Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth

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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 vol...

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Autores principales:	Deisig, N., Kropf, J., Vitecek, S., Pevergne, D., Rouyar, A., Sandoz, J.-C., Lucas, P., Gadenne, C., Anton, S., Barrozo, R.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2012
Materias:	calcium sex pheromone aldehyde heptyl aldehyde 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 physiology sexual behavior Animalia Lepidoptera Noctuidae Aldehydes Analysis of Variance Animals Chemotaxis Male Moths Odors Olfactory Receptor Neurons Sex Attractants Sexual Behavior, Animal Smell
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_19326203_v7_n3_p_Deisig
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_19326203_v7_n3_p_Deisig2023-06-12T16:51:37Z Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth PLoS ONE 2012;7(3) Deisig, N. Kropf, J. Vitecek, S. Pevergne, D. Rouyar, A. Sandoz, J.-C. Lucas, P. Gadenne, C. Anton, S. Barrozo, R. 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 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. 2012 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_19326203_v7_n3_p_Deisig
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	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
spellingShingle	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 Deisig, N. Kropf, J. Vitecek, S. Pevergne, D. Rouyar, A. Sandoz, J.-C. Lucas, P. Gadenne, C. Anton, S. Barrozo, R. Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
topic_facet	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
description	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.
format	Artículo Artículo publishedVersion
author	Deisig, N. Kropf, J. Vitecek, S. Pevergne, D. Rouyar, A. Sandoz, J.-C. Lucas, P. Gadenne, C. Anton, S. Barrozo, R.
author_facet	Deisig, N. Kropf, J. Vitecek, S. Pevergne, D. Rouyar, A. Sandoz, J.-C. Lucas, P. Gadenne, C. Anton, S. Barrozo, R.
author_sort	Deisig, N.
title	Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
title_short	Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
title_full	Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
title_fullStr	Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
title_full_unstemmed	Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
title_sort	differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth
publishDate	2012
url	http://hdl.handle.net/20.500.12110/paper_19326203_v7_n3_p_Deisig
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Differential interactions of sex pheromone and plant odour in the olfactory pathway of a male moth

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