{"refrec":{"BRefID":5409,"RR":"<b>Zenitani, H.; Yamada, S.</b> (2000). The relation between spawning area and biomass of Japanese pilchard, <i>Sardinops melanosticus</i>, along the Pacific coast of Japan. <i>Fish. Bull. 98(4)</i>: 842-848","BEntID":5409,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Fish. Bull. 98(4)</i>: 842-848","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zenitani, H.; Yamada, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zenitani, H.; Yamada, S.","Englishabstract":"When stocks are depleted, direct assessments of population levels are not only difficult but may be highly inaccurate. The work reported here was motivated by the need to manage the collapse of the far eastern sardine (<i>Sardinops melanostictus</i>) population. Spawning area was chosen as the first indicator of population size because the spatial spread of the stock increases when the spawning population increases. Our objective was to clarify the relation between spawning area and the spawning biomass of this species off the Pacific coast of Japan in order to estimate biomass with the spawning area data. The pilchard spawning area (A<sub>1</sub>) in a given year was calculated by summing the areas of 1° longitude x 1° latitude squares where early developmental stage eggs were present. The optimal relationship between A<sub>1</sub> and the spawning biomass (B) was A<sub>1</sub>=2.518 B<sup>0.4610</sup>, not a simple linear relationship. One cause of the nonlinear relationship seemed to be that pilchard egg aggregations were distributed over space in a patchy manner. Finally, we introduced an approximate method for estimating the pilchard spawning biomass by using the inverted equation of the optimal relationship betweenA<sub>1</sub> andB; (B=0.135A<sub>1</sub><sup>2.1691</sup>).","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The relation between spawning area and biomass of Japanese pilchard, <i>Sardinops melanosticus</i>, along the Pacific coast of Japan","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":2000,"MonPub":null,"DateUpdate":"2001-01-11","DateCreate":"2001-01-11","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":5409,"PubliDate":2000,"Pagination":"842-848","XtraPublOfAnaID":null,"ISBN":null,"Volume":"98","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44319,"SerRR":"Fishery Bulletin. US Government Printing Office: Washington, D.C..  ISSN 0090-0656; e-ISSN 1937-4518","StandardTitleSer":"Fishery Bulletin","ISSN":"0090-0656","AbbrevSer":"Fish. Bull.","StandardTitleMon":null,"StartPage":842,"Pages":7,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":"Nummering verandert vanaf 1963, issuenummer wordt aangepast en men gaat over na vier nummers per jaar. Volumenummer wordt aangepast. In het begin bestond het nr. van het Bulletin uit een extract van het bulletin van het US Bureau of fisheries."},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Zenitani","Firstname":"Hiromu","Initials":"H.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":5409,"AutID":8672,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Yamada","Firstname":"Sakutaro","Initials":"S.","Affiliation":null,"Discriminator":"Sakutaro","CorporateFlag":0,"BEntID":5409,"AutID":9049,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":null,"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"US Government Printing Office","City":"Washington, D.C."}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":5409,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":null,"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Haspeslagh, Jan, J.","newSesDate":{"date":"2001-01-11 08:39:26.760000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Haspeslagh, Jan, J.","updSesDate":{"date":"2001-01-11 08:39:26.760000","timezone_type":3,"timezone":"Europe/Brussels"}}}