Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers

Abstract 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 develo...

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Autores principales:	Jay R. Rooker, R. J. David Wells, Barbara A. Block, Hui Liu, Hannes Baumann, Wei-Chuan Chiang, Michelle Zapp Sluis, Nathaniel R. Miller, John A. Mohan, Seiji Ohshimo, Yosuke Tanaka, Michael A. Dance, Heidi Dewar, Owyn E. Snodgrass, Jen-Chieh Shiao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/118cc7245604414cb2364fc5acb15ae7
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spelling	oai:doaj.org-article:118cc7245604414cb2364fc5acb15ae72021-12-02T16:15:07ZNatal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers10.1038/s41598-021-93298-22045-2322https://doaj.org/article/118cc7245604414cb2364fc5acb15ae72021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93298-2https://doaj.org/toc/2045-2322Abstract 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.Jay R. RookerR. J. David WellsBarbara A. BlockHui LiuHannes BaumannWei-Chuan ChiangMichelle Zapp SluisNathaniel R. MillerJohn A. MohanSeiji OhshimoYosuke TanakaMichael A. DanceHeidi DewarOwyn E. SnodgrassJen-Chieh ShiaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jay R. Rooker R. J. David Wells Barbara A. Block Hui Liu Hannes Baumann Wei-Chuan Chiang Michelle Zapp Sluis Nathaniel R. Miller John A. Mohan Seiji Ohshimo Yosuke Tanaka Michael A. Dance Heidi Dewar Owyn E. Snodgrass Jen-Chieh Shiao Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
description	Abstract 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.
format	article
author	Jay R. Rooker R. J. David Wells Barbara A. Block Hui Liu Hannes Baumann Wei-Chuan Chiang Michelle Zapp Sluis Nathaniel R. Miller John A. Mohan Seiji Ohshimo Yosuke Tanaka Michael A. Dance Heidi Dewar Owyn E. Snodgrass Jen-Chieh Shiao
author_facet	Jay R. Rooker R. J. David Wells Barbara A. Block Hui Liu Hannes Baumann Wei-Chuan Chiang Michelle Zapp Sluis Nathaniel R. Miller John A. Mohan Seiji Ohshimo Yosuke Tanaka Michael A. Dance Heidi Dewar Owyn E. Snodgrass Jen-Chieh Shiao
author_sort	Jay R. Rooker
title	Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
title_short	Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
title_full	Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
title_fullStr	Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
title_full_unstemmed	Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
title_sort	natal origin and age-specific egress of pacific bluefin tuna from coastal nurseries revealed with geochemical markers
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/118cc7245604414cb2364fc5acb15ae7
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Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers

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