{"refrec":{"BRefID":16902,"RR":"<b>Vranken, G.; Heip, C.H.R.</b> (1986). The productivity of marine nematodes, <b><i>in</i></b>: Muus, K. (Ed.) <i>Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. Ophelia: International Journal of Marine Biology,</i> 26: pp. 429-442","BEntID":16902,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Muus, K. (Ed.) <i>Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. European Marine Biology Symposia,</i> 20: pp. 429-442","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Vranken, G.; Heip, C.H.R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Vranken, G.; Heip, C.H.R.","Englishabstract":"The productivity of marine nematodes was studied from laboratory experiments investigating the relationship between minimum generation time and temperature, the daily birth rate as calculated from life-tables taking fecundity and survivorship into account and the temperature regime in the field. The life cycle of <i>Monhystera disjuncta</i> is described. Females produce about 200 eggs in agnotobiotic conditions over about 70 days: this represents 17 times their own body weight. The mean generation time is 20 days at 12°C and this species can produce 23 generations in the field each year. The maximum annual P/B is equal to 69. The annual P/B calculated from birth rate is 60. From similar studies on five other nematode species it is concluded that the life-cycle turnover is equal to three but the number of generations annually produced in the field varies from one to twenty. Annual P/B for the species studied and from literature data on other species lies between 4 and 69. The use of a single P/B value for nematodes is therefore invalid. Scaling with body weight is possible with the equation log P/B =-1.288 -0.440 log M<sub>s</sub> where M<sub>s</sub> is the weight at sexual maturity in kcal.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"The productivity of marine nematodes","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":"2001-11-14","DateCreate":"2001-08-29","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":"WOS:A1986G084700030","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":16902,"PubliDate":1986,"Pagination":"429-442","XtraPublOfAnaID":null,"ISBN":"87-981066-4-3","Volume":"20","Issue":null,"BRefMon":16816,"BRefMonRR":"<b>Muus, K. (Ed.)</b> (1986). 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