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In dit onderzoek werden 4 onderzoeksmethodes gebuikt om objectieve data te genererenomtrent de vraag of honingbijen (Apis mellifera L.) aardappelbloemen bezoeken om de rolvan honingbijen in de co-existentie van genetisch gemodificeerde aardappelen (Solanumtuberosum L.) te bepalen. De gebruikte methoden waren (1) visuele observaties vanaardappelplanten en de eventuele bijenbezoeken, (2) microscopische analyses vanpollenpakketjes, verzameld door de bijen van bijenkasten die zich in of in de omgeving vaneen aardappelveld bevonden, (3) DNA-analyses met behulp van real-time polymerasekettingreactietechnieken van dezelfde pollenstalen en een aantal honingstalen uit bijenkastendie in of in de omgeving van een aardappelveld stonden en (4) pesticidenresiduanalyse opstalen uit diezelfde bijenkasten. De resultaten waren (1) geen aardappelbloemen bezoekendebijen werden waargenomen, (2) van de meer dan 1.000 gescreende pollenkorrels per preparaatwas er geen enkel afkomstig van aardappel, (3) er werd geen aardappel-DNA gevonden in depollen- en de honingstalen en (4) er bevonden zich geen pesticideresidu's van behandelingenin aardappel in zowel de honing- als de bijenbroodstalen. Als conclusie werden er geenaanwijzingen gevonden dat bijen aardappelbloemen bezoeken om stuifmeel te verzamelen.
Aardappel. --- Apis mellifera L. --- Co-existentie. --- Genetische gemodificeerde aardappelen. --- Honingbij. --- Plantenteelt. --- Solanum tuberosum L. --- T210-toegepaste-mechanica. --- Veredeling.
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A l’échelle européenne, l’entomofaune pollinisatrice souffre des externalités négatives de la seconde révolution agricole, notamment par l’utilisation de produits phytosanitaires et par la diminution drastique tant en abondance qu’en diversité, des ressources mellifères. Cette diminution liée à l’homogénéisation du paysage peut être considérée comme extrêmement préoccupante. La Wallonie n’est pas épargnée et plus de 25% des plantes supérieures sont considérées comme menacées à très menacées. Afin d’envisager des gestions de l’environnement adaptées à l’entomofaune pollinisatrice, telle que la mise en place de programmes de restauration et de conservation visant une ressource nectarifère continue, il est primordial de pouvoir quantifier la ressource mellifère à l’échelle du paysage. Alors que la quantification manuelle est chronophage et ne permet d’échantillonner qu’une faible proportion de la zone étudiée, ce travail de fin d’études présente une méthode de quantification des ressources mellifères à l’échelle du paysage via des moyens de télédétection. Il est démontré dans ce travail qu’il est possible, par l’élaboration d’indices de discrimination issus du traitement d’images aériennes acquises par drone et dotées d’une résolution de 3 cm, de mettre en évidence et de quantifier les floraisons des principales essences mellifères de Wallonie en phénosaison vernale (colza, saules, pissenlits, fruitiers, merisiers, aubépines). La zone d’étude se compose de 3 zones de 2 kms de rayon autour de ruchers expérimentaux situés à Lonzée, Grand-Manil et Corroy-le-Château. Grâce aux travaux de Baude et. al (2016), la ressource nectarifère des classes de paysage échantillonnées est estimée en multipliant le nombre d’unités florales d’une essence recensée (dans la classe échantillonnée) par sa production nectarifère propre. Ensuite, la ressource de la zone d’étude peut être estimée par extrapolation. Les gestionnaires de l’environnement, les chercheurs en biodiversité ou encore les apiculteurs pourront utiliser la méthodologie de quantification nectarifère développée dans ce travail comme outil d’aide à la décision. Dans ce travail, des données cohérentes de production sont obtenues pour les vergers, les prairies et les champs de colza. Sur une période de 6 semaines, ces productions nectarifères du paysage sont ensuite mises en relation selon un pas de temps hebdomadaire, avec différentes variables mesurées sur les 3 ruchers : • Le gain horaire moyen en nectar et en pollen, déterminé à partir de données de poids acquises à intervalles réguliers de 30 minutes VI • La diversité des rentrées en pollen • La mortalité moyenne • L’infestation moyenne au varroa Afin de tenir compte du développement des colonies d’abeilles, ces variables sont standardisées pour une quantité de 15 000 butineuses et prélevées au départ d’enregistrements effectués pour des journées durant lesquelles les conditions météorologiques sont similaires. Le nombre d’abeilles butineuses sortant chaque matin de la ruche est déterminé par l’analyse de la dérivée temporelle de la courbe du poids de cette ruche. Les résultats de la comparaison mettent en évidence plusieurs relations, notamment entre les gains en pollen et la production nectarifère des classes « verger » et « prairie » du rucher « moyen », ce qui permettrait de supposer qu’il existe un lien entre la quantification des ressources florales réalisée par télédétection et la ressource florale réellement présente sur le terrain. De plus, certaines relations peuvent être supposées entre la production de nectar du colza et des vergers avec les traits biologiques des colonies d’abeilles Apis mellifera L., notamment en ce qui concerne le nombre de butineuses et la mortalité larvaire des colonies.
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Over the past decade, the worldwide decline in honey bee populations has been an important issue due to its implications for beekeeping and honey production. Honey bee pathologies are continuously studied by researchers, in order to investigate the host–parasite relationship and its effect on honey bee colonies. For these reasons, the interest of the veterinary community towards this issue has increased recently, and honey bee health has also become a subject of public interest. Bacteria, such as Melissococcus plutonius and Paenibacillus larvae, microsporidia, such as Nosema apis and Nosema ceranae, fungi, such as Ascosphaera apis, mites, such as Varroa destructor, predatory wasps, including Vespa velutina, and invasive beetles, such as Aethina tumida, are “old” and “new” subjects of important veterinary interest. Recently, the role of host–pathogen interactions in bee health has been included in a multifactorial approach to the study of these insects’ health, which involves a dynamic balance among a range of threats and resources interacting at multiple levels. The aim of this Special Issue is to explore honey bee health through a series of research articles that are focused on different aspects of honey bee health at different levels, including molecular health, microbial health, population genetic health, and the interaction between invasive species that live in strict contact with honey bee populations.
Research & information: general --- text-mining --- topic modeling --- colony collapse disorder --- genomics --- Varroa mite --- honey bee health --- Apis mellifera --- GABA --- beta-alanine --- oxalic acid --- diet effect --- microbiota --- bee --- silicone band --- hive --- passive sampler --- honey bee --- virus --- DWV-A --- hive products --- honey --- pollen --- wax --- Nosema ceranae --- Nosema apis --- epidemiology --- replacement --- ecoregions --- North Asia --- DNA analysis --- health --- Lotmaria passim --- Melissococcus plutonius --- pathology --- Tropilaelaps --- Varroa destructor --- honey bees --- mites --- viruses --- behavior --- social immunity --- Africanized bees --- microsatellites --- Uruguay --- honeybee --- One-Health --- nexus --- landscape --- beekeeper --- pathogens --- histopathology --- testes --- microsporidia --- Hsp70 gene --- 16S rRNA gene --- garlic --- viability --- prevalence --- infection intensity --- seasonality --- bee longevity --- bee population --- honey stores --- CCD --- mite --- reproductive rate --- worker brood --- infestation level --- longevity --- distribution --- model --- honey bee model --- grooming --- drones --- chronic bee paralysis virus --- Varroa infestation control --- nosemosis --- hairless black syndrome --- honeybee veterinary medicine --- acute bee paralysis --- chronic bee paralysis --- deformed wing virus --- varroa infestation --- honey bee losses --- viral diseases --- nosematosis --- negative pressures --- bee hive monitoring --- real-time monitoring --- sound measurement --- swarming detection --- queen bee detection --- sound analysis --- acaricides --- primer pheromone --- hydrocarbon profiles --- survival --- Nosema disease --- dark forest bee --- Apis mellifera mellifera --- microsatellite loci --- association --- gut microbiota --- gut mycobiota --- season --- Apis mellifera L. --- unicellular --- n/a
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Over the past decade, the worldwide decline in honey bee populations has been an important issue due to its implications for beekeeping and honey production. Honey bee pathologies are continuously studied by researchers, in order to investigate the host–parasite relationship and its effect on honey bee colonies. For these reasons, the interest of the veterinary community towards this issue has increased recently, and honey bee health has also become a subject of public interest. Bacteria, such as Melissococcus plutonius and Paenibacillus larvae, microsporidia, such as Nosema apis and Nosema ceranae, fungi, such as Ascosphaera apis, mites, such as Varroa destructor, predatory wasps, including Vespa velutina, and invasive beetles, such as Aethina tumida, are “old” and “new” subjects of important veterinary interest. Recently, the role of host–pathogen interactions in bee health has been included in a multifactorial approach to the study of these insects’ health, which involves a dynamic balance among a range of threats and resources interacting at multiple levels. The aim of this Special Issue is to explore honey bee health through a series of research articles that are focused on different aspects of honey bee health at different levels, including molecular health, microbial health, population genetic health, and the interaction between invasive species that live in strict contact with honey bee populations.
text-mining --- topic modeling --- colony collapse disorder --- genomics --- Varroa mite --- honey bee health --- Apis mellifera --- GABA --- beta-alanine --- oxalic acid --- diet effect --- microbiota --- bee --- silicone band --- hive --- passive sampler --- honey bee --- virus --- DWV-A --- hive products --- honey --- pollen --- wax --- Nosema ceranae --- Nosema apis --- epidemiology --- replacement --- ecoregions --- North Asia --- DNA analysis --- health --- Lotmaria passim --- Melissococcus plutonius --- pathology --- Tropilaelaps --- Varroa destructor --- honey bees --- mites --- viruses --- behavior --- social immunity --- Africanized bees --- microsatellites --- Uruguay --- honeybee --- One-Health --- nexus --- landscape --- beekeeper --- pathogens --- histopathology --- testes --- microsporidia --- Hsp70 gene --- 16S rRNA gene --- garlic --- viability --- prevalence --- infection intensity --- seasonality --- bee longevity --- bee population --- honey stores --- CCD --- mite --- reproductive rate --- worker brood --- infestation level --- longevity --- distribution --- model --- honey bee model --- grooming --- drones --- chronic bee paralysis virus --- Varroa infestation control --- nosemosis --- hairless black syndrome --- honeybee veterinary medicine --- acute bee paralysis --- chronic bee paralysis --- deformed wing virus --- varroa infestation --- honey bee losses --- viral diseases --- nosematosis --- negative pressures --- bee hive monitoring --- real-time monitoring --- sound measurement --- swarming detection --- queen bee detection --- sound analysis --- acaricides --- primer pheromone --- hydrocarbon profiles --- survival --- Nosema disease --- dark forest bee --- Apis mellifera mellifera --- microsatellite loci --- association --- gut microbiota --- gut mycobiota --- season --- Apis mellifera L. --- unicellular --- n/a
Choose an application
Over the past decade, the worldwide decline in honey bee populations has been an important issue due to its implications for beekeeping and honey production. Honey bee pathologies are continuously studied by researchers, in order to investigate the host–parasite relationship and its effect on honey bee colonies. For these reasons, the interest of the veterinary community towards this issue has increased recently, and honey bee health has also become a subject of public interest. Bacteria, such as Melissococcus plutonius and Paenibacillus larvae, microsporidia, such as Nosema apis and Nosema ceranae, fungi, such as Ascosphaera apis, mites, such as Varroa destructor, predatory wasps, including Vespa velutina, and invasive beetles, such as Aethina tumida, are “old” and “new” subjects of important veterinary interest. Recently, the role of host–pathogen interactions in bee health has been included in a multifactorial approach to the study of these insects’ health, which involves a dynamic balance among a range of threats and resources interacting at multiple levels. The aim of this Special Issue is to explore honey bee health through a series of research articles that are focused on different aspects of honey bee health at different levels, including molecular health, microbial health, population genetic health, and the interaction between invasive species that live in strict contact with honey bee populations.
Research & information: general --- text-mining --- topic modeling --- colony collapse disorder --- genomics --- Varroa mite --- honey bee health --- Apis mellifera --- GABA --- beta-alanine --- oxalic acid --- diet effect --- microbiota --- bee --- silicone band --- hive --- passive sampler --- honey bee --- virus --- DWV-A --- hive products --- honey --- pollen --- wax --- Nosema ceranae --- Nosema apis --- epidemiology --- replacement --- ecoregions --- North Asia --- DNA analysis --- health --- Lotmaria passim --- Melissococcus plutonius --- pathology --- Tropilaelaps --- Varroa destructor --- honey bees --- mites --- viruses --- behavior --- social immunity --- Africanized bees --- microsatellites --- Uruguay --- honeybee --- One-Health --- nexus --- landscape --- beekeeper --- pathogens --- histopathology --- testes --- microsporidia --- Hsp70 gene --- 16S rRNA gene --- garlic --- viability --- prevalence --- infection intensity --- seasonality --- bee longevity --- bee population --- honey stores --- CCD --- mite --- reproductive rate --- worker brood --- infestation level --- longevity --- distribution --- model --- honey bee model --- grooming --- drones --- chronic bee paralysis virus --- Varroa infestation control --- nosemosis --- hairless black syndrome --- honeybee veterinary medicine --- acute bee paralysis --- chronic bee paralysis --- deformed wing virus --- varroa infestation --- honey bee losses --- viral diseases --- nosematosis --- negative pressures --- bee hive monitoring --- real-time monitoring --- sound measurement --- swarming detection --- queen bee detection --- sound analysis --- acaricides --- primer pheromone --- hydrocarbon profiles --- survival --- Nosema disease --- dark forest bee --- Apis mellifera mellifera --- microsatellite loci --- association --- gut microbiota --- gut mycobiota --- season --- Apis mellifera L. --- unicellular
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