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We investigated the relationship between infestation levels of Nosema ceranae and patriline membership by sampling individual worker bees from five colonies from both Russian and Italian lineages. Individual workers were tested for N. ceranae infestation level using qPCR, and then genotyped to determine their patriline membership. Levels of N. ceranae infestation differed significantly between lineages...
Behavioral responses of Apis cerana, Apis dorsata, and Apis mellifera to the ectoparasitic mite, Tropilaelaps mercedesae, were compared using two laboratory bioassays: cohorts of 50 caged worker bees and individual-caged worker bees, all of unknown ages. For the group bioassays, ten T. mercedesae were placed on the bodies of bees in each cohort. After 6 h, nearly 2/3 of the mites placed on A. cerana...
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