{"refrec":{"BRefID":120216,"RR":"<b>Comtet, T.; Riera, P.</b> (2006). δ<sup>13</sup>C and δ<sup>15</sup>N changes after dietary shift in veliger larvae of the slipper limpet <i>Crepidula fornicata</i>: an experimental evidence. <i>Helgol. Mar. Res. 60(4)</i>: 281-285. <a href=\"http://dx.doi.org/10.1007/s10152-006-0043-6\" target=\"_blank\">http://dx.doi.org/10.1007/s10152-006-0043-6</a>","BEntID":114408,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Helgol. Mar. Res. 60(4)</i>: 281-285. <a href=\"https://dx.doi.org/10.1007/s10152-006-0043-6\" target=\"_blank\">https://dx.doi.org/10.1007/s10152-006-0043-6</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Comtet, T.; Riera, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Comtet, T.; Riera, P.","Englishabstract":"δ<sup>13</sup>C and δ<sup>15</sup>N measurements are still poorly conducted in benthic invertebrate larvae. To assess the δ<sup>13</sup>C and δ<sup>15</sup>N changes occurring after a dietary shift, experiments were conducted on veliger larvae of <i>Crepidula fornicata</i> fed with two cultured microalgae (<i>Isochrysis galbana</i> and <i>Pavlova lutheri</i>) of known isotopic composition, <sup>13</sup>C- enriched and <sup>15</sup>N-depleted compared to the initial values of the larvae. Rapid changes in larval δ<sup>13</sup>C and δ<sup>15</sup>N were observed after the dietary shift, with an increase in δ<sup>13</sup>C and a decrease in δ<sup>15</sup> N. After 19 days of feeding, isotopic equilibrium was still not reached, a period which is close to the duration of the pelagic life of the larvae. This implies that the isotopic composition measured in field-collected larvae might only partly reflect actual larval feeding but also the parental isotopic signature, especially during the early developmental stages. Isotopic measurements in marine invertebrate larvae should thus be interpreted cautiously. In planktonic food web investigations, the study of field-collected larvae of different size/developmental stage may reduce potential misinterpretations. 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