Topic
Varroa sensitive hygiene
About: Varroa sensitive hygiene is a research topic. Over the lifetime, 714 publications have been published within this topic receiving 24928 citations. The topic is also known as: VSH.
Papers published on a yearly basis
Papers
More filters
TL;DR: The conventional technique of analyzing mite reproduction in 17–18 day old worker brood cells considerably overestimates the actual reproductive rate of Varroa destructor.
Abstract: SummaryThe effective reproductive capacity of Varroa destructor in honey bee colonies is currently calculated on the basis of the number of female deutonymphs found in singly infested worker brood cells at 17–18 days (two to three days before the bee emerges). This calculation presumes that the deutonymphs will reach the adult stage by the time that the adult bee ecloses. Some deutonymphs may not, however, reach the adult phase and there also could be mortality. In order to examine this possibility, we studied mite reproduction in worker brood of Africanized honey bee colonies at 17–18 days and then selected eight colonies in which over 90% of the infested brood cells contained a single original female mite. The mean proportion of singly infested worker brood cells in these colonies was 96.3%. Consequently, by subtracting one from the total number of adult female mites found at the time the bee emerged we would be able to estimate the effective reproductive capacity of the original mites, with little erro...
1 citations
Patent•
23 Feb 2000
TL;DR: In this article, the authors proposed a method for reinforcing the bee's natural defences against parasitic diseases, in particular against attacks from varroa mites and other acarine mites living at its expense.
Abstract: The present invention concerns bees and beekeeping, aiming at reinforcing the bee's natural defences against parasitic diseases, in particular against attacks from varroa mites and other acarine mites living at its expense. It enables to compensate the deficiencies occurring during the bee's growth period. For that purpose, elements essential for the bee are restored, for example essential minerals to the surroundings of the hive, where the bees forage flowers for nectar, by enriching or restoring the surrounding grounds with fresh water diatoms.
1 citations
TL;DR: In this paper, the authors used genetically tagged Deformed Wing Virus (DWV) to investigate virus transmission to and between worker bees following pupal cannibalization under experimental conditions, and demonstrated that cannibalization of DWV-infected pupae resulted in high levels of this virus in worker bees and that the acquired virus was then transmitted between bees via trophallaxis, allowing circulation of Varroa-vectored DWV variants without the mites.
Abstract: Transmission routes impact pathogen virulence and genetics, therefore comprehensive knowledge of these routes and their contribution to pathogen circulation is essential for understanding host-pathogen interactions and designing control strategies. Deformed wing virus (DWV), a principal viral pathogen of honey bees associated with increased honey bee mortality and colony losses, became highly virulent with the spread of its vector, the ectoparasitic mite Varroa destructor. Reproduction of Varroa mites occurs in capped brood cells and mite-infested pupae from these cells usually have high levels of DWV. The removal of mite-infested pupae by worker bees, Varroa Sensitive Hygiene (VSH), leads to cannibalization of pupae with high DWV loads, thereby offering an alternative route for virus transmission. We used genetically tagged DWV to investigate virus transmission to and between worker bees following pupal cannibalisation under experimental conditions. We demonstrated that cannibalization of DWV-infected pupae resulted in high levels of this virus in worker bees and that the acquired virus was then transmitted between bees via trophallaxis, allowing circulation of Varroa-vectored DWV variants without the mites. Despite the known benefits of hygienic behaviour, it is possible that higher levels of VSH activity may result in increased transmission of DWV via cannibalism and trophallaxis.
1 citations
TL;DR: The Washington State University Bee Program (Hopkins Lab) as discussed by the authors supports research projects on indoor storage of honey bee colonies through data collection, analysis, publication of peer-reviewed and extension articles, and grant writing activities to support future work.
Abstract: Postdoctoral Research Associate June 2020 – Present Washington State University Bee Program (Hopkins Lab) • Supporting research projects on indoor storage of honey bee colonies through data collection, analysis, publication of peer-reviewed and extension articles, and grant writing activities to support future work • Leading applied research projects directly addressing critical beekeeper needs including new Varroa destructor management options and honey bee protein supplemental feed products • Performing regular extension activities, both written and oral, to communicate beneficial results to stakeholders in real time
1 citations