Effect of some characters on the population growth of mite Varroa jacobsoni in Apis mellifera L colonies and results of a bi‐directional selection

@article{Lodesani2002EffectOS,
  title={Effect of some characters on the population growth of mite Varroa jacobsoni in Apis mellifera L colonies and results of a bi‐directional selection},
  author={Marco Lodesani and Karl Crailsheim and R. F. A. Moritz},
  journal={Journal of Applied Entomology},
  year={2002},
  volume={126},
  url={https://api.semanticscholar.org/CorpusID:14684496}
}
Two lines of honey bees were selectively propagated by instrumental insemination using the population growth of the Varroa mite as a criteria and there was a positive significant correlation between the total mites in the colonies and the amount of reared brood.
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33 Citations
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33 Citations

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Descriptive Analysis of the Varroa Non-Reproduction Trait in Honey Bee Colonies and Association with Other Traits Related to Varroa Resistance

Although MNR is amongst the most popular varroa resistance estimates in field studies, its underlying complex mechanism is not fully understood and its lack of correlation with better described resistance traits and low repeatability suggest that MNR needs to be interpreted cautiously, especially when used for selection.

How the Infestation Level of Varroa destructor Affects the Distribution Pattern of Multi-Infested Cells in Worker Brood of Apis mellifera

Findings could improve sampling methods and the timing of mite treatments in apiaries, thus favoring sustainable management strategies, and Varroa fertility and adult bee longevity decreased as multi-infestation levels increased, and the implications of this relationship are discussed.

Variable Population Growth of Varroa destructor (Mesostigmata: Varroidae) in Colonies of Honey Bees (Hymenoptera: Apidae) During a 10-Year Period

Reduced growth rates were probably the result of diminished reproductive rates by varroa mites during periods of hot and dry weather, which suggested possible climatic or environmental effects on mite growth.

Advances and perspectives in selecting resistance traits against the parasitic mite Varroa destructor in honey bees

Improved knowledge of the mechanisms underlying resistance to V. destructor to increase trait relevance, optimizing selection programs to reduce environmental effects, and communicating selection outcomes are all crucial to efforts aiming at establishing a balanced relationship between the invasive parasite and its new host.

Simplified methods of evaluating colonies for levels of Varroa Sensitive Hygiene (VSH)

Varroa Sensitive Hygiene is a trait of honey bees, Apis mellifera, that supports resistance to Varroa destructor mites and simpler and shorter-term measures of uncapping, recapping, and reductions in infestation and mite fertility may facilitate selection of VSH by more bee breeders.

The effect of temperature and humidity on grooming behaviour of honeybee, Apis mellifera (Hym.: Apidae) colonies against varroa mite, Varroa destructor (Acari: Varroidae)

The results showed significant differences in the ability of the two groups of bees to groom mites off their bodies and that the relative effectiveness of the grooming was dependent upon the combination of temperature and humidity to which they were exposed.

79 References

Development of Varroa jacobsoni in colonies of Apis mellifera capensis and Apis mellifera carnica.

A more efficient grooming activity, in combination with the short post-capping stage of the brood, may be the central factors for the restricted development of the mite population in A m capensis colonies.

Removal of Varroa jacobsoni infested brood in honey bee colonies with differing pollen stores

Findings indicate that the presence of pollen stores increases the rate of cell removal, and warrants investigation into colony management as a potential means of V. jacobsoni infestation control.

Average number of reproductive cycles performed by Varroa jacobsoni in honey bee (Apis mellifera) colonies

A new experimental method is described for studying the number of reproductive cycles in the mites' biology in order to resolve the problem of rapid build up of mite populations in Apis mellifera colonies.

A study on different kinds of damage to Varroa jacobsoni in Apis mellifera ligustica colonies

SUMMARYThe kinds of damage found on Varroa jacobsoni located in worker brood, on adult honey bees, on the bottom board (floorboard) traps and in Gary traps, were investigated in Apis mellifera…

Variance and heritability of the capped developmental stage in European Apis mellifera L. and its correlation with increased Varroa jacobsoni Oud. infestation.

A time-saving method for determining the duration of the capped stage (sealed brood) of large numbers of colonies of European honeybee races covering 22 different origins and hybrids is described.

Selection for varroatosis resistance in honeybees.

Heritability in Honey Bees (Hymenoptera: Apidae) of Characteristics Associated with Resistance to Varroa jacobsoni(Mesostigmata: Varroidae)

The results suggest that it should be possible to enhance the expression of 4 of these 5 characteristics with selective breeding of bees, thus reinforcing confidence in the ability to breed honey bees for resistance to V. jacobsoni.

Number of reproductive cycles of Varroa jacobsoni in honey-bee (Apis mellifera) colonies

An experimental design is described to estimate the number of reproductive cycles where mites are transferred to new mite-free colonies for reproduction in sealed brood cells and shows that the reproductive success of Varroa females going into cells to reproduce is not influenced by previous brood cycles.

Ontogenesis of the mite Varroa jacobsoni Oud. in worker brood of the honeybee Apis mellifera L. under natural conditions

It was found that each V. jacobsoni female could deposit five or sometimes six larvae in a worker cell, of which four (1 male and 3 females) may reach maturity before the bee emerged from its cell, however, mortality of the offspring resulted in only 1.45 female offspring reaching maturity for each normally reproducing mother mite.

Non-reproducing Varroa jacobsoni Oud. in honey bee worker cells—status of mites or effect of brood cells?

Differences in this trait are only to a minor degree related to differences between bee lines in the ability of the bee brood to induce oviposition, and seem rather to depend on other, unknown colony factors influencing the reproductive state of Varroa when they enter cells for reproduction.
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