{"refrec":{"BRefID":339645,"RR":"<b>Marchessaux, G.; Belloni, B.</b> (2021). Expansion of <i>Mnemiopsis leidyi</i> in the French Mediterranean lagoons along the Gulf of Lion. <i>J. Sea Res. 168</i>: 101995. <a href=\"https://dx.doi.org/10.1016/j.seares.2021.101995\" target=\"_blank\">https://dx.doi.org/10.1016/j.seares.2021.101995</a>","BEntID":336280,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>J. Sea Res. 168</i>: 101995. <a href=\"https://dx.doi.org/10.1016/j.seares.2021.101995\" target=\"_blank\">https://dx.doi.org/10.1016/j.seares.2021.101995</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Marchessaux, G.; Belloni, B.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Marchessaux, G.; Belloni, B.","Englishabstract":"The ctenophore <em>Mnemiopsis leidyi</em> A. Agassiz, 1865 originates from estuaries and coastal waters along Atlantic coastlines from the Chesapeake Bay, USA, to Argentina. Through ballast waters, the species has spread the past 30&nbsp;years over Eurasia. On the French Mediterranean coastlines, <em>Mnemiopsis leidyi</em> was first formally identified in the Berre Lagoon in 2005 and has been episodically present in other Mediterranean lagoons as Bages-Sigean, Vaccarès, and Estomac. Since 2010–2011 no update of the distribution of <em>Mnemiopsis leidyi</em> has been made. Since 2019, many records of <em>Mnemiopsis leidyi</em> have been reported in other French Mediterranean lagoons along the coast of the Gulf of Lion. In this context, a field survey on the French Mediterranean coast was conducted in July 2020 to measure the expansion of the <em>Mnemiopsis</em> population in coastal lagoons which are potential refuge habitats for this species. <em>Mnemiopsis leidyi</em> was present in 8 different areas: Or, Pérols, Vic, Ingril, Rhône-Sète Channel, Bages-Sigean, and Salses-Leucate. We were able to quantify for the first time the abundance and size structure of <em>Mnemiopsis</em> in the lagoons of Or, Pérols, Vic, Ingril, Rhône-Sète Channel, and Salses-Leucate. A decrease in the abundance of <em>Mnemiopsis leidyi</em> was observed from 1 ind m<sup>−3</sup> (Ingril Lagoon) to 28 ind m<sup>−3</sup> (Grec Lagoon) and 42 ind m<sup>−3</sup> (Rhône-Sète Channel) between the North and the South along the Rhône-Sète Channel in parallel to the increase of salinity (from 20 to 41). The abundances measured in Bages-Sigean and Salses-Leucate lagoons were similar: 6 ind m<sup>−3</sup> and 7 ind m<sup>−3</sup> respectively.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Expansion of <i>Mnemiopsis leidyi</i> in the French Mediterranean lagoons along the Gulf of Lion","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-14 01:33:20.786533","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Invasive species; Mediterranean lagoons; Ctenophores","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-07-05","DateCreate":"2021-07-05","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000614722000002","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.seares.2021.101995"},"refs":null,"anarec":{"AnaID":339645,"PubliDate":2021,"Pagination":"101995","XtraPublOfAnaID":null,"ISBN":null,"Volume":"168","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43261,"SerRR":"Journal of Sea Research. 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