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Latest Hatchery Stories

2014-06-04 15:19:56

Oregon State University Exposure to iron pipes and steel rebar, such as the materials found in most hatcheries, affects the navigation ability of young steelhead trout by altering the important magnetic "map sense" they need for migration, according to new research from Oregon State University. The exposure to iron and steel distorts the magnetic field around the fish, affecting their ability to navigate, said Nathan Putman, who led the study while working as a postdoctoral researcher...

Wimpy Fish Call Into Question Conservation Value Of Hatcheries
2014-03-11 09:23:13

Washington State University Washington State University researchers have documented dramatic differences in the swimming ability of domesticated trout and their wilder relatives. The study calls into question the ability of hatcheries to mitigate more than a century of disturbances to wild fish populations. Kristy Bellinger, who did the study for her work on a Ph.D. in zoology, said traditional hatcheries commonly breed for large fish at the cost of the speed they need to escape...

Aquatic Playground Can Turn Water Tanks Into A School For Fish
2013-07-31 08:25:22

Penn State Raising fish in tanks that contain hiding places and other obstacles can make the fish both smarter and improve their chances of survival when they are released into the wild, according to an international team of researchers. "It's a key problem in that we are very good at rearing fish, but we're really not very good at releasing those animals in the wild such that they survive," said Victoria Braithwaite, professor of fisheries and biology, Penn State. "There's a mismatch...

Ocean Acidification Linked With Larval Oyster Failure in Hatcheries
2012-04-13 03:43:11

Increase in ocean acidification led to collapse of oyster seed production at Oregon hatchery Marine researchers have definitively linked the collapse of oyster seed production at a commercial oyster hatchery in Oregon to an increase in ocean acidification. Larval growth at the hatchery declined to a level considered by the owners to be "non-economically viable." A study by the scientists found that increased seawater carbon dioxide (CO2) levels, resulting in more corrosive ocean...

2012-02-09 11:20:28

Study finds most Chinook salmon spawning in Mokelumne River were hatchery raised 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 the wild is masking the fact that too few wild fish are returning to sustain a natural population in the river. The study, published in the online journal PLoS ONE, highlights the danger...

Hatcheries Change Salmon Genetics After A Single Generation
2011-12-20 10:28:33

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 a wild environment. These findings, published this week in Proceedings of the National Academy of Sciences, show a speed of evolution and natural selection that surprised researchers. They confirmed that a primary impact of hatcheries is a change in fish genetics, as...

2011-02-25 12:41:00

SACRAMENTO, Calif., Feb. 25, 2011 /PRNewswire/ -- Today, the California Association for Recreational Fishing (CARF) announced its opposition to new regulations being unveiled at the March 3rd California Fish and Game Commission hearing being held in Los Angeles. For the first time in over 30 years, new regulations will require fishermen to purchase fishing licenses to catch privately stocked fish on private property as well as private fee for fishing lakes. In addition, these new...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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