{"refrec":{"BRefID":75025,"RR":"<b>Buitrago, E.; Lodeiros, C.; Lunar, K.; Alvarado, D.; Indorf, F.; Frontado, K.; Moreno, P.; Vasquez, Z.</b> (2005). Mass production of competent larvae of the sea urchin <i>Lytechinus variegatus</i> (Echinodermata: Echinoidea). <i>Aquacult. Int. 13(4)</i>: 359-367. <a href=\"https://dx.doi.org/10.1007/s10499-004-6551-y\" target=\"_blank\">https://dx.doi.org/10.1007/s10499-004-6551-y</a>","BEntID":70701,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Aquacult. Int. 13(4)</i>: 359-367. <a href=\"https://dx.doi.org/10.1007/s10499-004-6551-y\" target=\"_blank\">https://dx.doi.org/10.1007/s10499-004-6551-y</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Buitrago, E.; Lodeiros, C.; Lunar, K.; Alvarado, D.; Indorf, F.; Frontado, K.; Moreno, P.; Vasquez, Z.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Buitrago, E. <i>et al.</i>","Englishabstract":"We evaluated the mass production of competent larvae of the sea urchin <i>Lytechinus variegatus</i> cultured at three initial densities (0.25, 0.5, and 1 larvae per ml) and fed <i>Chaetoceros muelleri</i>. Survival, length, dry weight of larvae, and larval stage index (LSI) were estimated in each treatment as a function of the density. Density decreased during the experiment due to mortality, but the percentage was similar in all three treatments (68.5, 66.7, and 76.0%). The experiment was stopped at 13 days after fertilization, when most of the larvae were competent and had settled. There were no significant differences in survival (exceeded 65% in all treatments), length and larval stage index among treatments. However, larvae weight in the two low density treatments (1.1 ± 0.11 mg and 1.2 ± 0.05 mg, respectively) was greater than the high density treatment (0.59±0.376 mg). This study demonstrates that competent larvae of <i>Lytechinus variegatus</i> can be produced with less than 25% mortality in 13 days when cultures are started at densities of 0.25–1 larvae/ml. Culturing at higher densities (0.5–1 larvae/ml) had no apparent disadvantages and would reduce the cost of production.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Mass production of competent larvae of the sea urchin <i>Lytechinus variegatus</i> (Echinodermata: Echinoidea)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:11.250203","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2020-10-07","DateCreate":"2005-08-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000229935200007","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10499-004-6551-y"},"refs":null,"anarec":{"AnaID":75025,"PubliDate":2005,"Pagination":"359-367","XtraPublOfAnaID":null,"ISBN":null,"Volume":"13","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44242,"SerRR":"Aquaculture International. 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