{"refrec":{"BRefID":117927,"RR":"<b>Bock, C.; Sartoris, F.J.; Wittig, R.-M.; Pörtner, H.O.</b> (2002). Temperature-dependent pH regulation in stenothermal Antarctic and eurythermal temperate eelpout (Zoarcidae): an in-vivo NMR study, <b><i>in</i></b>: Arntz, W.E. <i>et al.</i> (Ed.) <i>Ecological studies in the Antarctic sea ice zone: results of EASIZ Midterm Symposium.</i> pp. 266-271","BEntID":306997,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Arntz, W.E. <i>et al.</i> <i>Ecological studies in the Antarctic sea ice zone: results of EASIZ Midterm Symposium.</i> pp. 266-271","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bock, C.; Sartoris, F.J.; Wittig, R.-M.; Pörtner, H.O.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bock, C. <i>et al.</i>","Englishabstract":"Temperature-dependent adjustments of intracellular pH are thought to play a major role in the maintenance of protein function. Comparative studies were carried out in two species from the same fish family (Zoarcidae), the stenothermal Antarctic eelpout (<i>Pachycara brachycephalum</i>) and the eurythermal eelpout (<i>Zoarces viviparus</i>), to find out whether pH regulation is modified by temperature in the closely related species and to what extent the respective pattern differs between eurytherms and stenotherms. Previous invasive studies had compared individual animals sampled at various temperatures and suggested that a decrease in intracellular pH (pHi) values occurs at rising temperatures, as predicted by the alpha-stat hypothesis of acid-base regulation. The present study used non-invasive in vivo <sup>31</sup>P-NMR spectroscopy in non-anaesthetized, unrestrained fish for long-term online recordings in individual specimens. Control spectra obtained at T=0°C for <i>P. brachycephalum</i> and at 12°C for <i>Z. viviparus</i> indicated low stress conditions, as well as a high stability of energy and acid-base status over time periods longer than 1 week. Temperature changes had no influence on the concentration of high-energy phosphates like phosphocreatine or ATP. Temperature-induced pH changes were monitored continuously in a range between 0 and 6°C for polar, and 12 and 18°C for temperate eelpout. A pHi change of around-0.015 pH units/°C was observed within both species, in accordance with the alpha-stat hypothesis; however, extrapolation to the same temperature revealed different set points of pH regulation in the two species. These findings confirm that an alpha-stat pattern of pH regulation can be found in stenothermal Antarctic animals, at set points deviating from an alpha-stat pattern, however, in a between-species comparison.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Temperature-dependent pH regulation in stenothermal Antarctic and eurythermal temperate eelpout (Zoarcidae): an in-vivo NMR study","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2002,"MonPub":null,"DateUpdate":"2019-08-28","DateCreate":"2007-12-12","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":117927,"PubliDate":2002,"Pagination":"266-271","XtraPublOfAnaID":null,"ISBN":"3-540-43218-3","Volume":null,"Issue":null,"BRefMon":117752,"BRefMonRR":"<b>Arntz, W.E.; Clarke, A. (Ed.)</b> (2002). Ecological studies in the Antarctic sea ice zone: Results of EASIZ Midterm Symposium. Springer: Berlin. ISBN 3-540-43218-3. 277 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":null,"SerRR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"StandardTitleMon":"Ecological studies in the Antarctic sea ice zone: Results of EASIZ Midterm Symposium","StartPage":266,"Pages":6,"ToPubliDate":null,"BRefBibLvlCode":"M","SerNotes":null,"AutString":"Arntz, W.E.; Clarke, A. (Ed.)"},"monrec":null,"serrec":null,"relations":[{"YBRefID":117875,"RefStrFull":"<b>Bock, C.; Sartoris, F.J.; Wittig, R.-M.; Pörtner, H.O.</b> (2001). Temperature-dependent pH regulation in stenothermal Antarctic and eurythermal temperate eelpout (Zoarcidae): an in-vivo NMR study. <i>Polar Biol. 24(11)</i>: 869-874. <a href=\"http://dx.doi.org/10.1007/s003000100298\" target=\"_blank\">dx.doi.org/10.1007/s003000100298</a>","RelID":4,"Relation":"Related to","StandardTitle":"Temperature-dependent pH regulation in stenothermal Antarctic and eurythermal temperate eelpout (Zoarcidae): an in-vivo NMR study"}],"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Bock","Firstname":null,"Initials":"C.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":306997,"AutID":77726,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Sartoris","Firstname":null,"Initials":"F.J.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":306997,"AutID":34760,"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":"Wittig","Firstname":null,"Initials":"R.-M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":306997,"AutID":77727,"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":"Pörtner","Firstname":"Hans Otto","Initials":"H.O.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":306997,"AutID":28015,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":null,"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":[{"PublName":"Springer","Place":"Berlin"}],"pictures":[],"thestermsPath":[{"ThesaurusTerm":"Physiology","ThestID":6198,"Acronym":"ASFA","ThesTermPath":"Biology > Physiology"},{"ThesaurusTerm":"Proteins","ThestID":6602,"Acronym":"ASFA","ThesTermPath":"Chemical compounds > Organic compounds > Proteins"},{"ThesaurusTerm":"P effects","ThestID":6112,"Acronym":"ASFA","ThesTermPath":"Environmental effects > P effects"},{"ThesaurusTerm":"Temperature effects","ThestID":8417,"Acronym":"ASFA","ThesTermPath":"Environmental effects > Temperature effects"}],"thestermsASFA":[{"ThesaurusTerm":"P effects"},{"ThesaurusTerm":"Physiology"},{"ThesaurusTerm":"Proteins"},{"ThesaurusTerm":"Temperature effects"}],"taxtermsASFA":[{"TaxTerm":"Pachycara brachycephalum"},{"TaxTerm":"Zoarces viviparus"}],"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":[{"AutName":"Arntz","Initials":"W.E.","CorporateFlag":0,"BEntID":112053,"AutID":693,"OrderNr":1,"DegrID":null,"EditorFlag":1,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"AutStrTrunc":"Arntz, W.E.; Clarke, A. 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