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| Registros recuperados: 72 | |
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| Welsh, John H.; Nogueira-Neto, Paulo; Jaeger, Celso P.; Ancona Lopez, Ana Amelia. |
| 1) Using several methods, the larval food of Melipona quadrifasciata was found to contain amounts of acetylcholine estimated to range between O. 5 and 2.0 mg. equivalents of acetylcholine chloride per gram of larval food. Similar amounts have been reported for the larval food of the honey, bee, Apis mellifera. 2) The larval food of M. quadrifasciata was also found to contain a large amount of choline and an unidentified substance that was soluble in ethanol, gave a blue fluorescence, reacted with Dragendorf's reagent, and had a weak acetylcholine-like action. In one sample of larval food, a substance with the properties of glycine betaine was also found. 3) Samples of stored pollen were also found to contain acetylcholine, choline and the unidentified... |
| Tipo: Journal Article-postprint |
Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; MELIPONA QUADRAFASCIATA; FOOD; LARVAE; HONEY; ACETYLCHOLINE; NEUROTRANSMITTER; QUANTIFICATION; IDENTIFICATION; POLLEN; ABEILLE DOMESTIQUE; INSECTE SOCIAL; NOURRITURE; LARVE; MIEL; ACETYLCHOLINE; NEUROTRANSMETTEUR; QUANTIFICATION; IDENTIFICATION; POLLEN. |
| Ano: 1965 |
URL: http://hdl.handle.net/2174/353 |
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| Ruffaldi, P.; Ritz, F.; Richard, H.; Dambrine, E.; Dupouey, J.L.. |
| Dans les chênaies développées sur les terrains marneux du Plateau lorrain, on trouve de très nombreuses mardelles tourbeuses à sphaignes, riches et originales sur le plan botanique, dont l’origine est discutée. Le carottage et les datations radiocarbone d’une de ces dépressions montrent deux mètres de remplissage argilo-silteux lité, commençant au VIIe siècle et finissant au XIVe siècle, surmonté de deux mètres de tourbe organique. L’analyse palynologique révèle 4 zones successives. La base du diagramme est caractérisée par un couvert de chênaie-charmaie dense avec des taux de pollen arboréens avoisinant les 85 %. Très rapidement, on note une augmentation des indices polliniques d’anthropisation (Plantago lanceolata, Rumex, Artemisia, Urticacées). La... |
| Tipo: Conference Paper |
Palavras-chave: POLLEN; MARDELLE; HISTOIRE DE L’UTILISATION DES SOLS; LORRAINE; FORET. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009b2ac640e&uri=/notices/prodinra1/2010/11/ |
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| ALAUX, C.; Ducloz, F.; Crauser, D.; Le Conte, Y.. |
| The maintenance of the immune system can be costly, and a lack of dietary protein can increase the susceptibility of organisms to disease. However, few studies have investigated the relationship between protein nutrition and immunity in insects. Here, we tested in honeybees (Apis mellifera) whether dietary protein quantity (monofloral pollen) and diet diversity (polyfloral pollen) can shape baseline immunocompetence (IC) by measuring parameters of individual immunity (haemocyte concentration, fat body content and phenoloxidase activity) and glucose oxidase (GOX) activity, which enables bees to sterilize colony and brood food, as a parameter of social immunity. Protein feeding modified both individual and social IC but increases in dietary protein quantity... |
| Tipo: Journal Article |
Palavras-chave: INSECTE SOCIAL; SYSTEME IMMUNITAIRE; REGIME ALIMENTAIRE; RESSOURCE ALIMENTAIRE SOCIAL INSECT; HONEYBEE; DIET; POLLEN; POLYFLORAL POLLEN; PROTEIN; DISEASE; IMMUNOCOMPETENCE. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20109faf5aef&uri=/notices/prodinra1/2010/11/ |
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| Registros recuperados: 72 | |
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