The effect of pathogens on selection against deleterious mutations in Drosophila melanogaster

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Abstract

In natural populations, fitness is reduced by both deleterious mutations and parasites. Few studies have examined interactions between these two factors, particularly at the level of individual genes. We examined how the presence of a bacterial pathogen, Pseudomonas aeruginosa, affected the selection against each of eight deleterious mutations in Drosophila melanogaster. We found that mutations tended to become more deleterious in the presence of disease. This increase in the average selection was primarily due to three genes with the remainder showing little evidence of change. © 2009 European Society For Evolutionary Biology.

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Young, J. A., Yourth, C. P., & Agrawal, A. F. (2009). The effect of pathogens on selection against deleterious mutations in Drosophila melanogaster. Journal of Evolutionary Biology, 22(10), 2125–2129. https://doi.org/10.1111/j.1420-9101.2009.01830.x

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