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<p>The Japanes pavement ant, <i>Tetramorium tsushimae</i> Emery is an ecologically significant ant species recognized for its mutualistic interactions with aphids and other hemipterans. Here, we present the first chromosome-scale genome assembly for this species, generated using Oxford Nanopore long-read sequencing coupled with Pore-C scaffolding. The final assembly spans 259.2 Mb and is anchored to 13 chromosomes, with a scaffold N50 of 19.7 Mb. We identified 34,352 protein-coding genes, 58.9% of which were functionally annotated. The genome comprises 21.58% repetitive elements and exhibits 98.4% completeness based on BUSCO analysis. Gene family evolution analysis revealed orthogroup expansions and contractions, while synteny with <i>Cardiocondyla obscurior</i> Wheeler demonstrated extensive collinearity alongside lineage-specific rearrangements. This high-quality genome assembly provides a valuable foundation for future research into the evolution, ecology, and social behavior of <i>T. tsushimae</i>.</p>

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A chromosome-level genome assembly of the native populations of the Japanese pavement ant, Tetramorium tsushimae Emery (Hymenoptera: Formicidae)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月16日

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  • Anandapadmanaban Gokulanathan,
  • Sol-Moon Na,
  • Soo-Jung Suh

摘要

The Japanes pavement ant, Tetramorium tsushimae Emery is an ecologically significant ant species recognized for its mutualistic interactions with aphids and other hemipterans. Here, we present the first chromosome-scale genome assembly for this species, generated using Oxford Nanopore long-read sequencing coupled with Pore-C scaffolding. The final assembly spans 259.2 Mb and is anchored to 13 chromosomes, with a scaffold N50 of 19.7 Mb. We identified 34,352 protein-coding genes, 58.9% of which were functionally annotated. The genome comprises 21.58% repetitive elements and exhibits 98.4% completeness based on BUSCO analysis. Gene family evolution analysis revealed orthogroup expansions and contractions, while synteny with Cardiocondyla obscurior Wheeler demonstrated extensive collinearity alongside lineage-specific rearrangements. This high-quality genome assembly provides a valuable foundation for future research into the evolution, ecology, and social behavior of T. tsushimae.