Genetic dominance and worker interactions affect honeybee colony defense |
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Authors: | Guzman-Novoa Ernesto; Page Robert E Jr |
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Institution: | Department of Entomology, University of California Davis, CA 95616, USA |
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Abstract: | Colonies of honeybees (Apis mellifera L.) were established thatvaried in the proportions of their workers that were of Europeanand hybrid (Africanized x European) descent. Colony defensiveresponses increased with higher proportions of hybrid workers.Colonies consisting exclusively of hybrid workers did not differin their response from "pure" Africanized colonies, suggestingthat the strong defensive behavior of Africanized workers isgenetically dominant. European workers became more defensivein colonies that also contained hybrid workers, whereas hybridworkers became less defensive in the same mixed colonies. Inmixed colonies hybrid workers were individually more likelythan Europeans to sting a leather target but not more likelyto guard the entrance. |
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Keywords: | Apis mellifera colony defense defensive behavior honeybees worker interaction |
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