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dc.contributor.authorBeekman, M.
dc.contributor.authorAllsopp, M.H.
dc.contributor.authorHolmes, M.J.
dc.contributor.authorLim, J.
dc.contributor.authorNoach-Pienaar, L.A.
dc.contributor.authorWossler, T.C.
dc.contributor.authorOldroyd, B.P.
dc.date.accessioned2013-02-19T10:07:24Z
dc.date.available2013-02-19T10:07:24Z
dc.date.issued2012
dc.identifier.citationBeekman, M., Allsopp, M.H., Holmes, M.J., Lim, J., Noach-Pienaar, L.A., Wossler, T.C. and Oldroyd, B.P. (2012). Racial mixing in South African honeybees: The effects of genotype mixing on reproductive traits of workers. Behavioral Ecology and Sociobiology 66, 897-904.en
dc.identifier.urihttp://hdl.handle.net/123456789/1204
dc.description.abstractTo test the hypothesis that the honeybee hybrid zone in South Africa is a tension zone due to increased reproductive conflict in colonies that contain both Apis mellifera capensis and Apis mellifera scutellata worker genotypes, we constructed mixed subspecies and hybrid colonies via a combination of artificial and natural matings.We measured emergence weight, ovary activation, and the presence/absence of a spermatheca on workers of different genotypes. We show that the measured characteristics were all affected by genotype with some traits also affected by the social environment in which the worker was reared. Workers with both an A. m. capensis mother and father had the highest emergence weight.When workers had an A. m. capensis mother, paternity affected emergence weight with A. m. capensis fathers producing heavier workers. When the queen was A. m. scutellata, paternity had less effect on weight. Presence of spermatheca was highest in mixed colonies irrespective of maternity and colonies containing pure A. m. capensis workers only. Paternity had a significant effect on the presence of a spermatheca within mixed colonies, with workers that had an A. m. capensis father being more likely to possess a spermatheca. Rates of ovary activation were highest in colonies with an A. m. scutellata queen mated to drones of both genotypes, suggesting that mixed subspecies colonies likely suffer increased reproductive strife among workers. Our results provide support for the hypothesis that the South African honeybee hybrid zone is a tension zone arising from reduced fitness of genetically mixed colonies.en
dc.format.extent536521 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.subjectApis mellifera capensisen
dc.subjectApis mellifera scutellataen
dc.subjectHybrid zoneen
dc.subjectTension zoneen
dc.subjectReproductive conflicten
dc.subjectSocial parasitismen
dc.subjectWorker reproductionen
dc.titleRacial mixing in South African honeybees: the effects of genotype mixing on reproductive traits of workersen
dc.typeJournalArticlesen
dc.cibjournalBehavioral Ecology and Sociobiologyen
dc.cibprojectNAen


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