Agricultural contaminant impacts fish reproductive behaviour

A common growth-promoting hormone used worldwide in the cattle industry has been found to affect the sexual behaviours of fish at a very low concentration in waterways – with potentially serious ecological and evolutionary ...

More male fish "feminized" by pollution on the Basque coast

The UPV/EHU's Cell Biology in Environmental Toxicology group has conducted research using thick-lipped grey mullet and has analysed specimens in six zones: Arriluze and Gernika in 2007 and 2008, and since then, Santurtzi, ...

Urban fish masculinized by hormone-mimicking chemicals

(Phys.org) —It's a man's world for fish in a San Francisco Bay-Delta estuary. Silverside fish collected from an urban beach in Suisun Marsh were more masculinized, but with smaller and less healthy gonads, than were neighboring ...

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