{"refrec":{"BRefID":354612,"RR":"<b>Denis, J.; Rabhi, K.; Le Loc'h, F.; Ben Rais Lasram, F.; Boutin, K.; Kazour, M.; Diop, M.; Gruselle, M.-C.; Amara, R.</b> (2022). Role of estuarine habitats for the feeding ecology of the European eel (<i>Anguilla anguilla</i> L.). <i>PLoS One 17(7)</i>: e0270348. <a href=\"https://dx.doi.org/10.1371/journal.pone.0270348\" target=\"_blank\">https://dx.doi.org/10.1371/journal.pone.0270348</a>","BEntID":352325,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>PLoS One 17(7)</i>: e0270348. <a href=\"https://dx.doi.org/10.1371/journal.pone.0270348\" target=\"_blank\">https://dx.doi.org/10.1371/journal.pone.0270348</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Denis, J.; Rabhi, K.; Le Loc'h, F.; Ben Rais Lasram, F.; Boutin, K.; Kazour, M.; Diop, M.; Gruselle, M.-C.; Amara, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Denis, J. <i>et al.</i>","Englishabstract":"This study aims to characterize and compare the feeding ecology of the European eels (<em>Anguilla anguilla</em> L.) during the continental phase (i.e. yellow and silver) along a salinity gradient (i.e. lower, middle and upper) in six northern France estuaries (i.e. brackish water). The diet and stable isotopic (i.e. δ<sup>15</sup>N and δ<sup>13</sup>C values) compositions of eels collected with a fyke net in six estuaries (Slack, Wimereux, Liane, Canche, Authie and Somme estuaries) located along the French coast of the eastern English Channel per season over a year were described by combining gut content and stable isotope analyses. Eel guts were dominated by typical BW prey, Malacostraca and Actinopterygii (54% and 40%, respectively), with the gammare <em>Gammarus zaddachi</em> and the green crab <em>Carcinus maenas</em> (38% and 14%, respectively), and smaller yellow eels of <em>A</em>. <em>anguilla</em> and juvenile European flounder, <em>Platichthys flesus</em> (19% and 14%, respectively) being the most frequently found in their guts. The δ<sup>13</sup>C values of a majority of eels confirmed the sea- and brackish water-specific carbon resources. Dietary and isotopic niche revealed no clear change between total length, silvering stages and seasons, but a significant difference between salinity gradients and estuaries. Eels δ<sup>13</sup>C values showed significant enrichment from upper to lower along the estuaries while the δ<sup>15</sup>N values showed an inverse effect, with the lowest values in the lower part and highest in the upper part. Higher variability in δ<sup>13</sup>C values in larger estuaries suggested that eels feed on a wide range of food sources than in smaller estuaries. While eels in the smaller estuaries fed mainly on Actinopterygii prey, eels in the larger ones had a lower trophic level (i.e. δ<sup>15</sup>N values) and fed mainly on Malacostraca prey. This spatial difference in dietary and isotopic niche is discussed in relation to biological structure of eel and environmental variables.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Role of estuarine habitats for the feeding ecology of the European eel (<i>Anguilla anguilla</i> L.)","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":2022,"MonPub":null,"DateUpdate":"2022-08-08","DateCreate":"2022-08-05","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000835338100026","VABBcode":null,"OpenAcc":1,"DOI":"10.1371/journal.pone.0270348"},"refs":null,"anarec":{"AnaID":354612,"PubliDate":2022,"Pagination":"e0270348","XtraPublOfAnaID":null,"ISBN":null,"Volume":"17","Issue":"7","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":123954,"SerRR":"PLoS One. 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