Thursday, January 5, 2012

Hatcheries alter salmon genetics in one generation

Research has shown that the impact of hatcheries on salmonids is so profound that in just one generation traits are selected that allows fish to survive and prosper in the hatchery environment. The speed at which this evolution and natural selection takes place surprised the researchers. These findings were published in Proceedings of the National Academy of Sciences.
The research has confirmed that the primary impact of hatcheries is a change in fish genetics, as opposed to temporary environmental effects. "We've known for some time that hatchery-born fish are less successful at survival and reproduction in the wild," said Michael Blouin, a professor of zoology at Oregon State University. Read more ...

This blog is written by Martin Little, The Aquaculturists, published and supported by the International Aquafeed Magazine from Perendale Publishers. To get your copy of  'PPLAPP' click here.
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