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Registros recuperados: 9
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Barley yellow dwarf disease risk assessment based on Bayesian modelling of aphid population dynamics Inra
Fabre, F;; Pierre, J.S.; Dedryver, C.A.; Plantegenest, M..
A stochastic population dynamics model is proposed to improve integrated pest management strategies against the aphid Rhopalosiphum padi, the main Barley yellow dwarf virus (BYDV) vector in winter cereals during autumn in Europe. The model is based on a temperature-dependent simulation of R. padi population dynamics. The model requires a single early assessment of the proportion of plants infested by aphids. To account for sampling errors and for uncertainty caused by the numerous factors acting on aphid population dynamics under field conditions, Bayesian statistical inference was used. The model allows assessment of the probability distribution of the area under the curve of the percentage of plants infested by R. padi during autumn, a predictor of the...
Tipo: Journal Article Palavras-chave: BYDV; PUCERON; RHOPALOSIPHUM PADI; LUTTE INTEGREE.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20072a6878df&uri=/notices/prodinra1/2008/04/
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Discrimination des truites de mer (Salmo trutta) et saumons atlantique (Salmo salar) adultes à partir de leurs écailles IRD
Ombredane, D.; Tanguy, J.M.; Pierre, J.S..
Les écailles provenant de truites de mer et de saumons adultes capturés essentiellement en Basse-Normandie et en Bretagne, sont caractérisées par leur taille, leur forme et leur structure fine. Pour un échantillon principal de 105 individus, on montre que 1-à taille de poisson (Lt) égale, la longueur (L), la largeur (l) et le rayon postérieur (L-R) des écailles sont plus grands chez le saumon; 2 - la forme des écailles est similaire pour les deux espèces (rapports 1/L équivalents) mais le saumon se distingue par un focus plus central; 3 - l'espace intercirculi et la croissance de l'écaille pendant la première année marine ainsi que la taille rétrocalculée à la fin de cette année sont plus grands chez le saumon. Des fonctions discriminantes bivariées...
Tipo: Text Palavras-chave: POISSON MARIN; ECAILLE; ANALYSE FACTORIELLE; TRUITE DE MER; SAUMON; SCALIMETRIE.
Ano: 1992 URL: http://www.documentation.ird.fr/hor/fdi:35927
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Efficacite pollinisatrice de differents traitements sur 2 lignees de feverole de printemps (Vicia faba L var equina Steudel), a des niveaux d'autofertilite differents, avec utilisation de diverses especes de Bombus Latr (Hymenoptera: Apidae) Inra
Le Guen, J.; Mesquida, J.; Pierre, J.S.; Morin, G.; Tasei, J.N.; Carre, S..
Tipo: Journal Article Palavras-chave: BOMBUS; HYMENOPTERE; POLLINISATION ENTOMOPHILE; RENDEMENT EN GRAIN; AUTOCOMPATIBILITE POLLINIQUE; POLLINISATION LIBRE; NOUAISON.
Ano: 1993 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9300012402032012&uri=/notices/prodinra1/2009/12/
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Hybridations entre Globodera rostochiensis (Wollenweber), G. pallida (Stone), G. virginiae (Miller and Gray), G. solanacearum (Miller and Gray) et G. "mexicana" (Campos-Vela) : description et devenir des hybrides IRD
Mugniéry, D.; Bossis, M.; Pierre, J.S..
Tipo: Text Palavras-chave: NEMATODE PHYTOPARASITE; HYBRIDATION INTERSPECIFIQUE; HYBRIDE; ANATOMIE ANIMALE.
Ano: 1992 URL: http://www.documentation.ird.fr/hor/fdi:40233
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Incidence du caractere apetale chez le colza (Brassica napus L var oleifera) sur le comportement de butinage de l'abeille domestique (Apis mellifera): etude preliminaire Inra
Pierre, J.S.; Renard, M..
Tipo: Journal Article Palavras-chave: APIS MELLIFERA; SCLEROTINIOSE; CARACTERE MORPHOLOGIQUE; SELECTION; BUTINAGE; LIGNEE.
Ano: 1994 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9500012946042763&uri=/notices/prodinra1/2009/12/
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Les lignees d'addition ble-Aegilops ventricosa Taush. VI.-Etude de la localisation chromosomique de la resistance a l'egard d'Heterodera avenae Woll. Inra
Rivoal, R.; Dosba, F.; Jahier, J.; Pierre, J.S..
La lignée d’addition m 36 issue du croisement blé - Aegilops ventricosa exprime une importante résistance au développement d’Heterodera avenae. L’étude de la F2 (« Moisson » x m 36) montre que le (s) gène (s) de résistance impliqué (s) est (sont) localisé (s) sur les chromosomes additionnels 6 MV. Le niveau de la résistance dépend du nombre de chromosomes ajoutés. Il varie également en fonction du pathotype considéré, Ha 12 ou Ha 41. L’étude contribue en outre à affiner la méthode de caractérisation de la résistance, au niveau du nombre minimum de plantes à analyser.
Tipo: Journal Article Palavras-chave: RESISTANCE AUX NEMATODES; CROISEMENT INTERSPECIFIQUE; PATHOTYPE; CULTURE CEREALIERE; AEGILOPS VENTRICOSA; HETERODERA AVENAE.
Ano: 1986 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB8603174001397&uri=/notices/prodinra1/2009/03/
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Patch departure rules in Bumblebees: evidence of a decremental motivational mechanism Inra
Lefebvre, D.; Pierre, J.; Outreman, Y.; Pierre, J.S..
The patch living rules of a pollinator, the bumblebee Bombus terrestris L., are studied here in the framework of motivational models widely used for parasitoids: The rewarding events found during the foraging process are supposed to increase or decrease suddenly the tendency of the insect to stay in the current patch and therefore to adjust the patch residence time to the patch profitability. The foraging behaviour of these pollinators was observed in two environment types to determine their patch-leaving decisions. The rich environment was composed of male-fertile flowers, offering pollen and nectar, and the poor one of male-sterile flowers, offering little nectar and no pollen. The experimental design consisted of a patch system in which inflorescences...
Tipo: Journal Article Palavras-chave: BOURDON; BUTINAGE; MODELE DE COX.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007ecefca0b&uri=/notices/prodinra1/2010/11/
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Rapeseed (Brassica napus L.) productivity : the effect of honeybees (Apis mellifera L.) and different pollination conditions in cage and field tests Inra
Mesquida, J.; Renard, M.; Pierre, J.S..
Tipo: Journal Article Palavras-chave: HYMENOPTERA; APIDAE; APIS MELLIFERA; BOMBUS TERRESTRIS; DIPTERA; CALLIPHORA; POLLINISATEUR; POLLINISATION ANEMOPHILE; POLLINISATION ENTOMOPHILE.
Ano: 1988 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9300025097033653&uri=/notices/prodinra1/2009/12/
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Recognition behavior of the cassava mealybug Phenacoccus manihoti Matile-Ferrero (Homoptera:Pseudococcidae) at the leaf surface of different host plants Inra
Renard, S.; Calatayud, P.A.; Pierre, J.S.; Le Rü, B..
The testing behavior and test probing which are a part of host-plant acceptance behavior were studied in P. manihoti. Attention was focused on the testing behavior of three plants of the Manihot genus (Incoza, M'Pembé and Faux-caoutchouc) and a weed of the cassava fields (Talinum). This enabled us not only to characterize the associated behavior but also to show that the mealybug is able to distinguish between different host plants when walking on the leaf. The video description of the test probing of first- and fourth-instar larvae on M'Pembé and on the Faux-caoutchouc shows that the succession of the phases is similar. After a first phase characterized by the repeated intervention of the mealybug sensorial organs, a second phase, more mechanical, with...
Tipo: Journal Article Palavras-chave: PHENACOCCUS MANIHOTI; RELATION HOTE PARASITE; HOTE; INSECTE NUISIBLE PHENACOCCUS MANHOTI; PSEUDOCOCCIDAE; CASSAVA; TESTING BEHAVIOR; TEST PROBING.
Ano: 1998 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9900013098076650&uri=/notices/prodinra1/2010/11/
Registros recuperados: 9
Primeira ... 1 ... Última
 

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