Journal ArticleDOI
Lifespan of Apis Mellifera Carnica Pollm. Infested by Varroa Jacobsoni Oud. in Relation to Season and Extent of Infestation
Helmut Kovac,Karl Crailsheim +1 more
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Longevity, duration of hive-bound period, and foraging period, of worker bees, infested or not infested during their pupal development, were investigated during the whole year; shortening of lifespan depended on the extent of infestation and on season.Abstract:
SummaryLongevity, duration of hive-bound period, and foraging period, of worker bees, infested or not infested during their pupal development, were investigated during the whole year. Shortening of lifespan depended on the extent of infestation and on season. Influence of infestation on lifespan could be shown during hive-bound and foraging periods; no influence could be shown on flight activity. Drastic differences occurred during winter; in 4 observation hives, only 4–18% of the infested bees that had emerged in September, survived until the following March.read more
Citations
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Journal ArticleDOI
Varroa mites and honey bee health: can Varroa explain part of the colony losses?
TL;DR: This work addresses the question of how Varroa contributes to the recent surge in honey bee colony losses and describes the interactions between different stresses involved.
Book ChapterDOI
Honey bee viruses.
Yanping Chen,Reinhold Siede +1 more
TL;DR: This chapter summarizes recent progress in the understanding of the morphology, genome organization, transmission, epidemiology, and pathogenesis of honey bee viruses as well as their interactions with their honey bee hosts.
Journal ArticleDOI
The transmission of deformed wing virus between honeybees (Apis mellifera L.) by the ectoparasitic mite varroa jacobsoni Oud
TL;DR: A positive relationship was found between increasing numbers of mites on individual bees and the incidence of morphological deformity and death and that much of the pathology previously associated with the effects of mite feeding could be attributed directly to secondary pathogens vectored by V. jacobsoni.
Journal ArticleDOI
Dead or alive: Deformed Wing Virus and Varroa destructor reduce the life span of winter honeybees
TL;DR: The findings strongly suggest that V. destructor and DWV reduce the life span of winter bees, thereby constituting a parsimonious possible mechanism for honeybee colony losses.
Journal ArticleDOI
Molecular and Biological Characterization of Deformed Wing Virus of Honeybees (Apis mellifera L.)
Gaetana Lanzi,Joachim R. de Miranda,Joachim R. de Miranda,Maria Beatrice Boniotti,Craig E. Cameron,Antonio Lavazza,Lorenzo Capucci,Scott Camazine,Scott Camazine,C Rossi +9 more
TL;DR: The genome organization, capsid morphology, and sequence comparison data indicate that DWV is a member of the recently established genus Iflavirus, which is closely associated with characteristic wing deformities, abdominal bloating, paralysis, and rapid mortality of emerging adult bees.
References
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Journal ArticleDOI
Ein Beitrag zur Frage der Arbeitsteilung im Bienenstaat
TL;DR: In Dauerbeobachtungen wurde der Lebenslauf einer einzelnen Biene verfolgt as mentioned in this paper, where sie innerhalb einer Zelle with Zellenputzen, Brutpflege and Bauen sich beschaftigten.
Journal ArticleDOI
Dependence of the life span of the honeybee ( Apis mellifica ) upon flight performance and energy consumption
TL;DR: The results indicate that bees exhaust their energysupplying mechanisms after a definite total flight performance, and young foragers are able to restore glycogen reserves after sugar intake, whereas old foragers were found to have a reduced glycogen synthesizing ability.
Journal ArticleDOI
Weight Loss and Other Damage to Developing Worker Honeybees from Infestation with Varroa Jacobsoni
TL;DR: The type and degree of damage to adult workers of Apis mellifera from infestation with the parasitic mite Varroa jacobsoni during development was investigated and mean weights of infested bees upon emergence as adults were 6·3% to 25% less than for healthy bees.