Lipid remodelling in the reef-building honeycomb worm, Sabellaria alveolata, reflects acclimation and local adaptation to temperature

Hdl Handle:
http://hdl.handle.net/10034/620227
Title:
Lipid remodelling in the reef-building honeycomb worm, Sabellaria alveolata, reflects acclimation and local adaptation to temperature
Authors:
Muir, Anna P. ( 0000-0002-6896-6915 ) ; Nunes, Flavia L. D.; Dubois, Stanislas F.; Pernet, Fabrice
Abstract:
Acclimation and adaptation, which are key to species survival in a changing climate, can be observed in terms of membrane lipid composition. Remodelling membrane lipids, via homeoviscous adaptation (HVA), counteracts membrane dysfunction due to temperature in poikilotherms. In order to assess the potential for acclimation and adaptation in the honeycomb worm, Sabellaria alveolata, a reefbuilding polychaete that supports high biodiversity, we carried out common-garden experiments using individuals from along its latitudinal range. Individuals were exposed to a stepwise temperature increase from 15 °C to 25 °C and membrane lipid composition assessed. Our results suggest that S. alveolata was able to acclimate to higher temperatures, as observed by a decrease in unsaturation index and 20:5n-3. However, over the long-term at 25 °C, lipid composition patterns are not consistent with HVA expectations and suggest a stress response. Furthermore, unsaturation index of individuals from the two coldest sites were higher than those from the two warmest sites, with individuals from the thermally intermediate site being in-between, likely reflecting local adaptation to temperature. Therefore, lipid remodelling appears limited at the highest temperatures in S. alveolata, suggesting that individuals inhabiting warm environments may be close to their upper thermal tolerance limits and at risk in a changing climate.
Affiliation:
University of Chester; Ifremer Centre Bretagne; Ifremer Centre Bretagne; Ifremer Centre Bretagne
Citation:
Muir, A. P., Nunes, F. L. D., Dubois, S. F., & Pernet, F. (2016). Lipid remodelling in the reef-building honeycomb worm, Sabellaria alveolata, reflects acclimation and local adaptation to temperature. Scientific Reports, 6, 35669. doi: 10.1038/srep35669
Publisher:
Nature Publishing Group
Journal:
Scientific Reports
Publication Date:
2016
URI:
http://hdl.handle.net/10034/620227
DOI:
10.1038/srep35669
Additional Links:
http://www.nature.com/articles/srep35669
Type:
Article
Language:
en
EISSN:
2045-2322
Appears in Collections:
Biological Sciences

Full metadata record

DC FieldValue Language
dc.contributor.authorMuir, Anna P.en
dc.contributor.authorNunes, Flavia L. D.en
dc.contributor.authorDubois, Stanislas F.en
dc.contributor.authorPernet, Fabriceen
dc.date.accessioned2016-10-27T08:39:29Z-
dc.date.available2016-10-27T08:39:29Z-
dc.date.issued2016-
dc.identifier.citationMuir, A. P., Nunes, F. L. D., Dubois, S. F., & Pernet, F. (2016). Lipid remodelling in the reef-building honeycomb worm, Sabellaria alveolata, reflects acclimation and local adaptation to temperature. Scientific Reports, 6, 35669. doi: 10.1038/srep35669en
dc.identifier.doi10.1038/srep35669-
dc.identifier.urihttp://hdl.handle.net/10034/620227-
dc.description.abstractAcclimation and adaptation, which are key to species survival in a changing climate, can be observed in terms of membrane lipid composition. Remodelling membrane lipids, via homeoviscous adaptation (HVA), counteracts membrane dysfunction due to temperature in poikilotherms. In order to assess the potential for acclimation and adaptation in the honeycomb worm, Sabellaria alveolata, a reefbuilding polychaete that supports high biodiversity, we carried out common-garden experiments using individuals from along its latitudinal range. Individuals were exposed to a stepwise temperature increase from 15 °C to 25 °C and membrane lipid composition assessed. Our results suggest that S. alveolata was able to acclimate to higher temperatures, as observed by a decrease in unsaturation index and 20:5n-3. However, over the long-term at 25 °C, lipid composition patterns are not consistent with HVA expectations and suggest a stress response. Furthermore, unsaturation index of individuals from the two coldest sites were higher than those from the two warmest sites, with individuals from the thermally intermediate site being in-between, likely reflecting local adaptation to temperature. Therefore, lipid remodelling appears limited at the highest temperatures in S. alveolata, suggesting that individuals inhabiting warm environments may be close to their upper thermal tolerance limits and at risk in a changing climate.en
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.urlhttp://www.nature.com/articles/srep35669en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectclimate changeen
dc.subjecthomeoviscous adaptationen
dc.subjectAdaptationen
dc.subjectacclimatisationen
dc.titleLipid remodelling in the reef-building honeycomb worm, Sabellaria alveolata, reflects acclimation and local adaptation to temperatureen
dc.typeArticleen
dc.identifier.eissn2045-2322-
dc.contributor.departmentUniversity of Chester; Ifremer Centre Bretagne; Ifremer Centre Bretagne; Ifremer Centre Bretagneen
dc.identifier.journalScientific Reportsen
dc.date.accepted2016-09-28-
or.grant.openaccessYesen
rioxxterms.funderThis work was supported by a grant from the Regional Council of Brittany, from the European Funds (ERDF) and supported by the “Laboratoire d’Excellence” LabexMER (ANR-10-LABX-19) and co-funded by a grant from the French government under the program “Investissements d’Avenir”.en
rioxxterms.identifier.projectThis work was supported by a grant from the Regional Council of Brittany, from the European Funds (ERDF) and supported by the “Laboratoire d’Excellence” LabexMER (ANR-10-LABX-19) and co-funded by a grant from the French government under the program “Investissements d’Avenir”.en
rioxxterms.versionAMen
rioxxterms.licenseref.startdate2016-10-20-
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