{"refrec":{"BRefID":200889,"RR":"<b>van Damme, C.J.G.; Dickey-Collas, M.; Rijnsdorp, A.D.; Kjesbu, O.S.</b> (2009). Fecundity, atresia, and spawning strategies of Atlantic herring (<i>Clupea harengus</i>). <i>Can. J. Fish. Aquat. Sci. 66(12)</i>: 2130-2141. <a href=\"https://dx.doi.org/10.1139/F09-153\" target=\"_blank\">https://dx.doi.org/10.1139/F09-153</a>","BEntID":193149,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Can. J. Fish. Aquat. Sci. 66(12)</i>: 2130-2141. <a href=\"https://dx.doi.org/10.1139/F09-153\" target=\"_blank\">https://dx.doi.org/10.1139/F09-153</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"van Damme, C.J.G.; Dickey-Collas, M.; Rijnsdorp, A.D.; Kjesbu, O.S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"van Damme, C.J.G. <i>et al.</i>","Englishabstract":"Atlantic herring (Clupea horengus) have contrasting spawning strategies, with apparently genetically similar fish \"choosing\" different spawning seasons, different egg sizes, and different spawning areas. in the North Sea, both autumn- and winter-spawning herring share the same summer feeding area but have different spawning areas. Females of both spawning types start their oocyte development in April-May. Oocyte development is influenced by the body energy content, during the maturation cycle, fecundity is down-regulated through atresia in relation to the actual body condition. Hence, fecundity estimates must account for the relative time of sampling. The down-regulation over the whole maturation period is approximately 20% in autumn- and 50% in winter-spawning herring. The development of the oocytes is the same for both spawning strategies until autumn when autumn spawners spawn a larger number of small eggs. In winter spawners, oocyte development and down-regulation of fecundity continues, resulting in larger eggs and lower number spawned. In theory, autumn and winter spawners could therefore switch spawning strategies, indicating a high level of reproductive plasticity.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Fecundity, atresia, and spawning strategies of Atlantic herring (<i>Clupea harengus</i>)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:31:40.786536","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2009,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2010-12-14","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000273419200009","VABBcode":null,"OpenAcc":0,"DOI":"10.1139/F09-153"},"refs":null,"anarec":{"AnaID":200889,"PubliDate":2009,"Pagination":"2130-2141","XtraPublOfAnaID":null,"ISBN":null,"Volume":"66","Issue":"12","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42535,"SerRR":"Canadian Journal of Fisheries and Aquatic Sciences = Journal canadien des sciences halieutiques et aquatiques. 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