{"refrec":{"BRefID":77752,"RR":"<b>Lejeusne, C.; Chevaldonné, P.</b> (2005). Population structure and life history of <i>Hemimysis margalefi</i> (Crustacea: Mysidacea), a ‘thermophilic’ cave-dwelling species benefiting from the warming of the NW Mediterranean. <i>Mar. Ecol. Prog. Ser. 287</i>: 189-199. <a href=\"https://dx.doi.org/10.3354/meps287189\" target=\"_blank\">https://dx.doi.org/10.3354/meps287189</a>","BEntID":73294,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Ecol. Prog. Ser. 287</i>: 189-199. <a href=\"https://dx.doi.org/10.3354/meps287189\" target=\"_blank\">https://dx.doi.org/10.3354/meps287189</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lejeusne, C.; Chevaldonné, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lejeusne, C.; Chevaldonné, P.","Englishabstract":"Dark submarine caves are an extreme and fragmented habitat in which mysids (Crustacea:Mysidacea) of the genus <i>Hemimysis</i> can be found. Hemimysis speluncola has long been thedominant mysid species of the NW Mediterranean caves, but with the recent warming of this region,its congener <i>H. margalefi</i> has replaced it. Nothing is known about the biology and ecology of <i>H. margalefi</i>and here, we provide the first information about its demographic structure and reproductivebiology in a cave recently affected by the species shift. We conducted monthly sampling for 4 yr inthe Jarre Island cave, near Marseilles (France), where a population of <i>H. margalefi</i> established itselfin the late 1990s. Population dynamics were followed by monitoring length-frequency histogramsand the influence of temperature on several life-history traits was investigated. <i>H. margalefi</i> reproducesall year round and the brood size depends on female size. Recruitment is discontinuous andoccurs when post-nauplioid larvae are 1.3 to 2.0 mm long. Four annual and overlapping cohorts(about 6 mo long) underline more intensive periods of breeding. Females can produce up to 2 successivecohorts during their life. Whatever the maturity stage, females present larger sizes than males.Seasonal variations of water temperature have a strong influence on different life-history traits of <i>H.margalefi</i>, such as mean sizes of the different cohorts, length of intermoult stages and growth rate.Some population dynamics features of <i>H. margalefi</i> are a further indication that it is a species with anaffinity for warm water, which has recently benefited from the warmer conditions in the NW Mediterranean,colonising new areas and replacing its congener <i>H. speluncola</i> in most of its former range.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Population structure and life history of <i>Hemimysis margalefi</i> (Crustacea: Mysidacea), a ‘thermophilic’ cave-dwelling species benefiting from the warming of the NW Mediterranean","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-08 01:30:48.031914","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2005-11-17","DateCreate":"2005-11-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000227950300017","VABBcode":null,"OpenAcc":1,"DOI":"10.3354/meps287189"},"refs":null,"anarec":{"AnaID":77752,"PubliDate":2005,"Pagination":"189-199","XtraPublOfAnaID":null,"ISBN":null,"Volume":"287","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43354,"SerRR":"Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe.  ISSN 0171-8630; e-ISSN 1616-1599","StandardTitleSer":"Marine Ecology Progress Series","ISSN":"0171-8630","AbbrevSer":"Mar. Ecol. Prog. 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