Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.

The amount of genetic variance underlying a phenotypic trait and the strength of selection acting on that trait are two key parameters that determine any evolutionary response to selection. Despite substantial evidence that, in natural populations, both parameters may vary across environmental condi...

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Autores principales:	Arild Husby, Marcel E Visser, Loeske E B Kruuk
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/fc573e8d7bc3459e9e9bdc2a1b7518e1
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spelling	oai:doaj.org-article:fc573e8d7bc3459e9e9bdc2a1b7518e12021-11-18T05:36:20ZSpeeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.1544-91731545-788510.1371/journal.pbio.1000585https://doaj.org/article/fc573e8d7bc3459e9e9bdc2a1b7518e12011-02-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21408101/pdf/?tool=EBIhttps://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885The amount of genetic variance underlying a phenotypic trait and the strength of selection acting on that trait are two key parameters that determine any evolutionary response to selection. Despite substantial evidence that, in natural populations, both parameters may vary across environmental conditions, very little is known about the extent to which they may covary in response to environmental heterogeneity. Here we show that, in a wild population of great tits (Parus major), the strength of the directional selection gradients on timing of breeding increased with increasing spring temperatures, and that genotype-by-environment interactions also predicted an increase in additive genetic variance, and heritability, of timing of breeding with increasing spring temperature. Consequently, we therefore tested for an association between the annual selection gradients and levels of additive genetic variance expressed each year; this association was positive, but non-significant. However, there was a significant positive association between the annual selection differentials and the corresponding heritability. Such associations could potentially speed up the rate of micro-evolution and offer a largely ignored mechanism by which natural populations may adapt to environmental changes.Arild HusbyMarcel E VisserLoeske E B KruukPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 9, Iss 2, p e1000585 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Arild Husby Marcel E Visser Loeske E B Kruuk Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
description	The amount of genetic variance underlying a phenotypic trait and the strength of selection acting on that trait are two key parameters that determine any evolutionary response to selection. Despite substantial evidence that, in natural populations, both parameters may vary across environmental conditions, very little is known about the extent to which they may covary in response to environmental heterogeneity. Here we show that, in a wild population of great tits (Parus major), the strength of the directional selection gradients on timing of breeding increased with increasing spring temperatures, and that genotype-by-environment interactions also predicted an increase in additive genetic variance, and heritability, of timing of breeding with increasing spring temperature. Consequently, we therefore tested for an association between the annual selection gradients and levels of additive genetic variance expressed each year; this association was positive, but non-significant. However, there was a significant positive association between the annual selection differentials and the corresponding heritability. Such associations could potentially speed up the rate of micro-evolution and offer a largely ignored mechanism by which natural populations may adapt to environmental changes.
format	article
author	Arild Husby Marcel E Visser Loeske E B Kruuk
author_facet	Arild Husby Marcel E Visser Loeske E B Kruuk
author_sort	Arild Husby
title	Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
title_short	Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
title_full	Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
title_fullStr	Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
title_full_unstemmed	Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
title_sort	speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/fc573e8d7bc3459e9e9bdc2a1b7518e1
work_keys_str_mv	AT arildhusby speedingupmicroevolutiontheeffectsofincreasingtemperatureonselectionandgeneticvarianceinawildbirdpopulation AT marcelevisser speedingupmicroevolutiontheeffectsofincreasingtemperatureonselectionandgeneticvarianceinawildbirdpopulation AT loeskeebkruuk speedingupmicroevolutiontheeffectsofincreasingtemperatureonselectionandgeneticvarianceinawildbirdpopulation
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Speeding up microevolution: the effects of increasing temperature on selection and genetic variance in a wild bird population.

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