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<p><i>Clarias fuscus</i>, renowned for its resilience and nutritional value, is a significant aquaculture species in China. To facilitate further genetic research and breeding programs in this species, we generated an improved high-quality chromosome-level genome assembly of a female <i>C. fuscus</i> using MGI, PacBio, and Hi-C sequencing technologies. The final genome assembly spans 982.84 Mb, with contig and scaffold N50 values of 36.16 Mb and 37.66 Mb, respectively, and successfully anchors 99.60% of the sequences to 28 pseudochromosomes. We also predicted 24,849 protein-coding genes, with 97.3% of them functionally annotated. BUSCO analysis indicates a completeness of 97.03% for the assembly and 96.6% for the annotation. This study significantly advances the genomic resources available for <i>C. fuscus</i> and supports future molecular breeding and functional genomics research.</p>

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An improved chromosome-level genome assembly and annotation of Hong Kong catfish (Clarias fuscus)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月1日

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  • Yu Chen,
  • Xinghua Lin,
  • Dayan Zhou,
  • Yulei Zhang,
  • Qian Wang,
  • Huapu Chen,
  • Dongneng Jiang,
  • Siping Deng,
  • Guangli Li,
  • Peipei Wang,
  • Changxu Tian

摘要

Clarias fuscus, renowned for its resilience and nutritional value, is a significant aquaculture species in China. To facilitate further genetic research and breeding programs in this species, we generated an improved high-quality chromosome-level genome assembly of a female C. fuscus using MGI, PacBio, and Hi-C sequencing technologies. The final genome assembly spans 982.84 Mb, with contig and scaffold N50 values of 36.16 Mb and 37.66 Mb, respectively, and successfully anchors 99.60% of the sequences to 28 pseudochromosomes. We also predicted 24,849 protein-coding genes, with 97.3% of them functionally annotated. BUSCO analysis indicates a completeness of 97.03% for the assembly and 96.6% for the annotation. This study significantly advances the genomic resources available for C. fuscus and supports future molecular breeding and functional genomics research.