{"refrec":{"BRefID":437800,"RR":"<b>Grandjean, J.; González-Aravena, M.; Gallardo, P.; Dubois, P.; Catarino, A.I.</b> (2026). Short-term tolerance to ocean acidification of the sub-Antarctic sea-urchin <i>Arbacia dufresnii</i>. <i>Polar Biol. 49(1)</i>: 3. <a href=\"https://dx.doi.org/10.1007/s00300-025-03437-y\" target=\"_blank\">https://dx.doi.org/10.1007/s00300-025-03437-y</a>","BEntID":435631,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Polar Biol. 49(1)</i>: 3. <a href=\"https://dx.doi.org/10.1007/s00300-025-03437-y\" target=\"_blank\">https://dx.doi.org/10.1007/s00300-025-03437-y</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Grandjean, J.; González-Aravena, M.; Gallardo, P.; Dubois, P.; Catarino, A.I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Grandjean, J. <i>et al.</i>","Englishabstract":"The accumulation of anthropogenic CO<sub>2</sub> in the ocean is impacting the carbonate system chemistry in seawater, particularly in polar regions. Acidified seawater can impair the echinoderms internal regulation of pH due to an increase in hydrogen ions concentration, potentially affecting growth, and calcification, among other physiological activities. The goal of this work was to assess the effects of Ocean Acidification (OA) on <i>Arbacia dufresnii,</i> a sub-Antarctic sea urchin species. Adult specimens were exposed to three pH treatments: 7.4, 7.7, and 8.0 (control), for 21 up to 23&nbsp;days<i>.</i> We assessed spine regeneration, a proxy of calcification, by cutting spines at the base of the shaft and evaluating the magnesium content, height, and weight of the regenerated part. The coelomic fluid was sampled for pH assessment and magnesium and calcium content analysis. The RNA/DNA ratio, a proxy of metabolic activity, was assessed in the gonads and body walls. The spine regenerated weight was significantly correlated to regenerated height but not to treatments. The coelomic fluid pH (6.77 ± 0.34) did not differ between treatments (p<sub>ANOVA</sub> = 0.15). No significant differences were observed between treatments regarding RNA/DNA ratio in both body wall (p<sub>ANOVA</sub> = 0.65) and gonads (p<sub>Kruskal-Wallis</sub> = 0.34), the spine regenerated height (p<sub>ANOVA</sub> = 0.35) and Mg regenerate content (p<sub>ANOVA</sub> = 0.58). Our results suggest that <i>A. dufresnii</i> owns physiological mechanisms to cope with OA conditions during short-term exposure.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Short-term tolerance to ocean acidification of the sub-Antarctic sea-urchin <i>Arbacia dufresnii</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-30 01:32:20.515815","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Acid; Base balance; Ocean acidification; Sea-Urchin; Sub-Antarctic","OtherDescriptors":null,"Notes":null,"AnaPub":2026,"MonPub":null,"DateUpdate":"2026-02-23","DateCreate":"2026-02-23","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001664472500001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s00300-025-03437-y"},"refs":null,"anarec":{"AnaID":437800,"PubliDate":2026,"Pagination":"3","XtraPublOfAnaID":null,"ISBN":null,"Volume":"49","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43637,"SerRR":"Polar Biology. 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ISSN 0722-4060; e-ISSN 1432-2056","StandardTitleSer":"Polar Biology","ISSN":"0722-4060","AbbrevSer":"Polar Biol.","StandardTitleMon":null,"StartPage":3,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Grandjean","Firstname":"Juliette","Initials":"J.","Affiliation":"Flanders Marine Institute (VLIZ)","Discriminator":null,"CorporateFlag":0,"BEntID":435631,"AutID":590614,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"VLIZ","InsFSN":"Vlaams Instituut voor de Zee","ORCID":"0009-0008-4316-8221","PersID":44970,"InsID":36},{"AutName":"González-Aravena","Firstname":"Marcelo","Initials":"M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":435631,"AutID":520871,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Gallardo","Firstname":"Pablo","Initials":"P.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":435631,"AutID":500566,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Dubois","Firstname":"Philippe","Initials":"P.","Affiliation":"Laboratoire de Biologie Marine, Université Libre de Bruxelles","Discriminator":null,"CorporateFlag":0,"BEntID":435631,"AutID":175584,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"BIOMAR","InsFSN":"Université Libre de Bruxelles; Centre Interuniversitaire de Biologie Marine (ULB - UMH); Biologie Marine - UMH","ORCID":"0000-0003-1534-1564","PersID":203,"InsID":1600},{"AutName":"Catarino","Firstname":"Ana Isabel","Initials":"A.I.","Affiliation":"Flanders Marine Institute (VLIZ","Discriminator":null,"CorporateFlag":0,"BEntID":435631,"AutID":403887,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"VLIZ","InsFSN":"Vlaams Instituut voor de Zee","ORCID":"0000-0002-8796-0869","PersID":38251,"InsID":36}],"mapdetails":null,"datasets":[{"DasID":8757,"Acronym":null,"Citation":"Grandjean, J.; Gonzalez, M.; Gallardo, P.; Dubois, P.; Catarino Ana, I.; Flanders Marine Institute; Université Libre de Bruxelles (ULB); Instituto Antártico Chileno; Universidad de Magallanes; (2025): Experimental work for the assessment of ocean acidification effects on the sea-urchin Arbacia dufresnii. 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