A newly published collection of more than 20 studies by leading university scientists and government fishery researchers in Alaska, British Columbia, Washington, Oregon, California, Russia and Japan provides ...

Biology - Ecology

May 14, 2012 3 / 5 (1) 0

Scientists have found that only about ten percent of the fall-run Chinook salmon spawning in California's Mokelumne River are naturally produced wild salmon. A massive influx of hatchery-raised fish that return to spawn in ...

Biology - Ecology

Feb 08, 2012 5 / 5 (2) 0

The impact of hatcheries on salmon is so profound that in just one generation traits are selected that allow fish to survive and prosper in the hatchery environment, at the cost of their ability to thrive ...

Biology - Evolution

Dec 19, 2011 4.4 / 5 (14) 100 |

Genetic research is showing that healthy steelhead runs in Pacific Northwest streams can depend heavily on the productivity of their stay-at-home counterparts, rainbow trout.

Biology - Ecology

Jan 31, 2011 5 / 5 (3) 0

With the number of salmon in the North Pacific having doubled in the past 50 years, scientists are increasingly concerned there may not be enough food to support them, and changing ocean conditions could make it even worse.

Biology - Ecology

Nov 28, 2010 not rated yet 1

We hear so much about missing wild salmon and recently a record run. But Simon Fraser University scientists say a population explosion of hatchery and wild salmon in the North Pacific Ocean is leading hatchery fish to beat ...

Biology - Ecology

Oct 04, 2010 5 / 5 (1) 0

Steelhead trout that are originally bred in hatcheries are so genetically impaired that, even if they survive and reproduce in the wild, their offspring will also be significantly less successful at reproducing, according ...

Biology - Ecology

Jun 10, 2009 5 / 5 (2) 1