Otolith geochemistry reflects life histories of Pacific bluefin tuna.
Understanding biological and environmental factors that influence movement behaviors and population connectivity of highly migratory fishes is essential for cooperative international management and conservation of exploited populations, like bluefin tuna. Pacific bluefin tuna Thunnus orientalis (PBT...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2022-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0275899 |
| _version_ | 1797990754247770112 |
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| author | John A Mohan Heidi Dewar Owyn E Snodgrass Nathan R Miller Yosuke Tanaka Seiji Ohshimo Jay R Rooker Malcom Francis R J David Wells |
| author_facet | John A Mohan Heidi Dewar Owyn E Snodgrass Nathan R Miller Yosuke Tanaka Seiji Ohshimo Jay R Rooker Malcom Francis R J David Wells |
| author_sort | John A Mohan |
| collection | DOAJ |
| description | Understanding biological and environmental factors that influence movement behaviors and population connectivity of highly migratory fishes is essential for cooperative international management and conservation of exploited populations, like bluefin tuna. Pacific bluefin tuna Thunnus orientalis (PBT) spawn in the western Pacific Ocean and then juveniles disperse to foraging grounds across the North Pacific. Several techniques have been used to characterize the distribution and movement of PBT, but few methods can provide complete records across ontogeny from larvae to adult in individual fish. Here, otolith biominerals of large PBT collected from the western, eastern, and south Pacific Ocean, were analyzed for a suite of trace elements across calcified/proteinaceous growth zones to investigate patterns across ontogeny. Three element:Ca ratios, Li:Ca, Mg:Ca, and Mn:Ca displayed enrichment in the otolith core, then decreased to low stable levels after age 1-2 years. Thermal and metabolic physiologies, common diets, or ambient water chemistry likely influenced otolith crystallization, protein content, and elemental incorporation in early life. Although similar patterns were also exhibited for otolith Sr:Ca, Ba:Ca and Zn:Ca in the first year, variability in these elements differed significantly after age-2 and in the otolith edges by capture region, suggesting ocean-specific environmental factors or growth-related physiologies affected otolith mineralization across ontogeny. |
| first_indexed | 2024-04-11T08:41:31Z |
| format | Article |
| id | doaj.art-e7e580d1a0734550b5f4fdf043d6ca8a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-11T08:41:31Z |
| publishDate | 2022-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-e7e580d1a0734550b5f4fdf043d6ca8a2022-12-22T04:34:12ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-011710e027589910.1371/journal.pone.0275899Otolith geochemistry reflects life histories of Pacific bluefin tuna.John A MohanHeidi DewarOwyn E SnodgrassNathan R MillerYosuke TanakaSeiji OhshimoJay R RookerMalcom FrancisR J David WellsUnderstanding biological and environmental factors that influence movement behaviors and population connectivity of highly migratory fishes is essential for cooperative international management and conservation of exploited populations, like bluefin tuna. Pacific bluefin tuna Thunnus orientalis (PBT) spawn in the western Pacific Ocean and then juveniles disperse to foraging grounds across the North Pacific. Several techniques have been used to characterize the distribution and movement of PBT, but few methods can provide complete records across ontogeny from larvae to adult in individual fish. Here, otolith biominerals of large PBT collected from the western, eastern, and south Pacific Ocean, were analyzed for a suite of trace elements across calcified/proteinaceous growth zones to investigate patterns across ontogeny. Three element:Ca ratios, Li:Ca, Mg:Ca, and Mn:Ca displayed enrichment in the otolith core, then decreased to low stable levels after age 1-2 years. Thermal and metabolic physiologies, common diets, or ambient water chemistry likely influenced otolith crystallization, protein content, and elemental incorporation in early life. Although similar patterns were also exhibited for otolith Sr:Ca, Ba:Ca and Zn:Ca in the first year, variability in these elements differed significantly after age-2 and in the otolith edges by capture region, suggesting ocean-specific environmental factors or growth-related physiologies affected otolith mineralization across ontogeny.https://doi.org/10.1371/journal.pone.0275899 |
| spellingShingle | John A Mohan Heidi Dewar Owyn E Snodgrass Nathan R Miller Yosuke Tanaka Seiji Ohshimo Jay R Rooker Malcom Francis R J David Wells Otolith geochemistry reflects life histories of Pacific bluefin tuna. PLoS ONE |
| title | Otolith geochemistry reflects life histories of Pacific bluefin tuna. |
| title_full | Otolith geochemistry reflects life histories of Pacific bluefin tuna. |
| title_fullStr | Otolith geochemistry reflects life histories of Pacific bluefin tuna. |
| title_full_unstemmed | Otolith geochemistry reflects life histories of Pacific bluefin tuna. |
| title_short | Otolith geochemistry reflects life histories of Pacific bluefin tuna. |
| title_sort | otolith geochemistry reflects life histories of pacific bluefin tuna |
| url | https://doi.org/10.1371/journal.pone.0275899 |
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