{"refrec":{"BRefID":437559,"RR":"<b>Servetto, N.; De Troch, M.; Alurralde, G.; Ferrero, L.; de Aranzamendi, M.C.; Sahade, R.</b> (2025). Effects of ocean acidification on fatty acid composition in the Antarctic snail <i>Neobuccinum eatoni</i>. <i>Front. Mar. Sci. 12</i>: 1645755. <a href=\"https://dx.doi.org/10.3389/fmars.2025.1645755\" target=\"_blank\">https://dx.doi.org/10.3389/fmars.2025.1645755</a>","BEntID":435390,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Front. Mar. Sci. 12</i>: 1645755. <a href=\"https://dx.doi.org/10.3389/fmars.2025.1645755\" target=\"_blank\">https://dx.doi.org/10.3389/fmars.2025.1645755</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Servetto, N.; De Troch, M.; Alurralde, G.; Ferrero, L.; de Aranzamendi, M.C.; Sahade, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Servetto, N. <i>et al.</i>","Englishabstract":"<strong>Introduction:</strong> Ocean acidification (OA), resulting from the absorption of increasing atmospheric CO<sub>2</sub> by the oceans, represents a major threat to marine organisms. Despite growing concern, the biochemical responses of Antarctic species to OA remain poorly understood. <strong>Methods:</strong> This study investigated the impact of OA (pH 7.70 ± 0.09) on the fatty acid (FA) composition of the Antarctic snail <i>Neobuccinum eatoni</i> over a two-month experimental period (December 2015–March 2016). Fatty acid profiles were analyzed in multiple tissues to assess potential alterations induced by low-pH (LpH) conditions. <strong>Results:</strong> Significant tissue-specific changes in FA composition were detected, particularly in the mantle and gill. Under LpH exposure, notable modifications occurred in long-chain polyunsaturated fatty acids (LC-PUFAs) such as 22:5n-3, 22:6n-3, and 24:5n-6. Elevated LC-PUFA levels in the mantle suggested a compensatory response to oxidative stress, while shifts in the n-3/n-6 ratios in the gill pointed to potential alterations in immune and anti-inflammatory functions. <strong>Discussion:</strong> Indicators of homeoviscous adaptation (HVA), including PUFA/SFA ratios and mean chain length (MCL), revealed biochemical strategies used by N. eatoni to maintain membrane fluidity under acidified conditions. This study provides the first evidence of FA-based responses to elevated <i>p</i>CO<sub>₂</sub> in an Antarctic gastropod, highlighting the potential of fatty acids as sensitive biomarkers of physiological adaptation to environmental stressors.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effects of ocean acidification on fatty acid composition in the Antarctic snail <i>Neobuccinum eatoni</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:32:52.086823","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Southern Ocean, gastropod, CO<sub>2</sub> anthropogenic emissions, lipid biochemistry","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2026-02-10","DateCreate":"2026-02-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001614199500001","VABBcode":null,"OpenAcc":1,"DOI":"10.3389/fmars.2025.1645755"},"refs":null,"anarec":{"AnaID":437559,"PubliDate":2025,"Pagination":"1645755","XtraPublOfAnaID":null,"ISBN":null,"Volume":"12","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":233602,"SerRR":"Frontiers in Marine Science. 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