Sample contamination explains evidence of close kin proximity in yellowfin tuna (Thunnus albacares) in the Western and Central Pacific Ocean

Giulia Anderson; Jed I Macdonald; Monal Lal; John Hampton; Neville Smith; Ciro Rico

doi:10.3389/fmars.2023.1204884

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Sample contamination explains evidence of close kin proximity in yellowfin tuna (Thunnus albacares) in the Western and Central Pacific Ocean

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Sample contamination explains evidence of close kin proximity in yellowfin tuna (Thunnus albacares) in the Western and Central Pacific Ocean

Giulia Anderson, Jed I Macdonald, Monal Lal, John Hampton, Neville Smith and Ciro Rico

Frontiers of Marine Science, Vol.10, pp.1-9

2023

DOI: https://doi.org/10.3389/fmars.2023.1204884

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Abstract

Yellowfin tuna

population genetic structure

cross-contamination

functional panmixia

Wahlund effect

Pacific Ocean

Anderson et al.'s 2019 paper 'Close Kin Proximity in Yellowfin Tuna (Thunnus albacares) as a Driver of Population Genetic Structure in the Tropical Western and Central Pacific' provided observations of genetically related individuals among sampled yellowfin tuna. Resampling of some individuals from the original study produced very different sequencing results when compared with the original dataset, one possible explanation of which is cross-contamination among the original samples. Re-analyses produced no indication of functional strong population structure, including a very slightly and consistent heterozygosity deficit with only one statistically significant pairwise FST value of 0.002. We identified only one pair of half siblingsgenetically similar individuals that could still be an artefact of lingering contamination. These new results therefore support a functionally panmictic and robusthighly connected population of yellowfin tuna in the study area, although we do not rule out the potential for local adaptation driven by non-observed loci or genetic sub-structure operating at more contemporary scales.

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Title: Sample contamination explains evidence of close kin proximity in yellowfin tuna (Thunnus albacares) in the Western and Central Pacific Ocean
Authors: Giulia Anderson (Corresponding Author) - Pacific Community
Jed I Macdonald (Author) - Pacific Community
Monal Lal (Author) - University of the Sunshine Coast, Queensland, Australian Centre for Pacific Islands Research
John Hampton (Author) - Pacific Community
Neville Smith (Author) - Pacific Community
Ciro Rico (Author) - Consejo Superior de Investigaciones Científicas
Publication details: Frontiers of Marine Science, Vol.10, pp.1-9
Publisher: Frontiers Research Foundation
Date published: 2023
DOI: 10.3389/fmars.2023.1204884
ISSN: 2296-7745
Copyright note: © 2023 Anderson, Macdonald, Lal, Hampton, Smith and Rico. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Organisation Unit: Australian Centre for Pacific Islands Research; School of Science, Technology and Engineering
Language: English
Record Identifier: 99975398202621
Output Type: Journal article

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