Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar)
Major histocompatibility complex (MHC)-dependent mating preferences have been observed across vertebrate taxa and these preferences are expected to promote offspring disease resistance and ultimately, viability. However, little empirical evidence linking MHC-dependent mate choice and fitness is avai...
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ftpubmed:oai:pubmedcentral.nih.gov:3223684 2023-05-15T15:30:27+02:00 Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) Evans, Melissa L. Dionne, Mélanie Miller, Kristina M. Bernatchez, Louis 2012-01-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223684 http://www.ncbi.nlm.nih.gov/pubmed/21697172 https://doi.org/10.1098/rspb.2011.0909 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223684 http://www.ncbi.nlm.nih.gov/pubmed/21697172 http://dx.doi.org/10.1098/rspb.2011.0909 This journal is © 2011 The Royal Society Research Articles Text 2012 ftpubmed https://doi.org/10.1098/rspb.2011.0909 2013-09-03T23:03:11Z Major histocompatibility complex (MHC)-dependent mating preferences have been observed across vertebrate taxa and these preferences are expected to promote offspring disease resistance and ultimately, viability. However, little empirical evidence linking MHC-dependent mate choice and fitness is available, particularly in wild populations. Here, we explore the adaptive potential of previously observed patterns of MHC-dependent mate choice in a wild population of Atlantic salmon (Salmo salar) in Québec, Canada, by examining the relationship between MHC genetic variation and adult reproductive success and offspring survival over 3 years of study. While Atlantic salmon choose their mates in order to increase MHC diversity in offspring, adult reproductive success was in fact maximized between pairs exhibiting an intermediate level of MHC dissimilarity. Moreover, patterns of offspring survival between years 0+ and 1+, and 1+ and 2+ and population genetic structure at the MHC locus relative to microsatellite loci indicate that strong temporal variation in selection is likely to be operating on the MHC. We interpret MHC-dependent mate choice for diversity as a likely bet-hedging strategy that maximizes parental fitness in the face of temporally variable and unpredictable natural selection pressures. Text Atlantic salmon Salmo salar PubMed Central (PMC) Canada Proceedings of the Royal Society B: Biological Sciences 279 1727 379 386 |
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Research Articles |
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Research Articles Evans, Melissa L. Dionne, Mélanie Miller, Kristina M. Bernatchez, Louis Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
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Research Articles |
description |
Major histocompatibility complex (MHC)-dependent mating preferences have been observed across vertebrate taxa and these preferences are expected to promote offspring disease resistance and ultimately, viability. However, little empirical evidence linking MHC-dependent mate choice and fitness is available, particularly in wild populations. Here, we explore the adaptive potential of previously observed patterns of MHC-dependent mate choice in a wild population of Atlantic salmon (Salmo salar) in Québec, Canada, by examining the relationship between MHC genetic variation and adult reproductive success and offspring survival over 3 years of study. While Atlantic salmon choose their mates in order to increase MHC diversity in offspring, adult reproductive success was in fact maximized between pairs exhibiting an intermediate level of MHC dissimilarity. Moreover, patterns of offspring survival between years 0+ and 1+, and 1+ and 2+ and population genetic structure at the MHC locus relative to microsatellite loci indicate that strong temporal variation in selection is likely to be operating on the MHC. We interpret MHC-dependent mate choice for diversity as a likely bet-hedging strategy that maximizes parental fitness in the face of temporally variable and unpredictable natural selection pressures. |
format |
Text |
author |
Evans, Melissa L. Dionne, Mélanie Miller, Kristina M. Bernatchez, Louis |
author_facet |
Evans, Melissa L. Dionne, Mélanie Miller, Kristina M. Bernatchez, Louis |
author_sort |
Evans, Melissa L. |
title |
Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
title_short |
Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
title_full |
Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
title_fullStr |
Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the Atlantic salmon (Salmo salar) |
title_sort |
mate choice for major histocompatibility complex genetic divergence as a bet-hedging strategy in the atlantic salmon (salmo salar) |
publisher |
The Royal Society |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223684 http://www.ncbi.nlm.nih.gov/pubmed/21697172 https://doi.org/10.1098/rspb.2011.0909 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3223684 http://www.ncbi.nlm.nih.gov/pubmed/21697172 http://dx.doi.org/10.1098/rspb.2011.0909 |
op_rights |
This journal is © 2011 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2011.0909 |
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Proceedings of the Royal Society B: Biological Sciences |
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279 |
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1727 |
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379 |
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386 |
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1766360905872834560 |