{"refrec":{"BRefID":247287,"RR":"<b>Ianora, A.; di Carlo, B.S.</b> (1988). Observations on egg production rates and seasonal changes in the internal morphology of Mediterranean populations of <i>Acartia clausi</i> and <i>Centropages typicus</i>, <b><i>in</i></b>: Boxshall, G.A. <i>et al.</i> <i>Biology of copepods: Proceedings of the third international conference on Copepoda. Developments in Hydrobiology,</i> 47: pp. 247-253. <a href=\"http://dx.doi.org/10.1007/978-94-009-3103-9_23\" target=\"_blank\">http://dx.doi.org/10.1007/978-94-009-3103-9_23</a>","BEntID":238988,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Boxshall, G.A. <i>et al.</i> <i>Biology of copepods: Proceedings of the third international conference on Copepoda. Developments in Hydrobiology,</i> 47: pp. 247-253. <a href=\"http://dx.doi.org/10.1007/978-94-009-3103-9_23\" target=\"_blank\">http://dx.doi.org/10.1007/978-94-009-3103-9_23</a>","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Ianora, A.; di Carlo, B.S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Ianora, A.; di Carlo, B.S.","Englishabstract":"Egg production rates in wild populations of <em class=\"a-plus-plus\">Acartia clausi</em> and <em class=\"a-plus-plus\">Centropages typicus</em>, sampled biweekly in the Gulf of Naples from October 1985 to July 1987, showed marked seasonal fluctuations with maximum values in early spring that preceeded the annual maxima for adult female densities in summer. A positive correlation between chlorophyll <em class=\"a-plus-plus\">a</em> concentrations and egg production was evident only during the early spring phytoplankton bloom. A strong diminution in egg deposition occurred later in spring and continued throughout the summer notwithstanding high chlorophyll concentrations. In winter, when population abundances for adult females were lowest, egg production rates were always higher than in summer. Differences in egg production rates coincided with pronounced morphological changes between summer and winter populations of both species. The most striking of these changes consisted, in winter, in the presence of a dark brown fluid-like mass of granular material that seemed to freely bathe the gonads. The presence of this substance only during periods of elevated egg production suggests that it may enhance egg production rates when the adult population reaches minimum annual levels. Such a mechanism of self-regulation may operate to dampen the effects of environmental variability thereby contributing to maintain a ‘conservative’ structure in coastal copepod communities.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"Observations on egg production rates and seasonal changes in the internal morphology of Mediterranean populations of <i>Acartia clausi</i> and <i>Centropages typicus</i>","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":"Copepods; Seasonal cycles","OtherDescriptors":null,"Notes":null,"AnaPub":1988,"MonPub":null,"DateUpdate":"2015-05-27","DateCreate":"2015-05-27","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1007/978-94-009-3103-9_23"},"refs":null,"anarec":{"AnaID":247287,"PubliDate":1988,"Pagination":"247-253","XtraPublOfAnaID":null,"ISBN":"978-94-010-7895-5","Volume":"47","Issue":null,"BRefMon":247226,"BRefMonRR":"<b>Boxshall, G.A.; Schminke, H.K. (Ed.)</b> (1988). Biology of copepods: Proceedings of the third international conference on Copepoda. <i>Developments in Hydrobiology</i>, 47. Kluwer Academic Publishers: Dordrecht/Boston/London. ISBN 978-94-010-7895-5; e-ISBN 978-94-009-3103-9. XII, 639 pp. <a href=\"https://dx.doi.org/10.1007/978-94-009-3103-9\" target=\"_blank\">https://dx.doi.org/10.1007/978-94-009-3103-9</a>","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":7270,"SerRR":"<b>Dumont, H.J. (Ed.)</b> Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht.  ISSN 0167-8418","StandardTitleSer":"Developments in Hydrobiology","ISSN":"0167-8418","AbbrevSer":"Dev. Hydrobiol.","StandardTitleMon":"Biology of copepods: Proceedings of the third international conference on Copepoda","StartPage":247,"Pages":7,"ToPubliDate":null,"BRefBibLvlCode":"MS","SerNotes":"Enkel nog digitaal bewaard","AutString":"Boxshall, G.A.; Schminke, H.K. 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