{
  "id": 2998626,
  "title": "Genetically informed distribution models refine predictions for the overwintering range of Helicoverpa armigera in North America",
  "url": "https://urgent.news/2026/08/24/genetically-informed-distribution-models-refine-predictions-for-the",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-24T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.21.746245v1?rss=1"
  },
  "original_language": "en",
  "account": "Invasive pests necessitate proactive management. Species distribution models (SDMs) are commonly employed to predict where invasive species may spread post-introduction, although these models struggle with several constraints. One such limitation involves the assumption of consistent ecological niches across a species' range, which has spurred interest in designing SDMs that account for local adaptation. However, few methods have achieved this separation of local adaptation from population structure. In this study, researchers developed and implemented a sequential SDM approach that integrates experimentally validated connections between genotype, phenotype, and environment to forecast the risk of establishment in a major agricultural pest. By harnessing genomic data from 738 individuals, they characterized the geographic distribution of alleles at a significant locus for cold tolerance (tret1) in Helicoverpa armigera, a crop pest of considerable economic concern in North America. The findings indicate that a recently identified North American population harbors a cold-adapted tret1 allele, which may have facilitated its survival. The study quantifies the impact of cold-adapted tret1 on the potential invasive range of H. armigera in North America under existing and prospective climate scenarios. The analysis reveals that cold-adapted tret1 could significantly broaden the potential range of H. armigera, with future expansion likely driven by cold-adapted individuals. The results underscore the critical role of considering intraspecific variation in risk assessments and management strategies for invasive species.",
  "summary": "The ecological and economic threat posed by invasive pests demands proactive mitigation. Species distribution models (SDMs) are widely used in efforts to predict where invasive species might spread after introduction, though such models face several limitations. Among these is the unrealistic assumption of niche uniformity throughout a species' range. This has led to interest in developing SDMs…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}