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Registros recuperados: 7
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Cloning of an octopamine/tyramine receptor and plasticity of its expression as a function of adult sexual maturation in the male moth Agrotis ipsilon Inra
Duportets, L.; Barrozo, R.B.; Bozzolan, F.; Gaertner, C.; Anton, S.; Gadenne, C.; Debernard, S..
In the male moth Agrotis ipsilon behavioural response and antennal lobe (AL) neuron sensitivity to the female-produced sex pheromone increase with age and juvenile hormone (JH) level. We recently showed that the neuromodulator, octopamine (OA), interacts with JH in this age-dependent olfactory plasticity. To further elucidate its role, we cloned a full cDNA encoding a protein that presents biochemical features essential to OA/tyramine receptor (AipsOAR/TAR) function. The AipsOAR/TAR transcript was detected predominantly in the antennae, the brain and, more specifically, in ALs where its expression level varied concomitantly with age. This expression plasticity indicates that AipsOAR/TAR might be involved in central processing of the pheromone signal during...
Tipo: Journal Article Palavras-chave: LOBE ANTENNAIRE; LEPIDOPTERA; NOCTUIDAE; AGROPIS IPSILON; RECEPTEUR; OLFACTION; MITE; INSECTE; MATURATION SEXUELLE; ARTHROPODA; HEXAPODA; NEURONE; PHEROMONE; HORMONE; ADNC; CLONAGE; COMPORTEMENT SEXUEL; ATTRACTIF SEXUEL ANTENNAL LOBE; OCTOPAMINE/TYRAMINE RECEPTOR; OLFACTORY PROCESSING; MATURATION; EXPRESSION PLASTICITY.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20102d18e75d&uri=/notices/prodinra1/2011/02/
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Mating-induced transient inhibition of responses to sex pheromone in a male moth is not mediated by octopamine or serotonin Inra
Barrozo, R.; Jarriault, D.; Simeone, X.; Gaertner, C.; Gadenne, C.; Anton, S..
In the male moth, Agrotis ipsilon, mating induces a transient inhibition of behavioural and central nervous responses to sex pheromone. Newly mated males are not attracted to sex pheromone, and the sensitivity of their antennal lobe (AL) neurons is lower than in virgin males. This rapid transient olfactory inhibition prevents them from re-mating unsuccessfully until they have refilled their sex glands. We hypothesized that this olfactory ‘switch off’ might be controlled by neuromodulators such as biogenic amines. To test our hypothesis, we studied the effects of octopamine (OA) and serotonin (5-hydroxytryptamine, 5-HT) on the coding properties of pheromone-sensitive AL neurons in virgin and newly mated males. We show that AL neuron sensitivity increased in...
Tipo: Journal Article Palavras-chave: AGROTIS IPSILON; INSECTE; MITE; OLFACTION; ODEUR; LOBE ANTENNALE; PHEROMONE SEXUELLE; ATTRACTIF SEXUEL; SEROTONINE; PLASTICITE; SYSTEME NERVEUX CENTRAL; NEURONE; RECEPTEUR; OCTOPAMINE; NOCTUIDAE; LEPIDOPTERA OLFACTORY CODING; MOTH; ANTENNAL LOBE; SEX PHEROMONE; PROJECTION NEURON; MATING; OCTOPAMINE; SEROTONIN; PLASTICITY.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010e7ad9fc3&uri=/notices/prodinra1/2010/09/
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Post-mating sexual abstinence in a male moth Inra
Barrozo, R.; Gadenne, C.; Anton, S..
In most animals, male copulation is dependent on the detection and processing of female-produced sex pheromones. In males, a refractory post-ejaculatory interval (PEI) follows copulation, allowing them to avoid direct remating until they have replenished their reproductive tracts. In the moth Agrotis ipsilon, newly mated males show a transient inhibition of behavioral and central nervous responses to sex pheromone. Using nonpheromonal (plant) odors, pheromones and their mixture, we now show that the observed lack of pheromone response originates from differential post-mating odor processing in the brain. Although mated males still respond to plant odors alone, their response to mixtures depends on the added pheromone concentration. Below a specific...
Tipo: Journal Article Palavras-chave: PLANTE; ODEUR; LOBE ANTENNAIRE; PLASTICITE; ABSTINCENCE SEXUELLE; AGROTIS IPSILON; SYSTEME NERVEUX CENTRAL; COMPORTEMENT; LEPIDOPTERA; INSECTE LEPIDOPTERA; NOCTUIDAE; MOTH; OLFACTION; MATING; PHEROMONE; PLANT ODOUR; ANTENNAL LOBE; PLASTICITY.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010305acd70&uri=/notices/prodinra1/2011/01/
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Quantitative analysis of sex-pheromone coding in the antennal lobe of the moth Agrotis ipsilon: a tool to study network plasticity Inra
Jarriault, D.; Gadenne, C.; Rospars, J.P.; Anton, S..
To find a mating partner, moths rely on pheromone communication. Released in very low amounts, female sex pheromones are used by males to identify and localize females. Depending on the physiological state (i.e. age, reproductive state), the olfactory system of the males of the noctuid moth Agrotis ipsilon is `switched on or off'. To understand the neural basis of this behavioural plasticity, we performed a detailed characterization of the qualitative, quantitative and temporal aspects of pheromone coding in the primary centre of integration of pheromonal information, the macroglomerular complex (MGC) of the antennal lobe. MGC neurons were intracellularly recorded and stained in sexually mature virgin males. When stimulating antennae of males with the...
Tipo: Journal Article Palavras-chave: AGROTIS IPSILON; ARTHROPODA; HEXAPODA; INSECTE; PHEROMONE; MITE; PLASTICITE; ATTRACTIF SEXUEL; NEURONE; OLFACTION; LOBE ANTENNAIRE OLFACTORY CODING; MOTH; ANTENNAL LOBE; SEX-PHEROMONE; PROJECTION NEURON; SPIKE TRAIN ANALYSIS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010352d8cb4&uri=/notices/prodinra1/2010/10/
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Switching attraction to inhibition: mating-induced reversed role of sex pheromone in an insect Inra
Barrozo, R.; Gadenne, C.; Anton, S..
In the moth, Agrotis ipsilon, newly mated males cease to be attracted to the female-produced sex pheromone, preventing them from re-mating until the next night, by which time they would have refilled their reproductive glands for a potential new ejaculate. The behavioural plasticity is accompanied by a decrease in neuron sensitivity within the primary olfactory centre, the antennal lobe (AL). However, it was not clear whether the lack of the sexually guided behaviour results from the absence of sex pheromone detection in the ALs, or if they ignore it in spite of detection, or if the sex pheromone itself inhibits attraction behaviour after mating. To test these hypotheses, we performed behavioural tests and intracellular recordings of AL neurons to...
Tipo: Journal Article Palavras-chave: AGROTIS IPSILON; NOCTUIDAE; LEPIDOPTERA; INSECTE; ATTRACTIF SEXUEL; PHEROMONE SEXUELLE; MITE; ODEUR; PLANTE; NEURONE; PHYSIOLOGIE SENSORIELLE; LOBE ANTENNAIRE; PLASTICITE MOTH; OLFACTION; MATING; SEX PHEROMONE; PLANT ODOUR; PLASTICITY; ANTENNAL LOBE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20107e58cbab&uri=/notices/prodinra1/2010/09/
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Transformation of the sex pheromone signal in the noctuid moth agrotis ipsilon: From peripheral input to antennal lobe output Inra
Jarriault, D.; Gadenne, C.; Lucas, P.; Rospars, J.P.; Anton, S..
How information is transformed along synaptic processing stages is critically important to understand the neural basis of behavior in any sensory system. In moths, males rely on sex pheromone to find their mating partner. It is essential for a male to recognize the components present in a pheromone blend, their ratio, and the temporal pattern of the signal. To examine pheromone processing mechanisms at different levels of the olfactory pathway, we performed single-cell recordings of olfactory receptor neurons (ORNs) in the antenna and intracellular recordings of central neurons in the macroglomerular complex (MGC) of the antennal lobe of sexually mature Agrotis ipsilon male moths, using the same pheromone stimuli, stimulation protocol, and response...
Tipo: Journal Article Palavras-chave: AGROTIS IPSILON; LEPIDOPTERA; NOCTUIDAE; NEURONE; RECEPTEUR; OLFACTION; MITE; INSECTE; ARTHROPODA; HEXAPODA; NOCTUIDAE; LOBE ANTENNAIRE; ATTRACTIF SEXUEL; STIMILUS INTRACELLULAR RECORDING; MACROGLOMERULAR COMPLEX; MGC NEURON; OLFACTORY CODING; OLFACTORY RECEPTOR NEURON; SINGLE SENSILLUM RECORDING.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20105ff8856a&uri=/notices/prodinra1/2010/11/
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Utilisation de criteres metaboliques et morphogenetiques pour l'analyse de la diapause de populations naturelles d'Ostrinia nubilalis Hbn. (Lep., Pyralidae) Inra
Gadenne, C.; Peypelut, L.; Lavenseau, L.; Got, B..
Des populations de pyrale du maïs de plein champ, issues d’infestations artificielles réalisées tout au long du mois de juillet, ont été étudiées en 1984 dans les stations I.N.R.A. de Colmar et Versailles et en 1985 et 1986 à Versailles uniquement. L’utilisation de critères physiologiques tels que la tréhalosémie et l’observation des disques imaginaux alaires permet de mieux comprendre les différentes étapes caractérisant leur diapause. L’entrée apparente et la sortie de diapause s’effectuent au même moment quelles que soient la date d’infestation des pieds de maïs et l’origine géographique des pyrales. La tréhalosémie, élevée pendant l’hiver, chute au mois d’avril, soit 2 mois avant l’apparition d’un taux de 50 p. 100 de nymphes dans les...
Tipo: Journal Article Palavras-chave: LEPIDOPTERA; PYRALIDAE; OSTRINIA NUBILALIS; DIAPAUSE; MARQUEUR PHYSIOLOGIQUE; EBAUCHE ALAIRE; DISQUES IMAGINAUX; POPULATION NATURELLE; DEVELOPPEMENT; TREHALOSE; AILE.
Ano: 1987 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9100024103022105&uri=/notices/prodinra1/2009/07/
Registros recuperados: 7
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