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Salmon migration affected by drug pollution in water from antianxiety medication

  • Researchers reported in *Science* on April 10 that clobazam affects salmon migration behavior in Sweden.
  • Benzodiazepines and opioids, found in rivers worldwide, accumulate in salmon brains, changing their behavior.
  • Salmon with clobazam implants migrated faster past dams, but shoaling behavior was affected in lab experiments.
  • Caudill noted that clobazam could make salmon two to eight times faster, but also vulnerable to predators.
  • Michelangeli stated drug pollution poses risks, and further study will assess long-term impacts on salmon populations.
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Antianxiety drugs in waterways are changing how salmon migrate

Pharmaceutical pollution in waterways is changing animal behavior. Exposure to an antianxiety drug is affecting migrating Atlantic salmon, according to a new study.

·Atlanta, United States
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tourniquet.quebec broke the news in on Tuesday, April 15, 2025.
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