Ocean 'dead zones' trigger sex changes in fish, posing extinction threat

Oxygen depletion in the world’s oceans, primarily caused by agricultural run-off and pollution, could spark the development of far more male fish than female, thereby threatening some species with extinction, according to a study published today on the website of the American Chemical Society journal, Environmental Science & Technology.

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<p><a href="http://www.physorg.com/news62855882.html">Ocean 'dead zones' trigger sex changes in fish, posing extinction threat</a></p> <p>Oxygen depletion in the world’s oceans, primarily caused by agricultural run-off and pollution, could spark the development of far more male fish than female, thereby threatening some species with extinction, according to a study published today on the website of the American Chemical Society journal, <i>Environmental Science & Technology</i>.</p>