Evidence map›Paper›PMID 42010468›Full record

ArticleBMC genomics2026

Genome refinement in Pacific bluefin tuna (Thunnus orientalis): chromosome-level assembly using hybrid linkage data.

Xi Fu, Daiki Saka, Kazutoshi Yoshitake, Taiju Saito, Milos Havelka, Osamu Nishimiya, Takahiro Matsubara, Rie Goto, Toshinao Ineno, Shuichi Asakawa

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Article in BMC genomics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Xi FuGraduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
Daiki SakaGraduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
Kazutoshi YoshitakeSchool of Marine Biosciences, Kitasato University, Kanagawa, 252-0373, Japan.
Taiju SaitoSouth Ehime Fisheries Research Center, Ehime University, Ainan, 798- 4205, Japan.
Milos HavelkaSouth Ehime Fisheries Research Center, Ehime University, Ainan, 798- 4205, Japan.
Osamu NishimiyaSouth Ehime Fisheries Research Center, Ehime University, Ainan, 798- 4205, Japan.
Takahiro MatsubaraSouth Ehime Fisheries Research Center, Ehime University, Ainan, 798- 4205, Japan.
Rie GotoSouth Ehime Fisheries Research Center, Ehime University, Ainan, 798- 4205, Japan.
Toshinao InenoAquaculture Research Institute, Shingu Station, Kindai University, Wakayama, 647-1101, Japan.
Shuichi AsakawaGraduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan. asakawa@g.ecc.u-tokyo.ac.jp.

Funding

Japan Society for the Promotion of Science 20H00429, 23H00342
6 · The paper itself

Abstract

backgroundHigh-quality reference genomes are fundamental for selective breeding and genetic engineering to improve aquaculture productivity. Here, we report an improved chromosome-level genome assembly of Pacific bluefin tuna (Thunnus orientalis), a commercially valuable species consumed worldwide. By integrating genetic linkage information from interspecific hybrids of Euthynnus affinis and T. orientalis, we anchored and oriented T. orientalis scaffolds into 24 pseudochromosomes.

resultsThe updated assembly achieved a scaffold N50 of 34.19 Mb, representing a notable improvement from 13.3 Mb, and contained 22,640 predicted protein-coding genes.

conclusionsThis resource provides a robust genomic foundation for future genetic and genomic studies to advance the selective breeding of T. orientalis in aquaculture.

Indexed as

ChromosomesGenetic LinkageGenomeGenomicsTunaAnimalsChromosome MappingMolecular Sequence AnnotationAquacultureGenome annotationGenome improvementLinkage mapPacific bluefin tuna

Identifiers

PMID42010468
PMCPMC13238094

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.