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<p>The American bullfrog (<i>Aquarana catesbeiana</i>) is both an economically important aquaculture species and a globally distributed invasive organism with high environmental adaptability. In this study, we present a high-quality chromosome-level genome assembly for the species, comprising 13 chromosomes with a total length of 6.32 Gb and a scaffold N50 of 691.8 Mb. Genome completeness was evaluated at 95.5% using BUSCO and 99.9% using Merqury. Repetitive sequences accounted for 79.51% of the genome. Through a combination of RNA-seq, Ab initio and homology-based gene prediction, we identified 32,382 protein-coding genes, with 98.96% of these genes functionally annotated. This chromosome-level assembly provides an important resource for future studies on the evolution, functional genomics and molecular breeding of the American bullfrog.</p>

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A Chromosome-level genome assembly of the American bullfrog (Aquarana catesbeiana)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月10日

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  • Kai Zhang,
  • Yuxuan Zhang,
  • Ye Tian,
  • Bin Xu,
  • Xiewu Jiang,
  • Zhendong Qin,
  • Chun Liu,
  • Li Lin

摘要

The American bullfrog (Aquarana catesbeiana) is both an economically important aquaculture species and a globally distributed invasive organism with high environmental adaptability. In this study, we present a high-quality chromosome-level genome assembly for the species, comprising 13 chromosomes with a total length of 6.32 Gb and a scaffold N50 of 691.8 Mb. Genome completeness was evaluated at 95.5% using BUSCO and 99.9% using Merqury. Repetitive sequences accounted for 79.51% of the genome. Through a combination of RNA-seq, Ab initio and homology-based gene prediction, we identified 32,382 protein-coding genes, with 98.96% of these genes functionally annotated. This chromosome-level assembly provides an important resource for future studies on the evolution, functional genomics and molecular breeding of the American bullfrog.