Host resistance does not explain variation in incidence of male-killing bacteria in Drosophila bifasciata

作者: Zoe Veneti , Masanori J Toda , Gregory DD Hurst

DOI: 10.1186/1471-2148-4-52

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摘要: Selfish genetic elements that distort the sex ratio are found widely. Notwithstanding number of records distorters, their incidence is poorly understood. Two factors can prevent a distorter from invading: inability to function (failure mechanism or transmission), and lack drive if they do (inappropriate ecology for invasion). There has been no test date on causing variation in distorting cytoplasmic bacteria. We therefore examined whether absence male-killing Wolbachia infection D. bifasciata Hokkaido island Japan, contrast presence proximal Honshu, was associated with failure properly background. The male-killer both transmitted functioned well following introgression each 24 independent isofemale inbred lines carrying backgrounds. This maintained even under stringent conditions temperature. reject hypothesis due its kill males transmit Further trap data indicates may occur at different densities Honshu populations, giving some credence idea ecological differentiation could be important. population not caused by

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