{"refrec":{"BRefID":217972,"RR":"<b>Valladares, S.; Planas, M.</b> (2012). Non-lethal dorsal fin sampling for stable isotope analysis in seahorses. <i>Aquat. Ecol. 46(3)</i>: 363-370. <a href=\"https://dx.doi.org/10.1007/s10452-012-9407-y\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-012-9407-y</a>","BEntID":209716,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Ecol. 46(3)</i>: 363-370. <a href=\"https://dx.doi.org/10.1007/s10452-012-9407-y\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-012-9407-y</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Valladares, S.; Planas, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Valladares, S.; Planas, M.","Englishabstract":"Sampling collection for stable isotope analysis has traditionally involved the sacrifice of the animal. Seahorses (<i>Hippocampus</i> spp.) are listed as threatened by the Convention on International Trade in Endangered Species (<a href=\"http://www.cites.org\">http://www.cites.org</a>) and consequently lethal sampling is undesirable. We evaluated the adequacy of dorsal fin tissue of adult seahorses <i>Hippocampus guttulatus</i> for stable isotope analysis as an alternative to lethal tissue sampling. Three seahorse tissues (dorsal fin, muscle, and liver) were analyzed for comparisons of δ<sup>15</sup>N and δ<sup>13</sup>C values. Similarities found between δ<sup>15</sup>N and δ<sup>13</sup>C values in dorsal fin and muscle tissue of <i>H. guttulatus</i> suggest that both tissues are adequate for stable isotope analysis to understand feeding ecology of seahorses. However, considering the threatened status of the species, dorsal fin tissue would be recommended in adult seahorses as a non-lethal sampling. The effect of lipid extraction on carbon and nitrogen stable isotope values was also evaluated in each seahorse tissues. Significant effects of lipids extraction did only occur for δ<sup>13</sup>C values in muscle and liver. It was found that lipid removal was not necessary to perform SIA in dorsal fin tissues. Due to the limited availability of fin tissue obtained from fin-clipping in seahorses, the relationship between the mass/surface of dorsal fin clip and stable isotope values was analyzed. δ<sup>15</sup>N and δ<sup>13</sup>C values in fin samples were found to be independent of the size of fin analyzed. According to our study, the use of fin-clipping sampling, with a minimum surface analyzed of 12.74 mm<sup>2</sup>, was found to be an adequate method for SIA in seahorses.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Non-lethal dorsal fin sampling for stable isotope analysis in seahorses","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-24 01:31:17.634007","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Stable isotopes; Non-lethal sampling","OtherDescriptors":null,"Notes":null,"AnaPub":2012,"MonPub":null,"DateUpdate":"2020-06-25","DateCreate":"2012-09-06","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000306849300009","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10452-012-9407-y"},"refs":null,"anarec":{"AnaID":217972,"PubliDate":2012,"Pagination":"363-370","XtraPublOfAnaID":null,"ISBN":null,"Volume":"46","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42197,"SerRR":"Aquatic Ecology. 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