{
  "annotation_id": "303e3a0b-b461-4075-a935-f92a8944fc29",
  "date_created": "2026-03-02T18:01:32.342000Z",
  "date_modified": "2026-03-02T18:01:32.342000Z",
  "file_hash": "c734e0505e2db8f05885262023e3bc862a9a98be6319bac7332a48c05bc7498d",
  "private": false,
  "record": {
    "abstract": "A square lattice is introduced into the Penna model for biological aging in\norder to study the evolution of diploid sexual populations under certain\nconditions when one single locus in the individual\u0027s genome is considered as\nidentifier of species. The simulation results show, after several generations,\nthe flourishing and coexistence of two separate species in the same\nenvironment, i.e., one original species splits up into two on the same\nterritory (sympatric speciation). As well, the mortalities obtained are in a\ngood agreement with the Gompertz law of exponential increase of mortality with\nage.",
    "arxiv_id": "q-bio/0406038",
    "authors": [
      "A. O. Sousa"
    ],
    "categories": [
      "q-bio.PE",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1140/epjb/e2004-00225-7",
    "title": "Sympatric speciation in an age-structured population living on a lattice",
    "url": "https://arxiv.org/abs/q-bio/0406038"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2b8efcf6-50a0-472f-96ab-a9360d15d15f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}