Migration dynamics of juvenile southern bluefin tuna

Abstract Large scale migrations are a key component of the life history of many marine species. We quantified the annual migration cycle of juvenile southern bluefin tuna (Thunnus maccoyii; SBT) and spatiotemporal variability in this cycle, based on a multi-decadal electronic tagging dataset. Behavi...

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Autores principales:	Toby A. Patterson, J. Paige Eveson, Jason R. Hartog, Karen Evans, Scott Cooper, Matt Lansdell, Alistair J. Hobday, Campbell R. Davies
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Southern Bluefin Great Australian Bight (GAB) Migration Cycle Archival Tags Model Switching Behavior Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2d83af594a47412eb11d751262b4ea11
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spelling	oai:doaj.org-article:2d83af594a47412eb11d751262b4ea112021-12-02T15:08:37ZMigration dynamics of juvenile southern bluefin tuna10.1038/s41598-018-32949-32045-2322https://doaj.org/article/2d83af594a47412eb11d751262b4ea112018-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-32949-3https://doaj.org/toc/2045-2322Abstract Large scale migrations are a key component of the life history of many marine species. We quantified the annual migration cycle of juvenile southern bluefin tuna (Thunnus maccoyii; SBT) and spatiotemporal variability in this cycle, based on a multi-decadal electronic tagging dataset. Behaviour-switching models allowed for the identification of cohesive areas of residency and classified the temporal sequence of movements within a migration cycle from austral summer foraging grounds in the Great Australian Bight (GAB) to winter foraging grounds in the Indian Ocean and Tasman Sea and back to the GAB. Although specific regions within the Indian Ocean were frequented, individuals did not always return to the same area in consecutive years. Outward migrations from the GAB were typically longer than return migrations back to the GAB. The timing of individual arrivals to the GAB, which may be driven by seasonality in prey availability, was more cohesive than the timing of departures from the GAB, which may be subject to the physiological condition of SBT. A valuable fishery for SBT operates in the GAB, as do a number of scientific research programs designed to monitor SBT for management purposes; thus, understanding SBT migration to and from the area is of high importance to a number of stakeholders.Toby A. PattersonJ. Paige EvesonJason R. HartogKaren EvansScott CooperMatt LansdellAlistair J. HobdayCampbell R. DaviesNature PortfolioarticleSouthern BluefinGreat Australian Bight (GAB)Migration CycleArchival TagsModel Switching BehaviorMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Southern Bluefin Great Australian Bight (GAB) Migration Cycle Archival Tags Model Switching Behavior Medicine R Science Q
spellingShingle	Southern Bluefin Great Australian Bight (GAB) Migration Cycle Archival Tags Model Switching Behavior Medicine R Science Q Toby A. Patterson J. Paige Eveson Jason R. Hartog Karen Evans Scott Cooper Matt Lansdell Alistair J. Hobday Campbell R. Davies Migration dynamics of juvenile southern bluefin tuna
description	Abstract Large scale migrations are a key component of the life history of many marine species. We quantified the annual migration cycle of juvenile southern bluefin tuna (Thunnus maccoyii; SBT) and spatiotemporal variability in this cycle, based on a multi-decadal electronic tagging dataset. Behaviour-switching models allowed for the identification of cohesive areas of residency and classified the temporal sequence of movements within a migration cycle from austral summer foraging grounds in the Great Australian Bight (GAB) to winter foraging grounds in the Indian Ocean and Tasman Sea and back to the GAB. Although specific regions within the Indian Ocean were frequented, individuals did not always return to the same area in consecutive years. Outward migrations from the GAB were typically longer than return migrations back to the GAB. The timing of individual arrivals to the GAB, which may be driven by seasonality in prey availability, was more cohesive than the timing of departures from the GAB, which may be subject to the physiological condition of SBT. A valuable fishery for SBT operates in the GAB, as do a number of scientific research programs designed to monitor SBT for management purposes; thus, understanding SBT migration to and from the area is of high importance to a number of stakeholders.
format	article
author	Toby A. Patterson J. Paige Eveson Jason R. Hartog Karen Evans Scott Cooper Matt Lansdell Alistair J. Hobday Campbell R. Davies
author_facet	Toby A. Patterson J. Paige Eveson Jason R. Hartog Karen Evans Scott Cooper Matt Lansdell Alistair J. Hobday Campbell R. Davies
author_sort	Toby A. Patterson
title	Migration dynamics of juvenile southern bluefin tuna
title_short	Migration dynamics of juvenile southern bluefin tuna
title_full	Migration dynamics of juvenile southern bluefin tuna
title_fullStr	Migration dynamics of juvenile southern bluefin tuna
title_full_unstemmed	Migration dynamics of juvenile southern bluefin tuna
title_sort	migration dynamics of juvenile southern bluefin tuna
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/2d83af594a47412eb11d751262b4ea11
work_keys_str_mv	AT tobyapatterson migrationdynamicsofjuvenilesouthernbluefintuna AT jpaigeeveson migrationdynamicsofjuvenilesouthernbluefintuna AT jasonrhartog migrationdynamicsofjuvenilesouthernbluefintuna AT karenevans migrationdynamicsofjuvenilesouthernbluefintuna AT scottcooper migrationdynamicsofjuvenilesouthernbluefintuna AT mattlansdell migrationdynamicsofjuvenilesouthernbluefintuna AT alistairjhobday migrationdynamicsofjuvenilesouthernbluefintuna AT campbellrdavies migrationdynamicsofjuvenilesouthernbluefintuna
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Migration dynamics of juvenile southern bluefin tuna

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