Gap-free genome of male large yellow croaker published
Researchers have published a complete, gap-free genome assembly of a male large yellow croaker (Larimichthys crocea), aiding aquaculture and sex determination s
August 15, 2026
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Source: nature.com
A new study has reported the first telomere-to-telomere (T2T) gap-free genome assembly for a male large yellow croaker (Larimichthys crocea), a commercially important marine fish in China. The research provides a complete genomic landscape, filling gaps that were previously unresolved in the reference genome.
The assembled genome covers all chromosomes with high accuracy, enabling detailed analysis of sex-determination regions and repetitive sequences. This resource is expected to facilitate genetic improvement and breeding programs for this species, which is a major aquaculture product in China.
The study was published in the journal Scientific Data on August 15, 2026. The authors used advanced sequencing technologies, including PacBio HiFi and Oxford Nanopore ultra-long reads, to achieve the gapless assembly.
This work represents a significant step forward in fish genomics, providing a valuable reference for comparative genomics and evolutionary studies among teleosts.
β Frequently Asked Questions
What is a telomere-to-telomere (T2T) genome assembly?
A T2T assembly is a complete genome sequence from one end (telomere) to the other for every chromosome, with no gaps. It provides the most accurate and complete reference for genetic studies.
Why is the large yellow croaker important?
The large yellow croaker is one of the most important marine fish species for aquaculture in China, with high economic value. A complete genome helps improve breeding and disease resistance.
What technologies were used for this genome assembly?
The researchers used PacBio HiFi and Oxford Nanopore ultra-long reads, which are advanced sequencing technologies that produce long, accurate reads essential for gap-free assemblies.
