Introduction Varroa destructor Anderson & Trueman (2000) is an ectoparasitic mite which causes severe damage to Apis mellifera populations worldwide. Adult females of V. destructor feed directly on the haemolymph of honey bee pupae and can activate and transmit honeybee viruses. Infestation causes an increased prevalence of bee diseases and colony mortality, resulting in decline of honey produc...

Varroa destructor is a ubiquitous and parasitic mite of honey bees, infecting them with pathogenic viruses having a major impact on apiculture. We identified two novel circular replication-associated protein (Rep)-encoding single-stranded (CRESS) DNA viruses from V. destructor sampled from a honey bee hive near Christchurch in New Zealand.

Seit Auftreten des Parasiten Varroa destructor in Bienenvölkern von Apis mellifera müssen Imker regelmäßig Akarizide einsetzen, um den Ektoparasiten unterhalb der Schadensschwelle zu halten. Zur Bekämpfung sind vorwiegend Coumafos und synthetische Pyrethroide verwendet worden. In den letzten 10 Jahren entwickelten sich in Europa zunehmend Resistenzen der Milben gegenüber den synthetischen Akari...

Varroa destructor is the most serious threat for western honeybees worldwide. It parasitizes mostly on honeybee's pupae and larvae, resulting in impaired development, decreased immunity, residual wings, loss of flight ability, even direct death. At same time, it can cause a series diseases, greatly infesting bee colonies. This paper introduces classification, distribution biological characteris...

Cet article interroge la façon dont les apiculteur·rice·s font face à crise de biodiversité qui, décimant insectes depuis quelques décennies, touche plein fouet abeilles domestiques. Nous nous demandons comment est assurée survie des domestiques dans un monde où ressources en fleurs et eau se raréfient. À partir d’une présentation trois portraits issus enquête ethnographique menée le milieu l’a...

Abstract Suppressed mite reproduction (SMR) is an important trait for the selection of Varroa resistant honey bee colonies. It has repeatedly been assumed that SMR effect varroa sensitive hygiene (VSH) when hygienic bees preferably remove those brood cells where reproduced. We here compare VSH behaviour toward artificial infested with a mite. By infesting half directly after cell capping and ot...

The two haplotypes of Varroa destructor that have been identified as parasites of the Western honeybee (Apis mellifera L.) show disparate levels of virulence towards honeybee colonies. The Korea haplotype has been associated with severe colony mortality, whereas untreated colonies of European A. mellifera have survived long-term infestation by the Japan haplotype. The possible existence of a be...

At least two parasitic mites have moved from Asian species of honeybees to infest Apis mellifera. Of these two, Varroa destructor is more widespread globally while Tropilaelaps mercedesae has remained largely in Asia. Tropilaelaps mites are most problematic when A. mellifera is managed outside its native range in contact with Asian species of Apis. In areas where this occurs, beekeepers of A. m...

Our research was concentrated on the finding one of Varroa destructor mite with pathological symptoms and on the isolation of its microorganisms. The dead mites were collected from sticky boards in beehives and observed under the stereomicroscope. The mites suspected of dying caused by pathological process were examined by means of bacteriological and mycological methods. The pathogenity of iso...