Cargando…
Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry
Atlantic bluefin tuna (Thunnus thynnus) are highly migratory fish with a contemporary range spanning the North Atlantic Ocean. Bluefin tuna populations have undergone severe decline and the status of the fish within each population remains uncertain. Improved biological knowledge, particularly of na...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6426944/ https://www.ncbi.nlm.nih.gov/pubmed/30894557 http://dx.doi.org/10.1038/s41598-019-40065-z |
_version_ | 1783405102659272704 |
---|---|
author | Block, Barbara A. Whitlock, Rebecca Schallert, Robert J Wilson, Steve Stokesbury, Michael J. W. Castleton, Mike Boustany, Andre |
author_facet | Block, Barbara A. Whitlock, Rebecca Schallert, Robert J Wilson, Steve Stokesbury, Michael J. W. Castleton, Mike Boustany, Andre |
author_sort | Block, Barbara A. |
collection | PubMed |
description | Atlantic bluefin tuna (Thunnus thynnus) are highly migratory fish with a contemporary range spanning the North Atlantic Ocean. Bluefin tuna populations have undergone severe decline and the status of the fish within each population remains uncertain. Improved biological knowledge, particularly of natural mortality and rates of mixing of the western (GOM) and eastern (Mediterranean) populations, is key to resolving the current status of the Atlantic bluefin tuna. We evaluated the potential for acoustic tags to yield empirical estimates of mortality and migration rates for long-lived, highly migratory species such as Atlantic bluefin tuna. Bluefin tuna tagged in the Gulf of St. Lawrence (GSL) foraging ground (2009–2016) exhibited high detection rates post release, with 91% crossing receiver lines one year post tagging, 61% detected after year two at large, with detections up to ~1700 days post deployment. Acoustic detections per individual fish ranged from 3 to 4759 receptions. A spatially-structured Bayesian mark recapture model was applied to the acoustic detection data for Atlantic bluefin tuna electronically tagged in the GSL to estimate the rate of instantaneous annual natural mortality. We report a median estimate of 0.10 yr(−1) for this experiment. Our results demonstrate that acoustic tags can provide vital fisheries independent estimates for life history parameters critical for improving stock assessment models. |
format | Online Article Text |
id | pubmed-6426944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-64269442019-03-28 Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry Block, Barbara A. Whitlock, Rebecca Schallert, Robert J Wilson, Steve Stokesbury, Michael J. W. Castleton, Mike Boustany, Andre Sci Rep Article Atlantic bluefin tuna (Thunnus thynnus) are highly migratory fish with a contemporary range spanning the North Atlantic Ocean. Bluefin tuna populations have undergone severe decline and the status of the fish within each population remains uncertain. Improved biological knowledge, particularly of natural mortality and rates of mixing of the western (GOM) and eastern (Mediterranean) populations, is key to resolving the current status of the Atlantic bluefin tuna. We evaluated the potential for acoustic tags to yield empirical estimates of mortality and migration rates for long-lived, highly migratory species such as Atlantic bluefin tuna. Bluefin tuna tagged in the Gulf of St. Lawrence (GSL) foraging ground (2009–2016) exhibited high detection rates post release, with 91% crossing receiver lines one year post tagging, 61% detected after year two at large, with detections up to ~1700 days post deployment. Acoustic detections per individual fish ranged from 3 to 4759 receptions. A spatially-structured Bayesian mark recapture model was applied to the acoustic detection data for Atlantic bluefin tuna electronically tagged in the GSL to estimate the rate of instantaneous annual natural mortality. We report a median estimate of 0.10 yr(−1) for this experiment. Our results demonstrate that acoustic tags can provide vital fisheries independent estimates for life history parameters critical for improving stock assessment models. Nature Publishing Group UK 2019-03-20 /pmc/articles/PMC6426944/ /pubmed/30894557 http://dx.doi.org/10.1038/s41598-019-40065-z Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Block, Barbara A. Whitlock, Rebecca Schallert, Robert J Wilson, Steve Stokesbury, Michael J. W. Castleton, Mike Boustany, Andre Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title | Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title_full | Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title_fullStr | Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title_full_unstemmed | Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title_short | Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry |
title_sort | estimating natural mortality of atlantic bluefin tuna using acoustic telemetry |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6426944/ https://www.ncbi.nlm.nih.gov/pubmed/30894557 http://dx.doi.org/10.1038/s41598-019-40065-z |
work_keys_str_mv | AT blockbarbaraa estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT whitlockrebecca estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT schallertrobertj estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT wilsonsteve estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT stokesburymichaeljw estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT castletonmike estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry AT boustanyandre estimatingnaturalmortalityofatlanticbluefintunausingacoustictelemetry |