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Conserved fatty acid profiles and lipid metabolic pathways in a tropical reef fish exposed to ocean warming – An adaptation mechanism of tolerant species?

2021Journal article Restricted access
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dc.contributor.authorMadeira, Carolina
dc.contributor.authorMadeira, Diana
dc.contributor.authorLadd, Nemiah
dc.contributor.authorSchubert, Carsten J.
dc.contributor.authorDiniz, Mário S.
dc.contributor.authorVinagre, Catarina
dc.contributor.authorLeal, Miguel C.
dc.date.accessioned2021-06-29T10:41:48Z
dc.date.available2021-06-29T10:41:48Z
dc.date.issued2021
dc.description.abstractClimate warming is causing rapid spatial expansion of ocean warm pools from equatorial latitudes towards the subtropics. Sedentary coral reef inhabitants in affected areas will thus be trapped in high temperature regimes, which may become the "new normal". In this study, we used clownfish Amphiprion ocellaris as model organism to study reef fish mechanisms of thermal adaptation and determine how high temperature affects multiple lipid aspects that influence physiology and thermal tolerance. We exposed juvenile fish to two different experimental conditions, implemented over 28 days: average tropical water temperatures (26 °C, control) or average warm pool temperatures (30 °C). We then performed several analyses on fish muscle and liver tissues: i) total lipid content (%), ii) lipid peroxides, iii) fatty acid profiles, iv) lipid metabolic pathways, and v) weight as body condition metric. Results showed that lipid storage capacity in A. ocellaris was not affected by elevated temperature, even in the presence of lipid peroxides in both tissues assessed. Additionally, fatty acid profiles were unresponsive to elevated temperature, and lipid metabolic networks were consequently well conserved. Consistent with these results, we did not observe changes in fish weight at elevated temperature. There were, however, differences in fatty acid profiles between tissue types and over time. Liver showed enhanced α-linolenic and linoleic acid metabolism, which is an important pathway in stress response signaling and modulation on environmental changes. Temporal oscillations in fatty acid profiles are most likely related to intrinsic factors such as growth, which leads to the mobilization of energetic reserves between different tissues throughout time according to organism needs. Based on these results, we propose that the stability of fatty acid profiles and lipid metabolic pathways may be an important thermal adaptation feature of fish exposed to warming environments.pt_PT
dc.description.sponsorshipFCT: PTDC/MAR-EST/2141/2012, UIDB/04292/2020/ UIDB/04326/2020granted to CCMAR and UIDB/04378/2020/ CESAM(UIDP/50017/2020+UIDB/50017/2020) by FCT/MEC co-funding by FEDER, PT2020 PartnershipAgreement and Compete 2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2021.146738pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/16675
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectAnimalspt_PT
dc.subjectCoral Reefspt_PT
dc.subjectLipidspt_PT
dc.subjectMetabolic networks and pathwayspt_PT
dc.subjectOceans and seaspt_PT
dc.subjectTemperaturept_PT
dc.subjectAnthozoapt_PT
dc.subjectFatty acidspt_PT
dc.titleConserved fatty acid profiles and lipid metabolic pathways in a tropical reef fish exposed to ocean warming – An adaptation mechanism of tolerant species?pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR-EST%2F2141%2F2012/PT
oaire.citation.startPage146738pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume782pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameVinagre
person.givenNameCatarina
person.identifier.ciencia-id3F13-843A-791B
person.identifier.orcid0000-0003-2146-7948
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication86d00d4d-9343-4f98-ad81-7e0fa8906701
relation.isAuthorOfPublication.latestForDiscovery86d00d4d-9343-4f98-ad81-7e0fa8906701
relation.isProjectOfPublication30bb1a1e-06f6-437e-ba69-81d75736e243
relation.isProjectOfPublication.latestForDiscovery30bb1a1e-06f6-437e-ba69-81d75736e243

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