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Registros recuperados: 6
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Chemistry of defensive secretions in nymphs and adults of fire bug , Pyrrhocoris apterus L.(Heteroptera, Pyrrhocoridae) Inra
Farine, J.P.; Bonnard, O.; Brossut, R.; Le Quere, J.L..
The defensive secretions from the nymphs and the adults of both sexes in P. apterus were chemically investigated. Forty components were identified from the nymphal posterior dorsoabdominal glands and 35 from the adult metathoracic glands of both sexes. Within the 43 identified chemicals, we found 23 aldehydes, five saturated hydrocarbons, five alcohols, three ketones, three lactones, two terpenes, one phenol and one ester. Thirteen of these compounds had never been reported within the Heteroptera. Whereas eight components are specific to the nymphs, methyl pentenal, (E)-2-hexenol, and heptadecanal are the only adult-specific components. The biological role of all the identified chemicals is almost unknown in P. apterus and is discussed comparatively with...
Tipo: Journal Article Palavras-chave: COMPORTEMENT DE DEFENSE; ADULTE; NYMPHE; HETEROPTERE; PUNAISE; PYRRHOCORIDAE; GLANDE EXOCRINE; CHIMIE; MALE; COMPOSITION CHIMIQUE; SPECTROMETRIE DE MASSE PYRRHOCORIS APTERUS; HETEROPTERA; PYRRHOCORIDAE; BUG; EXOCRINE GLANDS; PHEROMONES; DEFENSE.
Ano: 1992 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9400031569035234&uri=/notices/prodinra1/2010/11/
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Chemistry of pheromonal and defensive secretions in the nymphs and the adults of Dysdercus cingulatus fabr. (Heteroptera, Pyrrhocoridae) Inra
Farine, J.P.; Bonnard, O.; Brossut, R.; Le Quere, J.L..
The exocrine secretions from the nymphs and the adults of both sexes in D. cingulatus were chemically investigated. Seven compounds were identified in the anterior glands, and eleven in the median dorsoabdominal glands of nymphs and adults of both sexes. Fifty-five compounds were identified in the defensive glands (34 in posterior dorsoabdominal glands ofnymphs and 21 in metathoracic glands of adults), and six in the sternal glandular epithelium of the males. The biological function of the glandular secretions and of their identified compounds were investigated and are discussed.
Tipo: Journal Article Palavras-chave: GLANDE EXOCRINE; HETEROPTERE; DYSDERCUS CINGULATUS; PYRRHOCORIDAE; ADULTE; NYMPHE; PUNAISE; IDENTIFICATION; MALE; ALLOMONE; CHIMIE DYSDERCUS CINGULATUS; HETEROPTERA; PYRRHOCORIDAE; EXOCRINE GLANDS; PHEROMONES; BUG; AGGREGATION; ALLOMONES; COTTON STAINER; DEFENSIVE SECRETIONS.
Ano: 1992 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9400031568035233&uri=/notices/prodinra1/2010/11/
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Defensive secretion of Therea petiveriana : chemical identification and evidence of an alarm function Inra
Farine, J.P.; Sémon, E.; Everaerts, C.; Abed, D.; Grandcolas, P.; Brossut, R..
The volatile constituents of the supposed defensive secretions of the glandular pouches of the adults of both sexes of the cockroach Therea petiveriana have been shown to contain N-3-methylbutylacetamide (MBA) and N-3-methylbutylpropanamide (MBP), which represented 60% of the volatile fraction. The other 40% included acidic, aromatic, and aldehydic compounds. Behavioral experiments demonstrated that the secretion acts as an alarm pheromone for adults.
Tipo: Journal Article Palavras-chave: BLATTE; PHEROMONE D'ALARME; BLATTARIA; DICTYOPTERA; THEREA PETIVERIANA DICTYOPTERA; POLYPHAGIDAE; THEREA PETIVERIANA; EXOCRINE GLANDS; PHEROMONES; ALARM.
Ano: 2002 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0300035047097037&uri=/notices/prodinra1/2010/11/
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Differences in sex pheromone communication systems of closely related species : Spodoptera latifascia (Walker) and S. descoinsi Lalanne-Cassou and Silvain (Lepidoptera : Noctuidae) Inra
Monti, L.; Lalanne-Cassou, B.; Lucas, P.; Malosse, C.; Silvain, J.F..
S. latifascia and S. descoinsi are closely related species that occur sympatrically over limited areas in French Guiana. We examined allopatric populations, S. latifascia originating from Barbados and S. descoinsi from French Guiana. Studies on nocturnal activity cycles showed temporal partitioning of female calling behavior, male sexual activity, and mating behavior.S. descoinsi were sexually active in the first half of the scotophase whereas S. latifascia were sexually active in the second half. Seven compounds (Z9–14: Ac,Z9,E12–14: Ac,Z11–16: Ac,E9,E12–14: Ac,Z9–14: Ald,Z9,E11–14: Ac andZ11–14: Ac) were identified in females of both S. latifascia and S. descoinsi extracts.Z9–14: Ac was a main pheromone component for the two species. The major difference...
Tipo: Journal Article Palavras-chave: SPODOPTERA; LEPIDOPTERE; NOCTUIDAE; ACTIVITE SEXUELLE; ATTRACTION SEXUELLE; ISOLATION; PHEROMONE SEXUELLE; RYTHME D'ACTIVITE; ELECTROPHYSIOLOGIE; REPRODUCTION LEPIDOPTERA; NOCTUIDAE; SPODOPTERA LATIFASCIA; SPODOPTERA DESCOINSI; PHEROMONES; (Z)-9-TETRADECENYL ACETATE; (Z E)-9 12-TETRADECADIENYL ACETATE; SEXUAL ACTIVITY RHYTHMS; CROSS-ATTRACTION; ELECTROPHYSIOLOGY; REPRODUCTIVE ISOLATION.
Ano: 1995 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9600002138054208&uri=/notices/prodinra1/2010/11/
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Odour transduction in olfactory receptor neurons Inra
Rospars, J.P.; Gu, Y.; Gremiaux, A.; Lucas, P..
The molecular mechanisms that control the binding of odorant to olfactory receptors and transduce this signal into membrane depolarization are reviewed. They are compared in vertebrates and insects for interspecific (allelochemicals) and intraspecific (pheromones) olfactory signals. Attempts to develop quantitative models of these multistage signalling networks are presented. Computational analysis of olfactory transduction is still in its infancy and appears as a promising area for future developments.
Tipo: Journal Article Palavras-chave: SIGNAUX OLFACTIFS OLFACTORY RECEPTORS; IONIC CHANNELS; OBPS; PHEROMONES; COMPUTER MODELS.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011bbdb20b0&uri=/notices/prodinra1/2011/05/
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Temporal coding of pheronome pulses and trains in Manduca sexta Inra
Marion-Poll, F.; Tobin, T.R..
We investigated the ability of pheromone-sensitive olfactory receptors of male Manduca sexta to respond to 20-ms pulses of bombykal, the major component of the conspecific pheromonal blend. Isolated pulses of bombykal elicited a burst of activity which decreased exponentially with a time constant of 160–250 ms. Trains of pulses delivered at increasing frequencies (0.5–10 Hz) elicited temporally modulated responses at up to 3 Hz. Concentration of the stimulus (1, 10, 100 ng per odor source) had a marginal effect on the temporal resolution of the receptors. Within a train, the responses to individual pulses remained constant, except for 10-Hz trains (short-term adaptation). A dose-dependent decline of responsiveness was observed during experiments (long-term...
Tipo: Journal Article Palavras-chave: LEPIDOPTERA; SPHINGIDAE; MANDUCA SEXTA; ELECTROPHYSIOLOGIE ANDUCA SEXTA; OLFACTION; PHEROMONES; TEMPORAL CODING; ADAPTATION.
Ano: 1992 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9300009635034872&uri=/notices/prodinra1/2010/11/
Registros recuperados: 6
Primeira ... 1 ... Última
 

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