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Registros recuperados: 8
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A use-dependent sodium current modification induced by type I pyrethroid insecticides in honeybee antennal olfactory receptor neurons Inra
Kadala, A.; Charreton, M.; Jacob, I.; Le Conte, Y.; Collet, C..
We studied the mode of action of type I pyrethroids on the voltage-dependent sodium current from honeybee olfactory receptor neurons (ORNs), whose proper function in antenna is crucial for interindividual communication in this species. Under voltage-clamp, tetramethrin and permethrin induce a long lasting TTX-sensitive tail current upon repolarization, which is the hallmark of an abnormal prolongation of the open channel configuration. Permethrin and tetramethrin also slow down the sodium current fast inactivation. Tetramethrin and permethrin both bind to the closed state of the channel as suggested by the presence of an obvious tail current after the first single depolarization applied in the presence of either compounds. Moreover, at first sight,...
Tipo: Journal Article Palavras-chave: ABEILLE DOMESTIQUE; SENSILLE ANTENNAIRE; NEURONE A RECEPTEUR OLFACTIF; NEURONE SENSORIEL; ELECTROPHYSIOLOGIE; PERMETHRINE; TETRAMETHRINE; PYRETHRINOIDE; COURANT IONIQUE; SANTE; MODE ACTION; CANAL SODIUM; MODIFICATION ETAT-DEPENDANTE APIS MELLIFERA; APIDAE; APIFORMES; HYMENOPTERA.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201176512ee0&uri=/notices/prodinra1/2011/05/
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Communication chimique et régulations sociales dans la colonie d'abeilles (Apis mellifera L.) Inra
Maisonnasse, A..
La colonie d’abeille (Apis mellifera L.) est une société complexe où les individus interagissent entre eux, notament par le biais de phéromones. L’étude de cette communication chimique est indispensable à la compréhension des régulations sociales mises en place dans la colonie. Chez l’abeille, plus de 50 substances chimiques avec des effets incitateurs ou modificateurs sur la colonie ont été identifiées. Malgré ces découvertes, de nombreux travaux sont à accomplir pour mieux comprendre ce système de communication particulier.La problématique de cette thèse vise à caractériser l’histoire de vie d’une phéromone majeure l’Oléate d’Ethyle (EO), qui permet d’optimiser l’équilibre nourrices / butineuses dans la colonie. Parallèlement, d’autres recherches ont été...
Tipo: Thesis Palavras-chave: LARVE; BUTINEUSE; NOURRICE; REINE; E-ß-OCIMENE; ETHYL-OLEATE; GLANDE MANDIBULAIRE; DIVISION DU TRAVAIL; REGULATION SOCIALE; EFFET SEUIL; REDONDANCE APIS MELLIFERA; APIDAE; APIFORMES; HYMENOPTERA.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011ee76dbc&uri=/notices/prodinra1/2011/03/
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Construction et reconstruction de la cellule des rayons d'Apis mellifica National Institute of Agronomic Research
Darchen, Roger.
On étudie ici les régulations nombreuses survenant autour des cellules d'un rayon de cire d'Apis mellifica, lorsqu'une destruction partielle ou totale y a été pratiquée, lorsqu'un obstacle quelconque y est inséré. 1° On note que les irrégularités de cellules sont généralement éliminées d'une façon rapide par les nombreuses abeilles qui visitent sans cesse les cellules : les insectes sont capable de percevoir rapidement les faibles variations de l'épaisseur et de la rugosité des cloisons. 2° Les abeilles bouchent facilement les orifices, même important , percés dans les fonds ou dans les parois des alvéoles et se servent pour cela de cire vierge et de cire récupérée sur les rayons (cf. au si MEYER). Les reconstructions se divisent toujours en deux temps :...
Tipo: Journal Article-postprint Palavras-chave: APIS MELLIFERA; APIDAE; APIFORMES; HYMENOPTERA; SOCIAL INSECT; POLLINATOR; HONEYBEE; CELL; CONSTRUCTION; REBUILDING; INSECTE SOCIAL; POLLINISATEUR; ABEILLE DOMESTIQUE; CELLULE; RAYON; CONSTRUCTION.
Ano: 1958 URL: http://hdl.handle.net/2174/309
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Efficiency of airborne pollen released by honeybee foraging on pollination in oilseed rape: a wind insect-assisted pollination Inra
Pierre, J.; Vaissière, B.; Vallée, P.; Renard, M..
Oilseed rape (Brassica napus L.) is an entomophilous crop. Its pollen is covered with sticky pollenkitt and not readily released from the anthers. We investigated the role of foraging honeybees in making this pollen airborne. To assess this, six cages were laid over male-fertile (MF) and male-sterile (MS) plants; at flowering, three cages received a honeybee colony while the others served as controls. On average, approximately 25% more pollen grains were deposited on sticky slides (covered with gauze) in cages with honeybees, compared to control cages. The fruit and seed set per not-empty pod of 5 MS plants bagged under gauze to avoid bee visits were 7 times and 3.4 times higher, respectively, in the cages with honeybees than in control cages without...
Tipo: Journal Article Palavras-chave: BUTINAGE; APIFORMES; POLLINISATION ANEMOPHILE; EFFICACITE POLLINISATRICE APIS MELLIFERA; APIDAE; HYMENOPTERA.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20102a9eed7d&uri=/notices/prodinra1/2011/04/
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Landscape context and habitat type as drivers of bee biodiversity in European annual crops Inra
Carre, G.; Roche, P.; Chifflet, R.; Morison, N.; Bommarco, R.; Harrison-Cripps, J.; Krewenka, K.; Potts, S.G.; Roberts, S.P.M.; Rodet, G.; Settele, J.; Steffan-Dewenter, I.; Szentgyörgyi, H.; Tscheulin, T.; Westphal, C.; Woyciechowski, M.; Vaissière, B..
To better understand the dynamics of bee populations in crops, we assessed the effect of landscape context and habitat type on bee communities in annual entomophilous crops in Europe. We quantified bee communities in five pairs of crop-country: buckwheat in Poland, cantaloupe in France, field beans in the UK, spring oilseed rape in Sweden, and strawberries in Germany. For each country, 7–10 study fields were sampled over a gradient of increasing proportion of semi-natural habitats in the surrounding landscape. The CORINE land cover classification was used to characterize the landscape over a 3 km radius around each study field and we used multivariate and regression analyses to quantify the impact of landscape features on bee abundance and diversity at the...
Tipo: Journal Article Palavras-chave: POLLINISATEUR; BIODIVERSITE; HABITAT; PAYSAGE; CANTALOUP BEE BIODIVERSITY; ANNUAL CROPS; LANDSCAPE ECOLOGY; APIFORMES; POLLINATORS; BUCKWEAT; CANTALOUPE; BEAN; OILSEED RAPE; STRAWBERRY.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20091755f4d8&uri=/notices/prodinra1/2011/04/
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Morphologie und Physiologie der Drüsen in Kopf und Thorax der Honigbiene (Apis mellifica L.) National Institute of Agronomic Research
Kratky, Erich.
Tipo: Journal Article-postprint Palavras-chave: APIS MELLFERA; APIDAE; APIFORMES; HYMENOPTERA; SOCIAL INSECT; POLLINATOR; MORPHOLOGY; PHYSIOLOGY; HONEYBEE; HEAD; THORAX; GLAND; INSECTE SOCIAL; POLLINISATEUR; MORPHOLOGIE; PHYSIOLOGIE; ABEILLE DOMESTIQUE; TETE; THORAX; GLANDE; GLANDE CEPHALIQUE.
Ano: 1931 URL: http://hdl.handle.net/2174/310
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New Asian types of Varroa destructor: a potential new threat for world agriculture Inra
Navajas Navarro, M.; Anderson, D.; de Guzman, L.L.; Huang, Z.Y.; Clement, J.; Zhou, T.; Le Conte, Y..
The invasion of the Western honey bee, Apis mellifera, by Varroa destructor is attributed to two mitochondrial haplotypes (K and J) that shifted last century from their primary host the Eastern honey bee, A. cerana, in north-east Asia. Here, mitochondrial DNA sequences (cox1, cox3, atp6 and cytb: 2700 base pairs) were obtained from mites infesting both Eastern and Western honeybees (respectively 21 and 11 colonies) from Asia including regions where the shifts first occurred. A total of eighteen haplotypes were uncovered in Asia (11 on A. cerana and 7 on A. mellifera). Two new variants of the K haplotype and two of the J haplotype were found onWestern honeybees in what appeared to be well-established infestations. New haplotypes may represent a potential...
Tipo: Journal Article Palavras-chave: ABEILLE DOMESTIQUE; ACARIEN; VARROA; ADN MITOCHONDRIAL APIS MELLIFERA; APIS CERANA; APIDAE; ACARI; HYMENOPTERA; APIFORMES.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010b31daedc&uri=/notices/prodinra1/2011/03/
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Paralysis of the Honey Bee, Apis mellifera Linnaeus National Institute of Agronomic Research
Bailey, L..
Chronic bee paralysis virus (CBPV) was differentiated from acute bee paralysis virus (ABPV) by the symptoms it caused when injected into normal bees and by histological and serological means. It was isolated from naturally paralyzed bees from various parts of Britain and from Hong Kong, and, in one instance, from normal bees. Overt disease disappeared when the queens of naturally diseased colonies were replaced with others from normal colonies. Normal bees in colonies or cages were resistant to chronic paralysis when sprayed or fed with CBPV. Bees injected with CBPV transmitted it in the food they passed to normal bees.
Tipo: Journal Article-postprint Palavras-chave: APIS MELLIFERA; APIDAE; APIFORMES; HYMENOPTERA; HONEYBEE; SOCIAL INSECT; POLLINATOR; CHRONIC DISEASE; PARALYSIS; HISTOLOGY; SEROLOGY; RESISTANCE; TROPHALLAXIS; VIRUS; ACUTE DISEASE; QUEEN; TRANSMISSION; ABEILLE DOMESTIQUE; INSECTE SOCIAL; POLLINISATEUR; MALADIE CHRONIQUE; PARALYSIE; HISTOLOGIE; SEROLOGIE; TROPHALLAXIE; REINE; MALADIE AIGUE.
Ano: 1965 URL: http://hdl.handle.net/2174/337
Registros recuperados: 8
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