Cargando…
Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci
The blackfin tuna, Thunnus atlanticus, is a small tropical tuna exploited by recreational and commercial fisheries in various parts of its range. Information on stock structure is needed to develop management plans for this species but is currently lacking. In this work, 470 blackfin tuna from nine...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9198023/ https://www.ncbi.nlm.nih.gov/pubmed/35701584 http://dx.doi.org/10.1038/s41598-022-13857-z |
_version_ | 1784727531862097920 |
---|---|
author | Saillant, Eric A. Luque, Patricia L. Short, Emily Antoni, Luca Reynal, Lionel Pau, Cedric Arocha, Freddy Roque, Pollyana Hazin, Fabio |
author_facet | Saillant, Eric A. Luque, Patricia L. Short, Emily Antoni, Luca Reynal, Lionel Pau, Cedric Arocha, Freddy Roque, Pollyana Hazin, Fabio |
author_sort | Saillant, Eric A. |
collection | PubMed |
description | The blackfin tuna, Thunnus atlanticus, is a small tropical tuna exploited by recreational and commercial fisheries in various parts of its range. Information on stock structure is needed to develop management plans for this species but is currently lacking. In this work, 470 blackfin tuna from nine geographic populations were assayed at 13 homologous microsatellite markers to provide a first assessment of stock structure across the species range. The overall divergence among locality samples was very low (overall FST = 0.0004) indicating high connectivity of blackfin tuna across their range. No clear grouping of localities in differentiated units was inferred but structuring followed a weak isolation by distance pattern (r = 0.16, P = 0.032). Pairwise exact tests and spatial analysis of molecular variance suggested divergence of the sample collected offshore Baía Formosa (Brazil) possibly reflecting reproductive isolation of Brazilian populations from those in the Caribbean region and further north. Further study of the status of Brazilian populations and the transition between this region and the Caribbean is warranted. Cryptic subdivision within the Northern Hemisphere part of the range is possible and should be evaluated using increased marker density and a more comprehensive geographic coverage. |
format | Online Article Text |
id | pubmed-9198023 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-91980232022-06-16 Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci Saillant, Eric A. Luque, Patricia L. Short, Emily Antoni, Luca Reynal, Lionel Pau, Cedric Arocha, Freddy Roque, Pollyana Hazin, Fabio Sci Rep Article The blackfin tuna, Thunnus atlanticus, is a small tropical tuna exploited by recreational and commercial fisheries in various parts of its range. Information on stock structure is needed to develop management plans for this species but is currently lacking. In this work, 470 blackfin tuna from nine geographic populations were assayed at 13 homologous microsatellite markers to provide a first assessment of stock structure across the species range. The overall divergence among locality samples was very low (overall FST = 0.0004) indicating high connectivity of blackfin tuna across their range. No clear grouping of localities in differentiated units was inferred but structuring followed a weak isolation by distance pattern (r = 0.16, P = 0.032). Pairwise exact tests and spatial analysis of molecular variance suggested divergence of the sample collected offshore Baía Formosa (Brazil) possibly reflecting reproductive isolation of Brazilian populations from those in the Caribbean region and further north. Further study of the status of Brazilian populations and the transition between this region and the Caribbean is warranted. Cryptic subdivision within the Northern Hemisphere part of the range is possible and should be evaluated using increased marker density and a more comprehensive geographic coverage. Nature Publishing Group UK 2022-06-14 /pmc/articles/PMC9198023/ /pubmed/35701584 http://dx.doi.org/10.1038/s41598-022-13857-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Saillant, Eric A. Luque, Patricia L. Short, Emily Antoni, Luca Reynal, Lionel Pau, Cedric Arocha, Freddy Roque, Pollyana Hazin, Fabio Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title | Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title_full | Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title_fullStr | Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title_full_unstemmed | Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title_short | Population structure of blackfin tuna (Thunnus atlanticus) in the western Atlantic Ocean inferred from microsatellite loci |
title_sort | population structure of blackfin tuna (thunnus atlanticus) in the western atlantic ocean inferred from microsatellite loci |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9198023/ https://www.ncbi.nlm.nih.gov/pubmed/35701584 http://dx.doi.org/10.1038/s41598-022-13857-z |
work_keys_str_mv | AT saillanterica populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT luquepatricial populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT shortemily populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT antoniluca populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT reynallionel populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT paucedric populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT arochafreddy populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT roquepollyana populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci AT hazinfabio populationstructureofblackfintunathunnusatlanticusinthewesternatlanticoceaninferredfrommicrosatelliteloci |