{"refrec":{"BRefID":120533,"RR":"<b>Guelinckx, J.; Maes, J.; Van Den Driessche, P.; Geysen, B.; Dehairs, F.A.; Ollevier, F.P.</b> (2008). Changes in d<sup>13</sup>C and d<sup>15</sup>N in different tissues of juvenile sand goby <i>Pomatoschistus minutus</i>: a laboratory diet-switch experiment, <b><i>in</i></b>: Guelinckx, J. <i>Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering.</i> pp. 47-63","BEntID":306999,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Guelinckx, J. <i>Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering.</i> pp. 47-63","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Guelinckx, J.; Maes, J.; Van Den Driessche, P.; Geysen, B.; Dehairs, F.A.; Ollevier, F.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Guelinckx, J. <i>et al.</i>","Englishabstract":"Studies on diet or migration of organisms based on stable isotopes require precise estimates of how quickly stable isotope ratios change in the investigated tissues. Isotopic turnover rates in fish, however, are poorly understood. Prior to field applications of the stable isotope technique for investigating sand goby <i>Pomatoschistus minutus</i> migrations, a laboratory diet-switch experiment was conducted to (1) determine C and N isotopic turnover rates in sand goby muscle, liver and heart tissue, and (2) evaluate the relative contribution of growth and metabolic replacement to the total change in isotopic composition. Both time-based and growth-based models adequately described the carbon and nitrogen isotopic change in each tissue. The variation in isotopic turnover rates among the tissues and elements could be attributed to differences in metabolic activity. Muscle tissue had the slowest turnover rates, with half-lives of approximately 25 and 28 d for d<sup>13</sup>C and d<sup>15</sup>N, respectively. The shortest half-life value for d<sup>15</sup>N was in liver tissue (3 d) and for d<sup>13</sup>C in heart tissue (6 d). The rate of isotopic change in goby muscle tissue was mainly regulated by somatic growth, but metabolic replacement significantly accelerated the turnover rate for d<sup>13</sup>C. In liver and heart tissue, basal metabolism contributed considerably to the isotopic shift. As a result, effects of short-term food deprivation were only found in liver and heart tissue. Although the observed trophic fractionation factors were within reported ranges, they were exceptionally large for d<sup>13</sup>C in muscle and liver tissue.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Changes in d<sup>13</sup>C and d<sup>15</sup>N in different tissues of juvenile sand goby <i>Pomatoschistus minutus</i>: a laboratory diet-switch experiment","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"stable isotopes; carbon; nitrogen; isotopic turnover rate; metabolism; fasting; trophic enrichment; Gobiidae","OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2019-08-28","DateCreate":"2008-03-06","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":120533,"PubliDate":2008,"Pagination":"47-63","XtraPublOfAnaID":null,"ISBN":"978-90-8649-165-0","Volume":null,"Issue":null,"BRefMon":120527,"BRefMonRR":"<b>Guelinckx, J.</b> (2008). Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering. PhD Thesis. Katholieke Universiteit Leuven, Laboratorium voor Aquatische Ecologie: Leuven. ISBN 978-90-8649-165-0. 163 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":null,"SerRR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"StandardTitleMon":"Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering","StartPage":47,"Pages":17,"ToPubliDate":null,"BRefBibLvlCode":"M","SerNotes":null,"AutString":"Guelinckx, J."},"monrec":null,"serrec":null,"relations":null,"relationsRev":[{"XBRefID":119101,"RefStrFull":"<b>Guelinckx, J.; Maes, J.; Van Den Driessche, P.; Geysen, B.; Dehairs, F.A.; Ollevier, F.P.</b> (2007). Changes in d<sup>13</sup>C and d<sup>15</sup>N in different tissues of juvenile sand goby <i>Pomatoschistus minutus</i>: a laboratory diet-switch experiment. <i>Mar. Ecol. Prog. Ser. 341</i>: 205-215. <a href=\"https://dx.doi.org/10.3354/meps341205\" target=\"_blank\">https://dx.doi.org/10.3354/meps341205</a>","RelID":4,"RelationY":"Related to","StandardTitle":"Changes in d<sup>13</sup>C and d<sup>15</sup>N in different tissues of juvenile sand goby <i>Pomatoschistus minutus</i>: a laboratory diet-switch experiment"}],"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Guelinckx","Firstname":"Jef","Initials":"J.","Affiliation":"Laboratory of Aquatic Ecology, Katholieke Universiteit Leuven","Discriminator":null,"CorporateFlag":0,"BEntID":306999,"AutID":144068,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Katholieke Universiteit Leuven; Departement Biologie; Afdeling Dierenecologie en -systematiek; Laboratorium voor Aquatische Ecologie","ORCID":null,"PersID":5751,"InsID":10},{"AutName":"Maes","Firstname":"Joachim","Initials":"J.","Affiliation":"VITO, 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