Toxins are changing sex of fish and animals

7th December 2006, Comments 0 comments

7 December 2006 , MADRID — Scientists have found toxins are turning fish and animals into transsexuals.

7 December 2006

MADRID — Scientists have found toxins are turning fish and animals into transsexuals.

Male carp have been discovered with ovaries, while some sheelfish have been discovered to have tiny penises.

The Spanish daily El Pais reported on Thursday exposure to toxic chemicals is blamed for these sex changes.

A compound called tributyltin, widely used on ships since the 1950s to prevent the growth of organisms such as barnacles on the hulls, was discovered to produce sex changes
in some species.

The substance was banned in 2003, but its effects are
expected to last for several decades.

Rodolfo Barreiro, professor of ecology at La Coruna University said: “We found large amounts of affected animals.”

The sex-change phenomenon was first discovered in Spain in 1999, and since then studies have proliferated.

[Copyright EFE with Expatica]

Subject: Spanish news

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