Drastic loss of genetic diversity of Columbia chinook


 salmon discovered

Researchers at Washington State University have discovered that chinook salmon from the Columbia River basin have lost about two-thirds of their genetic diversity.

To arrive at this conclusion, the specialists compared the DNA of bone samples of some salmon collected more than 7,000 years ago with those of current species captured in the Snake and Columbia rivers.

The results of the study were presented in an article published in the journal PLOS One, in which researchers provide "the first direct measure" of the reduction of genetic diversity that chinook salmon has experienced since...................................

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