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Integrated behavioural and physiological responses of sand smelt larvae to the effects of warming and hypoxia as combined stressors

2024Journal article Open access
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dc.contributor.authorLima, André R.A.
dc.contributor.authorLopes, Ana Rita
dc.contributor.authorMartins-Cardoso, Sara
dc.contributor.authorMoutinho, Ariana B.
dc.contributor.authorLemos, Marco F.L.
dc.contributor.authorNovais, Sara C
dc.contributor.authorFaria, Ana M.
dc.date.accessioned2024-07-01T14:05:11Z
dc.date.available2024-07-01T14:05:11Z
dc.date.issued2024
dc.description.abstractForecasts indicate that rising temperatures towards the future and the expansion of dead zones will change environmental suitability for fish early stages. Therefore, we assessed the chronic effects of warming (26 ◦C), hypoxia (<2–2.5 mg L− 1 ) or their combination on mortality rate, growth, behaviour, energy metabolism and oxidative stress using Atherina presbyter larvae as a model species. There were no differences between the treatments in terms of mortality rate. The combination of warming and hypoxia induced faster loss of body mass (+22.7%). Warming, hypoxia or their combination enhanced boldness (+14.7–25.4%), but decreased exploration (− 95%–121%), increased the time in frozen state (+60.6–80.5%) and depleted swimming speed (− 45.6–50.5%). Moreover, routine metabolic rate was depleted under hypoxia or under the combination of warming and hypoxia (− 56.6 and 57.2%, respectively). Under hypoxia, increased catalase activity (+56.3%) indicates some level of antioxidant defence capacity, although increased DNA damage (+25.2%) has also been observed. Larvae also exhibited a great capacity to maintain the anaerobic metabolism stable in all situations, but the aerobic metabolism is enhanced (+19.3%) when exposed to the combination of both stressors. The integrative approach showed that changes in most target responses can be explained physiologically by oxidative stress responses. Increased oxidative damages (lipid peroxidation and DNA damage) and increased interaction between antioxidant enzymes (superoxide dismutase and catalase) are associated to increased time in frozen state and decreased swimming activity, growth rates and boldness. Under all stressful situations, larvae reduced energy-consuming behaviours (e.g. depleted exploration and swimming activity) likely to stabilize or compensate for the aerobic and anaerobic metabolisms. Despite being an active small pelagic fish, we concluded that the sensitive larval phase exhibited complex coping strategies to physiologically acclimate under thermal and hypoxic stress via behavioural responses.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLima, A. R. A., Lopes, A. R., Martins-Cardoso, S., Moutinho, A. B., Lemos, M. F. L., Novais, S. C., & Faria, A. M. (2024). Integrated behavioural and physiological responses of sand smelt larvae to the effects of warming and hypoxia as combined stressors. Marine Environmental Research, 199. https://doi.org/10.1016/j.marenvres.2024.106609pt_PT
dc.identifier.doi10.1016/j.marenvres.2024.106609pt_PT
dc.identifier.issn18790291
dc.identifier.urihttp://hdl.handle.net/10400.12/9823
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier B.V.pt_PT
dc.relationUIDB/04292/2020pt_PT
dc.relationLA/P/0069/2020pt_PT
dc.relationSFRH/BD/147688/2019pt_PT
dc.relationCEECIND/00067/2018pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectClimate changept_PT
dc.subjectOcean warmingpt_PT
dc.subjectOxygen depletionpt_PT
dc.subjectFish metabolismpt_PT
dc.subjectGrowth patternspt_PT
dc.subjectOxidative stresspt_PT
dc.subjectEarly life stagespt_PT
dc.subjectSmall pelagic fishpt_PT
dc.titleIntegrated behavioural and physiological responses of sand smelt larvae to the effects of warming and hypoxia as combined stressorspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNetherlandspt_PT
oaire.citation.startPage106609pt_PT
oaire.citation.titleMarine Environmental Researchpt_PT
oaire.citation.volume199pt_PT
person.familyNameAraújo Lima
person.familyNameLopes
person.familyNameBorges Moutinho
person.familyNameNovais
person.familyNameFaria
person.givenNameAndré Ricardo
person.givenNameAna Rita
person.givenNameAriana
person.givenNameSara
person.givenNameAna M.
person.identifier283148
person.identifierH-3227-2014
person.identifier1716744
person.identifier170504
person.identifier556301
person.identifier.ciencia-idDD16-FC8C-D1D0
person.identifier.ciencia-id611A-674E-B9CD
person.identifier.ciencia-id5614-AA82-24F3
person.identifier.ciencia-id2216-A2E0-A118
person.identifier.ciencia-id4818-8949-6BFC
person.identifier.orcid0000-0002-9698-8302
person.identifier.orcid0000-0002-3992-0715
person.identifier.orcid0000-0002-5684-6449
person.identifier.orcid0000-0003-1306-3396
person.identifier.orcid0000-0001-7969-3177
person.identifier.ridC-4931-2019
person.identifier.ridA-9032-2012
person.identifier.scopus-author-id55895278700
person.identifier.scopus-author-id57226059189
person.identifier.scopus-author-id23025463300
person.identifier.scopus-author-id10242168600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication320235b1-4a95-4412-bdd5-c2f544e192c4
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relation.isAuthorOfPublication.latestForDiscovery403613f3-2b33-4718-acb6-b85e7285fc79

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