Добірка наукової літератури з теми "Abeilles – Mortalité"
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Статті в журналах з теми "Abeilles – Mortalité":
FAUCON, Jean-Paul, and Marie-Pierre CHAUZAT. "VARROASE ET AUTRES MALADIES DES ABEILLES : CAUSES MAJEURES DE MORTALITÉ DES COLONIES EN FRANCE." Bulletin de l'Académie vétérinaire de France, no. 1 (2008): 257. http://dx.doi.org/10.4267/2042/47949.
CHAUVIN, Rémy, Jean-Pierre LAFARGE, and Jean-Pierre SALIGOT. "L'INTERVENTION D'UNE HORMONE, LA SURVIVONE, DANS LA MORTALITÉ DES ABEILLES (APIS MELLIFICA L.) ISOLÉES (EFFET DE GROUPE)." Apidologie 16, no. 1 (1985): 77–88. http://dx.doi.org/10.1051/apido:19850108.
"Mortalité des abeilles: un insecticide hors de cause?" Revue Francophone des Laboratoires 2006, no. 386 (November 2006): 8. http://dx.doi.org/10.1016/s1773-035x(06)80548-4.
Hacib, H., and Z. Berkani-Ghalem. "Bioactivité de quelques huiles essentielles par l’évaluation de l’effet acaricide vis-à-vis de la varroase et incidence sur la qualité du miel." Phytothérapie, 2021. http://dx.doi.org/10.3166/phyto-2021-0270.
Rabasse, François, and Christophe Roy. "Enquête sur la perception de la gestion sanitaire chez les apiculteurs en France." Bulletin de l'Académie vétérinaire de France 175 (2022). http://dx.doi.org/10.3406/bavf.2022.70995.
Дисертації з теми "Abeilles – Mortalité":
Sukkar, Dani. "Role of Nosema cerenae and pesticides on the decline of bees : Studies using a multifactorial approach : “Tipping the scale of honeybee immune responses - The effect of pesticides on immune-stimulation mimicking Nosema spp.”." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0086.
Honeybee are facing the global threat of colony collapse disorder (CCD) leading colony deaths and decline in their numbers affecting their environmental and agronomic contribution in pollination of plants and commercial crops in addition to honey production. Pesticide exposure may be of the main causes leading to CCD by weakening the immune system of honeybees and impairing their immune responses. Nosemosis diseases caused by Nosema spp. may have a significant contribution to CCD when bees are exposed to different pesticides simultaneously. Multiple risk factors are assessed in this study including the most used neonicotinoids worldwide, imidacloprid and amitraz which is the pesticide used directly in contact with honeybees to treat mite infection. Th effect of these pesticides is evaluated at the level of immune stimulation by zymosan A to mimic Nosema infection. The effect of pesticides on antimicrobial cells products, cellular responses and related genes' expression are demonstrated
Navone-Nectoux, Myriam. "Toxicologie des dérivés cuivriques proposés en traitement de la varroose de l'abeille, Apis mellifera L." Montpellier 2, 1990. http://www.theses.fr/1990MON20104.
Rollin, Orianne. "Etude multi-échelle du patron de diversité des abeilles et utilisation des ressources fleuries dans un agrosystème intensif." Phd thesis, Université d'Avignon, 2013. http://tel.archives-ouvertes.fr/tel-00993034.
Esnault, Olivier. "Diversité des agents pathogènes de l’abeille dans le Sud-Ouest de l’Océan Indien dans un contexte d’invasion récente de Varroa destructor et mortalités associées." Thesis, La Réunion, 2018. http://www.theses.fr/2018LARE0044/document.
The honeybee (Apis mellifera) is a key species in its native range for both ecosystem services offerred and for bee products. However, its populations are subject to various biotic stressors responsible for significant mortalities. In the South-West Indian Ocean region the endemic bee subspecies is A. m.unicolor. However, no studies had been carried out on its pathosphere and it is only since 2010 where the ectoparasite Varroa destructor invaded some of these islands, threatening this subspecies, that first studies were conducted. In this thesis work, we carried out a general inventory of the health of honeybee herds through descriptive epidemiological surveys in the majority of islands: Réunion, Mauritius, Rodrigues, Madagascar and Seychelles. We were able to show quite similar epidemiological facies between islands, characterized by a dominance of Nosema ceranae especially in small islands (80-100%) and the presence of 3 viruses: BQCV (4-89%), CBPV (2- 51% except in Rodrigues) and DWV (4-40% except in Reunion). Other pathogens have only been found in certain territories such as Aethinatumida, Braula pretoriensis, Acarapis sp. or Melissococcus plutonius. The analysis of the genetic diversity carried out on the 3 viruses showed a proximity of viral strains within the SOOI. Surveys conducted in a context without varroa showed good colony health with no clinical signs. The observed mortalities concerned only the territories invaded by varroa: Madagascar, Mauritius, Reunion. Varroa therefore appears to be the main cause of acute colony mortality in the area long before other pathogens or environmental causes. Its impact on bee populations and ultimately on native ecosystems will be evaluated in future years
Suchail, Séverine. "Étude pharmacocinétique et pharmacodynamique de la létalité induite par l'imidaclopride et ses métabolites chez l'abeille domestique (Apis mellifera L. )." Lyon 1, 2001. http://www.theses.fr/2001LYO1T004.
Dussaubat-Arriagada, Claudia Marcela. "Effets de Nosema ceranae (Microsporidia) sur la santé de l’abeille domestique Apis mellifera L. : changements physiologiques et comportementaux." Thesis, Avignon, 2012. http://www.theses.fr/2012AVIG0641/document.
Nosema ceranae is an emergent parasite of the honey bee Apis mellifera. In some regions it has been found to be the main reason for bee mortality, while in others it is suspected of weakening honey bee colonies by interacting with other environmental stressors. In the context of worldwide colony losses, we focus our research on the study of N. ceranae, with the hypothesis that this parasite is able to induce behavioral changes in bees through physiological modifications, which could alter social organization and cause colony death. Given this hypothesis, the program of study falls into three areas; (i) N. ceranae effects on colony social organization, (ii) molecular mechanisms of N. ceranae infection underlying observed effects, and (iii) differences in virulence of N. ceranae strains which could explain the diversity of parasite effects. We obtained three main results. First, we observed modifications in honey bee social structure after infection. This mechanism under pheromone control, would reduce parasite transmission within the colony and increase the lifespan of healthy bees. These changes may contribute to colony survival as part of a mechanism of social immunity. Second, we found two mechanisms whereby the pathogen affects the physiology of bee midgut epithelium that could lead to host mortality: oxidative stress and the inhibition of cellular renewal. Finally, our results suggest that certain host and environmental conditions increase the probability that N. ceranae will cause bee mortality. In conclusion, N. ceranae has the potential to cause bee death, however at colony level bees might counteract infection through, for example, social immunity mechanisms; although, overall honey bee response to infection would depend on characteristics of the host in combination with environmental conditions. Worldwide colony losses phenomenon have highlighted the fragility of the “honey bee colony – environment” system. The study of each factor involve in this system, including parasites, pesticides, environmental changes and beekeeping practices, is essential to better understand all of the interactions that maintain the ecological balance of honey bee colonies
Claing, Gabrielle. "Prévalence d’agents pathogènes de l’abeille domestique (Apis mellifera) au Québec et leur impact sur la mortalité hivernale." Thèse, 2019. http://hdl.handle.net/1866/23145.