Dissection of the mutation accumulation process during bacterial range expansions
نویسندگان
چکیده
منابع مشابه
Accumulation of Deleterious Mutations During Bacterial Range Expansions
Recent theory predicts that the fitness of pioneer populations can decline when species expand their range, due to high rates of genetic drift on wave fronts making selection less efficient at purging deleterious variants. To test these predictions, we studied the fate of mutator bacteria expanding their range for 1650 generations on agar plates. In agreement with theory, we find that growth ab...
متن کاملOn the accumulation of deleterious mutations during range expansions.
We investigate the effect of spatial range expansions on the evolution of fitness when beneficial and deleterious mutations cosegregate. We perform individual-based simulations of 1D and 2D range expansions and complement them with analytical approximations for the evolution of mean fitness at the edge of the expansion. We find that deleterious mutations accumulate steadily on the wave front du...
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The Fate of Cooperation during Range Expansions
Species expand their geographical ranges following an environmental change, long range dispersal, or a new adaptation. Range expansions not only bring an ecological change, but also affect the evolution of the expanding species. Although the dynamics of deleterious, neutral, and beneficial mutations have been extensively studied in expanding populations, the fate of alleles under frequency-depe...
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ژورنال
عنوان ژورنال: BMC Genomics
سال: 2020
ISSN: 1471-2164
DOI: 10.1186/s12864-020-6676-z