{"refrec":{"BRefID":4956,"RR":"<b>Guettaf, M.; San Martin, G.A.; Francour, P.</b> (2000). Interpopulation variability of the reproductive cycle of <i>Paracentrotus lividus</i> (Echinodermata: Echinoidea) in the south-western Mediterranean. <i>J. Mar. Biol. Ass. U.K. 80</i>: 899-907. <a href=\"https://dx.doi.org/10.1017/S0025315400002885\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315400002885</a>","BEntID":4956,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Biol. Ass. U.K. 80</i>: 899-907. <a href=\"https://dx.doi.org/10.1017/S0025315400002885\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315400002885</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Guettaf, M.; San Martin, G.A.; Francour, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Guettaf, M.; San Martin, G.A.; Francour, P.","Englishabstract":"The spawning of <i>Paracentrotus lividus</i> has been determined on the basis of the annual gonad index cycle at three sites in the Algiers area presenting low, intermediate and strong hydrodynamism. Three biotopes (<i>Posidonia oceanica</i> beds, rocky substrate with photophilous algae and overgrazed rocky substrate) and two depths (1-3 m and 6-10 m) were considered at these sites, the sex-ratio was always strongly in favour of females (2:1 to 3:1). In all sites but one, there were marked differences in the gonad index and the spawning period between sites; the gonad index reached its maximum value at the site with the weakest hydrodynamism, and the minimum value at the site with the strongest hydrodynamism. Spawning took place in April- May and August-September at the site with the weakest hydrodynamism, in April-June and October-December at the site with intermediate hydrodynamism and only in winter at the site with maximum hydrodynamism. The coexistence, on regional scale, of these reproductive cycles might enable <i>Paracentrotus lividus</i> to compensate the mortality during planktonic larval phase by the fact that spawning of this sea urchin occurred in all seasons.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Interpopulation variability of the reproductive cycle of <i>Paracentrotus lividus</i> (Echinodermata: Echinoidea) in the south-western Mediterranean","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-02 01:30:58.345169","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2000,"MonPub":null,"DateUpdate":"2000-12-11","DateCreate":"2000-12-11","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000165459500016","VABBcode":null,"OpenAcc":0,"DOI":"10.1017/S0025315400002885"},"refs":null,"anarec":{"AnaID":4956,"PubliDate":2000,"Pagination":"899-907","XtraPublOfAnaID":null,"ISBN":null,"Volume":"80","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43277,"SerRR":"Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge.  ISSN 0025-3154; e-ISSN 1469-7769","StandardTitleSer":"Journal of the Marine Biological Association of the United Kingdom","ISSN":"0025-3154","AbbrevSer":"J. Mar. Biol. Ass. 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