{"refrec":{"BRefID":15893,"RR":"<b>Daan, R.</b> (1986). Food intake and growth of <i>Sarsia tubulosa</i> (Sars, 1835), with quantitative estimates of predation on copepod populations. <i>Neth. J. Sea Res. 20(1)</i>: 67-74","BEntID":15893,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Neth. J. Sea Res. 20(1)</i>: 67-74","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Daan, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Daan, R.","Englishabstract":"In laboratory tests food intake by the hydromedusa <i>Sarsia tubulosa</i>, which feeds on copepods, was quantified. Estimates of maximum predation are presented for 10 size classes of <i>Sarsia</i>. Growth rates, too, were determined in the laboratory, at 12°C under <i>ad libitum</i> food conditions. Mean gross food conversion for all size classes averaged 12%. From the results of a frequent sampling programme, carried out in the Texelstroom (a tidal inlet of the Dutch Wadden Sea) in 1983, growth rates of <i>Sarsia</i> in the field and population densities are derived. Growth in the field equalled maximum growth under experimental conditions, which suggests that <i>Sarsia in situ</i> can feed at an optimum level. Two estimates of predation pressure in the field matched very closely and lead to the conclusion that the impact of <i>Sarsia</i> predation on copepod standing stocks in the Dutch coastal area, including the Wadden Sea, is generally negligible.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Food intake and growth of <i>Sarsia tubulosa</i> (Sars, 1835), with quantitative estimates of predation on copepod populations","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":1986,"MonPub":null,"DateUpdate":"2019-07-10","DateCreate":"2001-08-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":15893,"PubliDate":1986,"Pagination":"67-74","XtraPublOfAnaID":null,"ISBN":null,"Volume":"20","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44573,"SerRR":"Netherlands Journal of Sea Research. 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