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 and reproduce in ...
Evolution
Dec 19, 2011
100
0
Endangered Southern Resident killer whales prey on a diversity of Chinook and other salmon. The stocks come from an enormous geographic range as far north as Alaska and as far south as California's Central Valley, a new analysis ...
Ecology
Mar 3, 2021
0
375
Four decades of conservation spending totaling more than $9 billion in inflation-adjusted tax dollars has failed to improve stocks of wild salmon and steelhead in the Columbia River Basin, according to Oregon State University ...
Ecology
Jul 28, 2023
5
219
Hatchery-raised steelhead trout have offspring that are good at gaining size under hatchery conditions but don't survive as well in streams as steelhead whose parents are wild fish, new research by Oregon State University ...
Evolution
Jan 17, 2022
0
283
For the first time researchers studying a deadly virus modeled how it spreads to young trout and salmon in the waters of the Columbia River Basin, showing that migrating adult fish are the main source of exposure.
Ecology
Apr 20, 2018
0
9
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 mounting evidence ...
Ecology
May 14, 2012
0
0
A new study on steelhead trout in Oregon offers genetic evidence that wild and hatchery fish are different at the DNA level, and that they can become different with surprising speed.
Ecology
Feb 17, 2016
1
301
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.
Ecology
Nov 28, 2010
1
0
Peering into the microscope, Alan Barton thought the baby oysters looked normal, except for one thing: They were dead.
Environment
Oct 12, 2012
5
0
With chronic drought drying up rivers earlier than usual this year, California is scaling up a drastic operation to help its famous Chinook salmon reach the Pacific—transporting the fry by road in dozens of large tanker ...
Ecology
Jun 6, 2021
1
9
