{
  "id": 6439488,
  "title": "Salinity is associated with habitat use and mitochondrial lineage diversity in halophilic Ephydra flies (Diptera: Ephydridae)",
  "url": "https://urgent.news/2026/09/09/salinity-is-associated-with-habitat-use-and-mitochondrial-lineage",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-09T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.03.749233v1?rss=1"
  },
  "original_language": "en",
  "account": "Brine flies of the Ephydra genus, known for their ability to survive in harsh environments, specifically thrive in high-salinity and high-carbonate waters. Despite their ecological significance, there is limited understanding of their evolutionary history. A study focused on an under-researched population of Ephydra living in former industrial salt evaporation ponds in the San Francisco Bay Area (SFBA). During a six-month period in 2024, researchers observed and collected Ephydra specimens, taking note of the salinity levels in their habitats. They discovered that E. millbrae and E. gracilis have distinct preferences for salinity levels. To further understand the relationship between salinity and the flies' genetic diversity, the researchers analyzed the DNA from Ephydra specimens collected from various locations and over a 40-year period. This analysis generated the most comprehensive genealogy of the group based on a single mitochondrial gene. The findings suggest that salinity levels are not only a factor in the flies' habitat use but also play a role in their evolutionary relationships. This research offers valuable insights into the natural history of extremophile flies in the SFBA, addressing gaps in our knowledge about the evolutionary history of the Ephydra genus.",
  "summary": "Brine flies of the genus Ephydra (Diptera: Ephydridae) are ubiquitous extremophile animals whose larval forms are able to thrive in high-stress environments, including hypersaline and high carbonate waters. Despite their historical and ecological importance, little is known about their evolutionary history. Here, we focus on an understudied population of Ephydra living in former industrial salt…",
  "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."
}