{
  "abstract": "Panagrellus redivivus is a free-living nematode that served as an early model system for nematode biology prior to Caenorhabditis elegans. As a member of Clade IV, a clade harboring major plant-parasitic (e.g., Bursaphelenchus xylophilus) and animal-parasitic (e.g., Strongyloides spp.) species, P. redivivus represents a crucial, phylogenetically proximate non-parasitic reference for investigating the evolution of parasitism. Here, we present a chromosome-level genome assembly of P. redivivus constructed using Oxford Nanopore long reads, Illumina short reads, and Hi-C scaffolding. The assembly is resolved into five chromosome-scale scaffolds, with completeness validated by Hi-C contact maps and the identification of a non-canonical telomeric repeat motif. The assembly demonstrates high gene-space completeness (97.1% BUSCO) and contains 17,839 predicted protein-coding genes. Comparative orthology analysis revealed extensive orthogroup sharing between P. redivivus and Clade IV parasites, enabling comparative evolutionary studies with reduced confounding effects from deep lineage divergence. This high-quality genome provides a key resource for investigating the genetic basis of distinctive biological traits, including ovoviviparity, as well as gene family dynamics and parasite evolution.",
  "abstract_shown": true,
  "affiliations": [
    "The University of Tokyo"
  ],
  "article_type": "New results",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "K. Sato"
    },
    {
      "name": "S. Sun"
    },
    {
      "name": "T. Yamashita"
    },
    {
      "name": "A. Yoshida"
    },
    {
      "name": "R. Shinya"
    },
    {
      "name": "P. W. Sternberg"
    },
    {
      "affs": [
        0
      ],
      "name": "T. Kikuchi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5emzjx0cbtc44.bib",
  "cited_by": 0,
  "doi": "10.64898/2026.10.22.761182",
  "fulltext_url": "https://www.biorxiv.org/content/10.64898/2026.10.22.761182v1.full",
  "id": "5emzjx0cbtc44",
  "issns": [],
  "landing_url": "https://www.biorxiv.org/content/10.64898/2026.10.22.761182v1",
  "language": null,
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "biorxiv",
      "genomics"
    ],
    [
      "openalex",
      "1110|Nematode management and characterization studies"
    ]
  ],
  "openalex": "W7223473311",
  "pdf_url": "https://www.biorxiv.org/content/10.64898/2026.10.22.761182v1.full.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5emzjx0cbtc44.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:25Z",
      "native_id": "10.64898/2026.10.22.761182",
      "source": "biorxiv",
      "url": "https://www.biorxiv.org/content/10.64898/2026.10.22.761182v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "biorxiv:genomics",
      "subfield": "genetics-genomics"
    }
  ],
  "title": "A chromosome-level genome assembly of the classical model nematode Panagrellus redivivus for comparative studies of parasitism evolution",
  "title_text": "A chromosome-level genome assembly of the classical model nematode Panagrellus redivivus for comparative studies of parasitism evolution",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:25Z",
  "url": "https://research.draconitic.com/paper/5emzjx0cbtc44",
  "venue": "bioRxiv",
  "versions": []
}