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Population-specific phenotypic plasticity of endangered bivalves in response to extreme events

2026Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.fosEngenharia e Tecnologia::Engenharia do Ambiente
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorGomes-dos-Santos, André
dc.contributor.authorLopes-Lima, Manuel
dc.contributor.authorSilva, Beatriz
dc.contributor.authorMachado, André M.
dc.contributor.authorPinto, Rui
dc.contributor.authorÖsterling, Martin
dc.contributor.authorWallerius, Magnus Lovén
dc.contributor.authorUrbańska, Maria
dc.contributor.authorGolski, Janusz
dc.contributor.authorRunowski, Sławomir
dc.contributor.authorKaźmierczak, Sandra
dc.contributor.authorTeixeira, Amilcar
dc.contributor.authorSousa, Ronaldo
dc.contributor.authorCastro, L. Filipe C.
dc.contributor.authorCastro, Paulo
dc.contributor.authorCarvalho, Francisco
dc.contributor.authorFonseca, Elza
dc.contributor.authorFroufe, Elsa
dc.date.accessioned2026-02-24T15:28:34Z
dc.date.available2026-02-24T15:28:34Z
dc.date.issued2026
dc.description.abstractFreshwater mussels are among the most endangered animal groups, highly sensitive to climate change due to their strict dependence on freshwater habitats. While freshwater mussels are often considered ecologically strict, their distribution across broad environmental gradients raises the possibility of population-specific adaptations mediated by phenotypic plasticity. This study investigates whether geographically and climatically distinct populations of two freshwater mussel species (Unio pictorum and Unio delphinus) exhibit different transcriptomic responses to prolonged heat stress and whether these responses reveal signs of local adaptation. We exposed northern and southern populations of both species to gradually increasing temperatures in controlled laboratory conditions, simulating a prolonged thermal extreme event, and RNA-seq was used to quantify differential gene expression. Results showed strong differences between northern and southern populations of the two species, both in the magnitude and functional composition of transcriptomic responses. Southern populations exhibited intense expression shifts involving classical stress pathways, heat shock proteins, detoxification (cytochrome P450s), apoptosis, and energy metabolism, while northern populations, particularly U. delphinus, showed a markedly subdued response. Notably, U. pictorum's northern population relied heavily on the cytochrome P450 family even at moderate temperatures, while the southern populations of both species activated broader proteostasis and immune responses at higher stress thresholds. These findings demonstrate clear population-specific phenotypic plasticity, shaped by environmental conditions rather than phylogenetic proximity. They underscore the need for conservation strategies to move beyond species-level management, embracing intraspecific variation as a buffer against climate impacts. As climate change accelerates, safeguarding the evolutionary potential encoded within populations, not just species, is essential to preserving biodiversity resilience.eng
dc.description.sponsorshipThis research was developed under the project EdgeOmics - Freshwater Bivalves at the Edge: Adaptation genomics under climate-change scenarios (PTDC/CTA-AMB/3065/2020) funded by Fundação para a Ciência e a Tecnologia (FCT) through national funds. Fundação para a Ciência e a Tecnologia (FCT) also supported AGS (2023.07625.CEECIND/CP2848/CT0010 and DOI identifier https://doi.org/10.54499/2023.07625.CEECIND/CP2848/CT0010), EF (CEECINST/00027/2021/CP2789/CT0003 and DOI identifier https://doi.org/10.54499/CEECINST/00027/2021/CP2789/CT0003. FCT also provided funds within the scope of the Strategic Funding UIDB/04423/2020 (https://doi.org/10.54499/UIDB/04423/2020), UIDP/04423/2020 (https://doi.org/10.54499/UIDP/04423/2020), and LA/P/0101/2020 (https://doi.org/10.54499/LA/P/0101/2020).
dc.identifier.citationGomes-dos-Santos, André; Lopes-Lima, Manuel; Silva, Beatriz; Machado, Andre M.; Pinto, Rui; Osterling, Martin; Wallerius, Magnus L.; Urbanska, Maria; Golski, Janusz; Runowski, Slawomir; Kazmierczak, Sandra; Teixeira, Amilcar; Sousa, Ronaldo; Castro, L. Filipe C.; Castro Paulo; Carvalho, Francisco; Fonseca, Elza; Froufe, Elsa (2026). Population-specific phenotypic plasticity of endangered bivalves in response to extreme events. Comparative Biochemistry and Physiology Part D: Genomics and Proteomics. ISSN 1744-117X. 58, p. 1-11.
dc.identifier.doi10.1016/j.cbd.2026.101778
dc.identifier.issn1744-117X
dc.identifier.urihttp://hdl.handle.net/10198/35844
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationFreshwater Bivalves at the edge: Adaptation genomics under climate-change scenarios
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofComparative Biochemistry and Physiology Part D: Genomics and Proteomics
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectPhenotypic plasticity
dc.subjectDifferential gene expression (DGE)
dc.subjectClimate change
dc.subjectHeat stress
dc.subjectUnionida
dc.titlePopulation-specific phenotypic plasticity of endangered bivalves in response to extreme eventseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleFreshwater Bivalves at the edge: Adaptation genomics under climate-change scenarios
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020/PTDC%2FCTA-AMB%2F3065%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.endPage11
oaire.citation.startPage1
oaire.citation.titleComparative Biochemistry and Physiology Part D: Genomics and Proteomics
oaire.citation.volume58
oaire.fundingStreamConcurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameTeixeira
person.givenNameAmilcar
person.identifier2153193
person.identifier.ciencia-id9510-3CF3-0393
person.identifier.orcid0000-0001-5336-1174
person.identifier.scopus-author-id7202385393
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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