Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon
Identifieur interne : 001444 ( Istex/Corpus ); précédent : 001443; suivant : 001445Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon
Auteurs : Cyril Piou ; Etienne PrévostSource :
- Global Change Biology [ 1354-1013 ] ; 2013-03.
Abstract
Facing climate change (CC), species are prone to multiple modifications in their environment that can lead to extinction, migration or adaptation. Identifying the role and interplay of different potential stressors becomes a key question. Anadromous fishes will be exposed to both river and oceanic habitat changes. For Atlantic salmon, the river water temperature, river flow and oceanic growth conditions appear as three main stressing factors. They could act on population dynamics or as selective forces on life‐history pathways. Using an individual‐based demo‐genetic model, we assessed the effects of these factors (1) to compare risks of extinction resulting from CC in river and ocean, and (2) to assess CC effects on life‐history pathways including the evolution of underlying genetic control of phenotypic plasticity. We focused on Atlantic salmon populations from Southern Europe for a time horizon of three decades. We showed that CC in river alone should not lead to extinction of Southern European salmon populations. In contrast, the reduced oceanic growth appeared as a significant threat for population persistence. An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. We concluded that to counteract oceanic effects, river flow management represented the sole potential force to reduce the extinction probability of Atlantic salmon populations in Southern Europe, although this might not impede changes in migration life history.
Url:
DOI: 10.1111/gcb.12085
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ISTEX:7565930E834DB35B923896F9C3CF1FC65EA23769Le document en format XML
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Identifying the role and interplay of different potential stressors becomes a key question. Anadromous fishes will be exposed to both river and oceanic habitat changes. For Atlantic salmon, the river water temperature, river flow and oceanic growth conditions appear as three main stressing factors. They could act on population dynamics or as selective forces on life‐history pathways. Using an individual‐based demo‐genetic model, we assessed the effects of these factors (1) to compare risks of extinction resulting from CC in river and ocean, and (2) to assess CC effects on life‐history pathways including the evolution of underlying genetic control of phenotypic plasticity. We focused on Atlantic salmon populations from Southern Europe for a time horizon of three decades. We showed that CC in river alone should not lead to extinction of Southern European salmon populations. In contrast, the reduced oceanic growth appeared as a significant threat for population persistence. An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. We concluded that to counteract oceanic effects, river flow management represented the sole potential force to reduce the extinction probability of Atlantic salmon populations in Southern Europe, although this might not impede changes in migration life history.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Cyril Piou</name><affiliations><json:string>UMR 1224 ECOBIOP, INRA, Aquapôle, Quartier Ibarron, 64310, Saint‐Pée sur Nivelle, France</json:string><json:string>UFR Sciences et Techniques Côte Basque, Pau and Pays Adour University, Campus Montaury, 64600, Anglet, France</json:string><json:string>UPR Bioagresseurs analyse et maîtrise du risque, CIRAD, F‐34398, Montpellier, France</json:string><json:string>E-mail: cyril.piou@cirad.fr</json:string></affiliations></json:item><json:item><name>Etienne Prévost</name><affiliations><json:string>UMR 1224 ECOBIOP, INRA, Aquapôle, Quartier Ibarron, 64310, Saint‐Pée sur Nivelle, France</json:string><json:string>UFR Sciences et Techniques Côte Basque, Pau and Pays Adour University, Campus Montaury, 64600, Anglet, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>diadromous fish</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>ecogenetic modelling</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>evolutionary demography</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>extinction risk</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>life‐history strategies</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>phenotypic plasticity</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>population dynamics</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>river flow management</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Salmo salar</value></json:item></subject><articleId><json:string>GCB12085</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Facing climate change (CC), species are prone to multiple modifications in their environment that can lead to extinction, migration or adaptation. 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An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. 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An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. 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Identifying the role and interplay of different potential stressors becomes a key question. Anadromous fishes will be exposed to both river and oceanic habitat changes. For Atlantic salmon, the river water temperature, river flow and oceanic growth conditions appear as three main stressing factors. They could act on population dynamics or as selective forces on life‐history pathways. Using an individual‐based demo‐genetic model, we assessed the effects of these factors (1) to compare risks of extinction resulting from <fc>CC</fc> in river and ocean, and (2) to assess <fc>CC</fc> effects on life‐history pathways including the evolution of underlying genetic control of phenotypic plasticity. We focused on Atlantic salmon populations from Southern Europe for a time horizon of three decades. We showed that <fc>CC</fc> in river alone should not lead to extinction of Southern European salmon populations. In contrast, the reduced oceanic growth appeared as a significant threat for population persistence. An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. We concluded that to counteract oceanic effects, river flow management represented the sole potential force to reduce the extinction probability of Atlantic salmon populations in Southern Europe, although this might not impede changes in migration life history.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon</title></titleInfo><name type="personal"><namePart type="given">Cyril</namePart><namePart type="family">Piou</namePart><affiliation>UMR 1224 ECOBIOP, INRA, Aquapôle, Quartier Ibarron, 64310, Saint‐Pée sur Nivelle, France</affiliation><affiliation>UFR Sciences et Techniques Côte Basque, Pau and Pays Adour University, Campus Montaury, 64600, Anglet, France</affiliation><affiliation>UPR Bioagresseurs analyse et maîtrise du risque, CIRAD, F‐34398, Montpellier, France</affiliation><affiliation>E-mail: cyril.piou@cirad.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Etienne</namePart><namePart type="family">Prévost</namePart><affiliation>UMR 1224 ECOBIOP, INRA, Aquapôle, Quartier Ibarron, 64310, Saint‐Pée sur Nivelle, France</affiliation><affiliation>UFR Sciences et Techniques Côte Basque, Pau and Pays Adour University, Campus Montaury, 64600, Anglet, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2013-03</dateIssued><dateCreated encoding="w3cdtf">2012-11-25</dateCreated><dateCaptured encoding="w3cdtf">2012-05-14</dateCaptured><dateValid encoding="w3cdtf">2012-10-30</dateValid><copyrightDate encoding="w3cdtf">2013</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract>Facing climate change (CC), species are prone to multiple modifications in their environment that can lead to extinction, migration or adaptation. Identifying the role and interplay of different potential stressors becomes a key question. Anadromous fishes will be exposed to both river and oceanic habitat changes. For Atlantic salmon, the river water temperature, river flow and oceanic growth conditions appear as three main stressing factors. They could act on population dynamics or as selective forces on life‐history pathways. Using an individual‐based demo‐genetic model, we assessed the effects of these factors (1) to compare risks of extinction resulting from CC in river and ocean, and (2) to assess CC effects on life‐history pathways including the evolution of underlying genetic control of phenotypic plasticity. We focused on Atlantic salmon populations from Southern Europe for a time horizon of three decades. We showed that CC in river alone should not lead to extinction of Southern European salmon populations. In contrast, the reduced oceanic growth appeared as a significant threat for population persistence. An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life‐history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. We concluded that to counteract oceanic effects, river flow management represented the sole potential force to reduce the extinction probability of Atlantic salmon populations in Southern Europe, although this might not impede changes in migration life history.</abstract><note type="funding">French Ministry of Ecology and Sustainable Development</note><note type="funding">ONEMA</note><subject><genre>keywords</genre><topic>diadromous fish</topic><topic>ecogenetic modelling</topic><topic>evolutionary demography</topic><topic>extinction risk</topic><topic>life‐history strategies</topic><topic>phenotypic plasticity</topic><topic>population dynamics</topic><topic>river flow management</topic><topic>Salmo salar</topic></subject><relatedItem type="host"><titleInfo><title>Global Change Biology</title></titleInfo><titleInfo type="abbreviated"><title>Glob Change Biol</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Primary Research Article</topic></subject><identifier type="ISSN">1354-1013</identifier><identifier type="eISSN">1365-2486</identifier><identifier type="DOI">10.1111/(ISSN)1365-2486</identifier><identifier type="PublisherID">GCB</identifier><part><date>2013</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>711</start><end>723</end><total>13</total></extent></part></relatedItem><identifier type="istex">7565930E834DB35B923896F9C3CF1FC65EA23769</identifier><identifier type="DOI">10.1111/gcb.12085</identifier><identifier type="ArticleID">GCB12085</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 Blackwell Publishing Ltd© 2012 Blackwell Publishing Ltd</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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