{"refrec":{"BRefID":340171,"RR":"<b>Rooker, J.R.; Wells, R.J.D.; Block, B.A.; Liu, H.; Baumann, H.; Chiang, W.-C.; Sluis, M.Z.; Miller, N.R.; Mohan, J.A.; Ohshimo, S.; Tanaka, Y.; Dance, M.A.; Dewar, H.; Snodgrass, O.E.; Shiao, J.-C.</b> (2021). Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers. <i>NPG Scientific Reports 11(1)</i>: 14216. <a href=\"https://dx.doi.org/10.1038/s41598-021-93298-2\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-93298-2</a>","BEntID":336806,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 11(1)</i>: 14216. <a href=\"https://dx.doi.org/10.1038/s41598-021-93298-2\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-93298-2</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Rooker, J.R.; Wells, R.J.D.; Block, B.A.; Liu, H.; Baumann, H.; Chiang, W.-C.; Sluis, M.Z.; Miller, N.R.; Mohan, J.A.; Ohshimo, S.; Tanaka, Y.; Dance, M.A.; Dewar, H.; Snodgrass, O.E.; Shiao, J.-C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Rooker, J.R. <i>et al.</i>","Englishabstract":"Geochemical chronologies were constructed from otoliths of adult Pacific bluefin tuna (PBT) to investigate the timing of age-specific egress of juveniles from coastal nurseries in the East China Sea or Sea of Japan to offshore waters of the Pacific Ocean. Element:Ca chronologies were developed for otolith Li, Mg, Mn, Zn, Sr, and Ba, and our assessment focused on the section of the otolith corresponding to the age-0 to age-1 + interval. Next, we applied a common time-series approach to geochemical profiles to identify divergences presumably linked to inshore-offshore migrations. Conspicuous geochemical shifts were detected during the juvenile interval for Mg:Ca, Mn:Ca, and Sr:Ca that were indicative of coastal-offshore transitions or egress generally occurring for individuals approximately 4–6 mo. old, with later departures (6 mo. or older) linked to overwintering being more limited. Changepoints in otolith Ba:Ca profiles were most common in the early age-1 period (ca. 12–16 mo.) and appear associated with entry into upwelling areas such as the California Current Large Marine Ecosystem following trans-Pacific migrations. Natal origin of PBT was also predicted using the early life portion of geochemical profile in relation to a baseline sample comprised of age-0 PBT from the two primary spawning areas in the East China Sea and Sea of Japan. Mixed-stock analysis indicated that the majority (66%) of adult PBT in our sample originated from the East China Sea, but individuals of Sea of Japan origin were also detected in the Ryukyu Archipelago.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:59.957746","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-07-19","DateCreate":"2021-07-19","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000674488400018","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41598-021-93298-2"},"refs":null,"anarec":{"AnaID":340171,"PubliDate":2021,"Pagination":"14216","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). 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