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- W2134685166 endingPage "20142422" @default.
- W2134685166 startingPage "20142422" @default.
- W2134685166 abstract "Genetic variation in fitness is required for the adaptive evolution of any trait but natural selection is thought to erode genetic variance in fitness. This paradox has motivated the search for mechanisms that might maintain a population's adaptive potential. Mothers make many contributions to the attributes of their developing offspring and these maternal effects can influence responses to natural selection if maternal effects are themselves heritable. Maternal genetic effects (MGEs) on fitness might, therefore, represent an underappreciated source of adaptive potential in wild populations. Here we used two decades of data from a pedigreed wild population of North American red squirrels to show that MGEs on offspring fitness increased the population's evolvability by over two orders of magnitude relative to expectations from direct genetic effects alone. MGEs are predicted to maintain more variation than direct genetic effects in the face of selection, but we also found evidence of maternal effect trade-offs. Mothers that raised high-fitness offspring in one environment raised low-fitness offspring in another environment. Such a fitness trade-off is expected to maintain maternal genetic variation in fitness, which provided additional capacity for adaptive evolution beyond that provided by direct genetic effects on fitness." @default.
- W2134685166 created "2016-06-24" @default.
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- W2134685166 date "2015-05-07" @default.
- W2134685166 modified "2023-09-27" @default.
- W2134685166 title "The nature of nurture in a wild mammal's fitness" @default.
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- W2134685166 doi "https://doi.org/10.1098/rspb.2014.2422" @default.
- W2134685166 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4426606" @default.
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