Pathogen-induced rapid evolution in a vertebrate life-history trait.

Abstract : Anthropogenic factors, including climate warming, are increasing the incidence and prevalence of infectious diseases worldwide. Infectious diseases caused by pathogenic parasites can have severe impacts on host survival, thereby altering the selection regime and inducing evolutionary responses in their hosts. Knowledge about such evolutionary consequences in natural populations is critical to mitigate potential ecological and economic effects. However, studies on pathogen-induced trait changes are scarce and the pace of evolutionary change is largely unknown, particularly in vertebrates. Here, we use a time series from long-term monitoring of perch to estimate temporal trends in the maturation schedule before and after a severe pathogen outbreak. We show that the disease induced a phenotypic change from a previously increasing to a decreasing size at maturation, the most important life-history transition in animals. Evolutionary rates imposed by the pathogen were high and comparable to those reported for populations exposed to intense human harvesting. Pathogens thus represent highly potent drivers of adaptive phenotypic evolution in vertebrates.
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Article dans une revue
Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2011, 278 (1702), pp.35-41. 〈10.1098/rspb.2010.0960〉
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https://hal-bioemco.ccsd.cnrs.fr/bioemco-00552970
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Soumis le : jeudi 6 janvier 2011 - 11:40:01
Dernière modification le : jeudi 11 janvier 2018 - 06:21:30

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Jan Ohlberger, Øystein Langangen, Eric Edeline, Esben Moland Olsen, Ian J Winfield, et al.. Pathogen-induced rapid evolution in a vertebrate life-history trait.. Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2011, 278 (1702), pp.35-41. 〈10.1098/rspb.2010.0960〉. 〈bioemco-00552970〉

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