Ancient DNA SNP-panel data suggests stability in bluefin tuna genetic diversity despite centuries of fluctuating catches in the eastern Atlantic and Mediterranean

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dc.contributor.authorAndrews, Adam J.
dc.contributor.authorPuncher, Gregory N.
dc.contributor.authorBernal‑Casasola, Darío
dc.contributor.authorDi Natale, Antonio
dc.contributor.authorMassari, Francesco
dc.contributor.authorOnar, Vedat
dc.contributor.authorToker, Nezir Yaşar
dc.contributor.authorHanke, Alex
dc.contributor.authorPavey, Scott A.
dc.contributor.authorSavojardo, Castrense
dc.contributor.authorMartelli, Pier Luigi
dc.contributor.authorCasadio, Rita
dc.contributor.authorCilli, Elisabetta
dc.contributor.authorMorales‑Muñiz, Arturo
dc.contributor.authorMantovani, Barbara
dc.contributor.authorTinti, Fausto
dc.contributor.authorCariani, Alessia
dc.date.accessioned2023-05-25T17:40:49Z
dc.date.available2023-05-25T17:40:49Z
dc.date.issued2021-10-20
dc.description.abstractAtlantic bluefin tuna (Thunnus thynnus; BFT) abundance was depleted in the late 20th and early 21st century due to overfishing. Historical catch records further indicate that the abundance of BFT in the Mediterranean has been fluctuating since at least the 16th century. Here we build upon previous work on ancient DNA of BFT in the Mediterranean by comparing contemporary (2009–2012) specimens with archival (1911–1926) and archaeological (2nd century BCE–15th century CE) specimens that represent population states prior to these two major periods of exploitation, respectively. We successfully genotyped and analysed 259 contemporary and 123 historical (91 archival and 32 archaeological) specimens at 92 SNP loci that were selected for their ability to differentiate contemporary populations or their association with core biological functions. We found no evidence of genetic bottlenecks, inbreeding or population restructuring between temporal sample groups that might explain what has driven catch fluctuations since the 16th century. We also detected a putative adaptive response, involving the cytoskeletal protein synemin which may be related to muscle stress. However, these results require further investigation with more extensive genome-wide data to rule out demographic changes due to overfishing, and other natural and anthropogenic factors, in addition to elucidating the adaptive drivers related to these.
dc.description.copyright© The Author(s) 2021. 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/.
dc.identifier.issn2045-2322
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/22596
dc.language.isoen
dc.publisherNature Research
dc.relation.hasversionhttps://doi.org/10.1038/s41598-021-99708-9
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subject.disciplineBiology
dc.titleAncient DNA SNP-panel data suggests stability in bluefin tuna genetic diversity despite centuries of fluctuating catches in the eastern Atlantic and Mediterranean
dc.typejournal article
oaire.citation.endPage11
oaire.citation.startPage1
oaire.citation.titleScientific Reports
oaire.citation.volume11
oaire.license.conditionhttp://creativecommons.org/licenses/by/4.0/
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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