US EditionPharmaceutical pollution alters migration behavior in salmon, study shows
- A study published in Science found that wild salmon became less risk-averse when exposed to the psychoactive drug clobazam.
- Experiments with wild salmon showed those exposed to clobazam passed through hydropower dams faster than a control group not exposed.
- While increased migration success may seem positive, disrupting natural behaviors can negatively impact ecosystems, and pharmaceutical pollution is widespread in waterways globally.
37 Articles
37 Articles
The question of how salmon is affected by involuntary use of pharmaceutical drugs has been seriously asked by an international group of scientists studying the pollution of water bodies with drugs. To understand how psychoactive substances released into the water can affect fish, researchers watched salmon migrate from the Swedish Dalälven River to the Baltic for two years. The authors' conclusions are disappointing: drug pollution can not only …
Drug pollution alters salmon migration
Study reveals commonly detected environmental levels of clobazam -- a medication often prescribed for sleep disorders -- increased the river-to-sea migration success of juvenile salmon in the wild. The research team employed slow-release pharmaceutical implants and animal-tracking transmitters to monitor how exposure to clobazam and the opioid painkiller tramadol -- another common pharmaceutical pollutant -- affected the behaviour and migration …
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Salmon on benzos warn of pharmaceutical pollution's impacts
A juvenile Atlantic salmon. Credit: Jörgen Wiklund While modern medicine allows us to manage or cure previously untreatable diseases and conditions, pharmaceuticals and their metabolites have untold consequences when they make their way into the environment. “Pharmaceutical pollutants are an emerging global issue, with over 900 different substances having now been detected in waterways around the world,” says Dr Marcus Michelangeli of Griffith U…
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