans i Badia, Albert; Bosch Serra, Dolors; Albajes Garcia, Ramon

doi:https://doi.org/10.1007/s10886-009-9662-0

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Issue date

2009

Author

Eizaguirre Altuna, Matilde

López Alonso, Carmen

Sans i Badia, Albert

Bosch Serra, Dolors

Albajes Garcia, Ramon

Suggested citation

Eizaguirre Altuna, Matilde; López Alonso, Carmen; Sans i Badia, Albert; Bosch Serra, Dolors; Albajes Garcia, Ramon; . (2009) . Response of Mythimna unipuncta males to components of the Sesamia nonagrioides pheromone. Journal of Chemical Ecology, 2009, vol. 35, núm. 7, p. 779-784. https://doi.org/10.1007/s10886-009-9662-0.

Abstract

Several sympatric lepidopteran species feed on maize plants, and the different components of their species-specific female sex pheromones may play a role in attracting conspecifics and/or deter heterospecific males. In this study, we analyzed the content of Mythimna unipuncta pheromone glands and

tested the response of males to components of their own pheromone blend and that of Sesamia nonagrioides in the wind tunnel. Whole pheromone glands, and lures where (Z)-9-hexadecenyl acetate, Z)-11-hexadecen-1-ol or (Z)-9-hexadecenyl acetate + (Z)-11-hexadecen-1-ol were added to the major component, (Z)-11-hexadecenyl acetate, elicited significantly higher responses by M. unipuncta males than lures with main component alone, although the levels varied with concentration. In the field a rather different outcome was observed, as the addition of other compounds found in the female pheromone gland did not improve trap catch over lures with only (Z)-11-hexadecenyl acetate. The addition of (Z)-11- hexadecenal, a compound of the S. nonagrioides pheromone, to (Z)-11-hexadecenyl acetate significantly reduced attraction of M. unipuncta males both in the wind tunnel and in the field, as well as the number of sympatric clover cutworm, Discestra trifolii, under field conditions. The addition of (Z)-9-hexadecenyl acetate, a minor component of the M. unipuncta pheromone blend, reduced the number of S. nonagrioides captured in field traps that were baited with the S. nonagrioides lure. The significance of such inhibition in the reproductive isolation of sympatric species that attack maize is discussed

URI

http://hdl.handle.net/10459.1/57343

DOI

https://doi.org/10.1007/s10886-009-9662-0

Is part of

Journal of Chemical Ecology, 2009, vol. 35, núm. 7, p. 779-784