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Abstract:

Most animals rely on olfaction to find sexual partners, food or a habitat. The olfactory system faces the challenge of extracting meaningful information from a noisy odorous environment. In most moth species, males respond to sex pheromone emitted by females in an environment with abundant plant volatiles. Plant odours could either facilitate the localization of females (females calling on host plants), mask the female pheromone or they could be neutral without any effect on the pheromone. Here we studied how mixtures of a behaviourally-attractive floral odour, heptanal, and the sex pheromone are encoded at different levels of the olfactory pathway in males of the noctuid moth Agrotis ipsilon. In addition, we asked how interactions between the two odorants change as a function of the males' mating status. We investigated mixture detection in both the pheromone-specific and in the general odorant pathway. We used a) recordings from individual sensilla to study responses of olfactory receptor neurons, b) in vivo calcium imaging with a bath-applied dye to characterize the global input response in the primary olfactory centre, the antennal lobe and c) intracellular recordings of antennal lobe output neurons, projection neurons, in virgin and newly-mated males. Our results show that heptanal reduces pheromone sensitivity at the peripheral and central olfactory level independently of the mating status. Contrarily, heptanal-responding olfactory receptor neurons are not influenced by pheromone in a mixture, although some post-mating modulation occurs at the input of the sexually isomorphic ordinary glomeruli, where general odours are processed within the antennal lobe. The results are discussed in the context of mate localization. © 2012 Deisig et al.

Registro:

Documento: Artículo
Título:Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
Autor:Deisig, N.; Kropf, J.; Vitecek, S.; Pevergne, D.; Rouyar, A.; Sandoz, J.-C.; Lucas, P.; Gadenne, C.; Anton, S.; Barrozo, R.
Filiación:UMR 1272 Physiologie de l'Insecte: Signalisation et Communication, INRA, Route de Saint-Cyr, Versailles, France, Université Pierre et Marie Curie, 7 Quai Saint Bernard, Paris, France
CNRS, UMR 5169, Université Paul Sabatier, Research Center for Animal Cognition, Toulouse, France
Behavioral Physiology and Sociobiology, University of Wuerzburg, Wuerzburg, Germany
Laboratory of Evolution, Genomes, Speciation, CNRS UPR 9034, Gif-sur-Yvette, France
Laboratoire Récepteurs et Canaux Ioniques Membranaires, UPRES-EA 2647 USC INRA 1330, Université d'Angers, Angers, France
Department of Biodiversity and Experimental Biology, FCEyN, University of Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
Palabras clave:calcium; sex pheromone; aldehyde; heptyl aldehyde; sex pheromone; Agrotis ipsilon; antenna (organ); article; cytology; hormone action; in vivo study; male; mate choice; mating system; molecular imaging; moth; nerve potential; neuromodulation; nonhuman; odor; olfactory receptor; olfactory system; plant odor; analysis of variance; animal; chemistry; chemotaxis; metabolism; moth; odor; physiology; sexual behavior; Agrotis ipsilon; Animalia; Lepidoptera; Noctuidae; Aldehydes; Analysis of Variance; Animals; Chemotaxis; Male; Moths; Odors; Olfactory Receptor Neurons; Sex Attractants; Sexual Behavior, Animal; Smell
Año:2012
Volumen:7
Número:3
DOI: http://dx.doi.org/10.1371/journal.pone.0033159
Título revista:PLoS ONE
Título revista abreviado:PLoS ONE
ISSN:19326203
CAS:calcium, 14092-94-5, 7440-70-2; heptyl aldehyde, 111-71-7; Aldehydes; Sex Attractants; heptanal, 111-71-7
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_19326203_v7_n3_p_Deisig.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19326203_v7_n3_p_Deisig

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Citas:

---------- APA ----------
Deisig, N., Kropf, J., Vitecek, S., Pevergne, D., Rouyar, A., Sandoz, J.-C., Lucas, P.,..., Barrozo, R. (2012) . Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth. PLoS ONE, 7(3).
http://dx.doi.org/10.1371/journal.pone.0033159
---------- CHICAGO ----------
Deisig, N., Kropf, J., Vitecek, S., Pevergne, D., Rouyar, A., Sandoz, J.-C., et al. "Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth" . PLoS ONE 7, no. 3 (2012).
http://dx.doi.org/10.1371/journal.pone.0033159
---------- MLA ----------
Deisig, N., Kropf, J., Vitecek, S., Pevergne, D., Rouyar, A., Sandoz, J.-C., et al. "Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth" . PLoS ONE, vol. 7, no. 3, 2012.
http://dx.doi.org/10.1371/journal.pone.0033159
---------- VANCOUVER ----------
Deisig, N., Kropf, J., Vitecek, S., Pevergne, D., Rouyar, A., Sandoz, J.-C., et al. Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth. PLoS ONE. 2012;7(3).
http://dx.doi.org/10.1371/journal.pone.0033159