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Lifespan of Apis mellifera carnica Pollm. infested by Varroa jacobson Oud. in relation to season and extent of infestation

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Journal of Apicultural Research
Vol. 27 (4) pp. 230-238
Date
June 1988
Article Title

Lifespan of Apis mellifera carnica Pollm. infested by Varroa jacobson Oud. in relation to season and extent of infestation

Author(s)

Helmut Kovac And Karl Crailsheim

Abstract

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. 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.

Keywords

Varroa, Varroa jacobsoni, Apis mellifera Carnica,

 
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