Mating success and body condition not related to foraging specializations in male fur seals
Identifieur interne : 000633 ( Pmc/Curation ); précédent : 000632; suivant : 000634Mating success and body condition not related to foraging specializations in male fur seals
Auteurs : L. Kernaléguen [Australie, France] ; Y. Cherel [France] ; C. Guinet [France] ; J. P. Y. Arnould [Australie]Source :
- Royal Society Open Science [ 2054-5703 ] ; 2016.
Abstract
Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (
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DOI: 10.1098/rsos.160143
PubMed: 27493771
PubMed Central: 4968463
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Kernaléguen</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Geelong, School of Life and Environmental Sciences</addr-line>,<institution>Deakin University</institution>,<addr-line>Burwood, Victoria</addr-line>,<country>Australia</country></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Cherel, Y" sort="Cherel, Y" uniqKey="Cherel Y" first="Y." last="Cherel">Y. Cherel</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Guinet, C" sort="Guinet, C" uniqKey="Guinet C" first="C." last="Guinet">C. Guinet</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Arnould, J P Y" sort="Arnould, J P Y" uniqKey="Arnould J" first="J. 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Kernaléguen</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Geelong, School of Life and Environmental Sciences</addr-line>,<institution>Deakin University</institution>,<addr-line>Burwood, Victoria</addr-line>,<country>Australia</country></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Cherel, Y" sort="Cherel, Y" uniqKey="Cherel Y" first="Y." last="Cherel">Y. Cherel</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Guinet, C" sort="Guinet, C" uniqKey="Guinet C" first="C." last="Guinet">C. Guinet</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Arnould, J P Y" sort="Arnould, J P Y" uniqKey="Arnould J" first="J. P. Y." last="Arnould">J. P. Y. Arnould</name><affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Geelong, School of Life and Environmental Sciences</addr-line>,<institution>Deakin University</institution>,<addr-line>Burwood, Victoria</addr-line>,<country>Australia</country></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Royal Society Open Science</title><idno type="eISSN">2054-5703</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (<italic>Arctocephalus gazella</italic>) and Australian (<italic>A. pusillus doriferus</italic>) fur seals. Strong selective pressure is expected in these highly dimorphic and polygynous species, raising the question of the fitness payoffs associated with different foraging strategies. We investigated the relationship between individual isotopic niche (a proxy of foraging specialization), body size and condition, and an index of reproductive success (harem size) in territorial males. Individuals varied greatly in their skin and fur isotopic values reflecting a range of foraging strategies within the two populations. However, in both species, isotopic niche was not correlated to body size, condition or mating success (<italic>R</italic><sup>2</sup>/<italic>ρ</italic> < 0.06). Furthermore, no foraging niche was predominant in either species, which would have indicated a substantial long-term fitness benefit of a particular strategy via a higher survival rate. These results suggest that the fitness consequences of a foraging strategy depend not only on the quality of prey and feeding habitat but also on an individual's hunting efficiency and skills.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Bolnick, Di" uniqKey="Bolnick D">DI Bolnick</name></author><author><name sortKey="Svanback, R" uniqKey="Svanback R">R Svanback</name></author><author><name sortKey="Fordyce, Ja" uniqKey="Fordyce J">JA Fordyce</name></author><author><name sortKey="Yang, Lh" uniqKey="Yang L">LH Yang</name></author><author><name sortKey="Davis, Jm" uniqKey="Davis J">JM Davis</name></author><author><name sortKey="Hulsey, Cd" uniqKey="Hulsey C">CD Hulsey</name></author><author><name sortKey="Forister, Ml" uniqKey="Forister M">ML Forister</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Darimont, Ct" uniqKey="Darimont C">CT Darimont</name></author><author><name sortKey="Paquet, Pc" 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<front><journal-meta><journal-id journal-id-type="nlm-ta">R Soc Open Sci</journal-id><journal-id journal-id-type="iso-abbrev">R Soc Open Sci</journal-id><journal-id journal-id-type="publisher-id">RSOS</journal-id><journal-id journal-id-type="hwp">royopensci</journal-id><journal-title-group><journal-title>Royal Society Open Science</journal-title></journal-title-group><issn pub-type="epub">2054-5703</issn><publisher><publisher-name>The Royal Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">27493771</article-id><article-id pub-id-type="pmc">4968463</article-id><article-id pub-id-type="doi">10.1098/rsos.160143</article-id><article-id pub-id-type="publisher-id">rsos160143</article-id><article-categories><subj-group subj-group-type="hwp-journal-coll"><subject>1001</subject><subject>60</subject><subject>14</subject></subj-group><subj-group subj-group-type="heading"><subject>Biology (Whole Organism)</subject></subj-group><subj-group subj-group-type="leader"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Mating success and body condition not related to foraging specializations in male fur seals</article-title><alt-title alt-title-type="short">Fitness consequences of specialisation</alt-title></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid" authenticated="false">http://orcid.org/0000-0002-1558-7604</contrib-id><name><surname>Kernaléguen</surname><given-names>L.</given-names></name><xref ref-type="aff" rid="af1">1</xref><xref ref-type="aff" rid="af2">2</xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Cherel</surname><given-names>Y.</given-names></name><xref ref-type="aff" rid="af2">2</xref></contrib><contrib contrib-type="author"><name><surname>Guinet</surname><given-names>C.</given-names></name><xref ref-type="aff" rid="af2">2</xref></contrib><contrib contrib-type="author"><name><surname>Arnould</surname><given-names>J. P. Y.</given-names></name><xref ref-type="aff" rid="af1">1</xref></contrib></contrib-group><aff id="af1"><label>1</label><addr-line>Geelong, School of Life and Environmental Sciences</addr-line>,<institution>Deakin University</institution>,<addr-line>Burwood, Victoria</addr-line>,<country>Australia</country></aff><aff id="af2"><label>2</label><addr-line>Centre d'Etudes Biologiques de Chizé</addr-line>,<institution>UMR 7372 du CNRS-Université de La Rochelle</institution>,<addr-line>BP 14, 79360 Villiers-en-Bois</addr-line>,<country>France</country></aff><author-notes><corresp id="cor1">Author for correspondence: L. Kernaléguen e-mail: <email>lkernale@deakin.edu.au</email></corresp></author-notes><pub-date pub-type="collection"><month>7</month><year>2016</year></pub-date><pub-date pub-type="epub"><day>6</day><month>7</month><year>2016</year></pub-date><pub-date pub-type="pmc-release"><day>6</day><month>7</month><year>2016</year></pub-date><pmc-comment> PMC Release delay is 0 months and 0 days and was based on the
<volume>3</volume><issue>7</issue><elocation-id>160143</elocation-id><history><date date-type="received"><day>29</day><month>2</month><year>2016</year></date><date date-type="accepted"><day>7</day><month>6</month><year>2016</year></date></history><permissions><copyright-statement>© 2016 The Authors.</copyright-statement><copyright-year>2016</copyright-year><license license-type="open-access" specific-use="vor" xlink:href="http://creativecommons.org/licenses/by/4.0/"><license-p>Published by the Royal Society under the terms of the Creative Commons Attribution License <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</ext-link>, which permits unrestricted use, provided the original author and source are credited.</license-p></license></permissions><self-uri content-type="pdf" xlink:href="rsos160143.pdf"></self-uri><abstract><p>Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (<italic>Arctocephalus gazella</italic>) and Australian (<italic>A. pusillus doriferus</italic>) fur seals. Strong selective pressure is expected in these highly dimorphic and polygynous species, raising the question of the fitness payoffs associated with different foraging strategies. We investigated the relationship between individual isotopic niche (a proxy of foraging specialization), body size and condition, and an index of reproductive success (harem size) in territorial males. Individuals varied greatly in their skin and fur isotopic values reflecting a range of foraging strategies within the two populations. However, in both species, isotopic niche was not correlated to body size, condition or mating success (<italic>R</italic><sup>2</sup>/<italic>ρ</italic> < 0.06). Furthermore, no foraging niche was predominant in either species, which would have indicated a substantial long-term fitness benefit of a particular strategy via a higher survival rate. These results suggest that the fitness consequences of a foraging strategy depend not only on the quality of prey and feeding habitat but also on an individual's hunting efficiency and skills.</p></abstract><kwd-group><kwd><italic>Arctocephalus</italic></kwd><kwd>diet</kwd><kwd>fitness payoff</kwd><kwd>reproductive success</kwd><kwd>stable isotopes</kwd><kwd>territorial males</kwd></kwd-group><funding-group specific-use="FundRef"><award-group><funding-source><named-content content-type="funder_name">Association Nationale de la Recherche</named-content></funding-source><award-id>VMC IPSOS-SEAL</award-id></award-group></funding-group><funding-group specific-use="FundRef"><award-group><funding-source><named-content content-type="funder_name">Institut Polaire Français Paul Emile Victor</named-content><named-content content-type="funder_identifier">http://dx.doi.org/10.13039/501100004796</named-content></funding-source><award-id>Program 109</award-id></award-group></funding-group><funding-group specific-use="FundRef"><award-group><funding-source><named-content content-type="funder_name">Holsworth Wildlife Research Endowment</named-content><named-content content-type="funder_identifier">http://dx.doi.org/10.13039/100008190</named-content></funding-source></award-group></funding-group><custom-meta-group><custom-meta><meta-name>cover-date</meta-name><meta-value>July, 2016</meta-value></custom-meta></custom-meta-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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