Fish are becoming easier to catch ‘because traces of anti-depressants are getting into water supply

‘Making them more relaxed’

DAMIEN GAYLE
UK Daily Mail
Feb 16, 2013

Sleeping pills may be disturbing river ecosystems by turning fish into greedy, risk-taking loners, say researchers.

Scientists studied the behaviour of perch exposed to a sedative which is carried into waterways through sewage.

The drug, a benzodiazepine used to treat anxiety and insomnia called oxazepam, made the fish bolder and less social.

They left the safety of their schools to forage alone – making them vulnerable to predators – and also ate more quickly than normal.

‘Normally perch are shy and hunt in schools,’ said study leader Dr Tomas Brodin, from Umea University in Sweden.

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This article was posted: Saturday, February 16, 2013 at 6:46 am

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