News tagged with hatchery fish
Hatchery fish may hurt efforts to sustain wild salmon runs
Jun 10, 2009 |
5 / 5 (1) |
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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 ...
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Researchers Use New Acoustic Tools to Study Marine Mammals and Fish
Dec 29, 2009 |
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(PhysOrg.com) -- Over the past decade, researchers have developed a variety of reliable real-time and archival instruments to study sounds made or heard by marine mammals and fish. These new sensors are now ...
Student sleuths using DNA reveal zoo of 95 species in NYC homes -- and new evidence of food fraud
Dec 28, 2009 |
4.9 / 5 (16) |
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Two New York City high school students exploring their homes using the latest high-tech DNA analysis techniques were astonished to discover a veritable zoo of 95 animal species surrounding them, in everything ...
Whiskers hold secrets of invasive minks
Dec 23, 2009 |
4.5 / 5 (2) |
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Details of the lifestyle of mink, which escaped from fur farms and now live wild in the UK, have been revealed through analysis of their whiskers. Research led by the University of Exeter reveals more about the diet of this ...
Hatchery-raised salmon too crowded
Dec 23, 2009 |
5 / 5 (1) |
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Every year, large amounts of hatchery-raised young salmonids are released into Swedish rivers and streams to compensate for losses in natural production. Butthese fish generally survive poorly in the wild. ...
Seeing how evolutionary mechanisms yield biological diversity
Dec 22, 2009 |
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An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Fish fatty acids don’t make you cleverer or happier
Dec 22, 2009 |
3.3 / 5 (3) |
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(PhysOrg.com) -- A diet rich in fish fatty acids has no effect on cognitive functions such as memory and concentration in the elderly. Nor does it affect their level of wellbeing. This is the conclusion drawn by Dutch researcher ...
Feds mull regulating drugs in water
Dec 22, 2009 |
3 / 5 (2) |
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(AP) -- Federal regulators under President Barack Obama have sharply shifted course on long-standing policy toward pharmaceutical residues in the nation's drinking water, taking a critical first step toward regulating some ...
New study finds catch shares improve consistency, not health, of fisheries
Dec 22, 2009 |
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Catch share programs result in more consistent and predictable fisheries but do not necessarily improve ecological conditions, according to a new study published online this week by the journal Proceedings of the National ...
Modern behavior of early humans found half-million years earlier than previously thought
Other Sciences / Archaeology & Fossils
Dec 22, 2009 |
4.6 / 5 (16) |
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Evidence of sophisticated, human behavior has been discovered by Hebrew University of Jerusalem researchers as early as 750,000 years ago - some half a million years earlier than has previously been estimated ...
EPA, Army Corps urged to consider separating Great Lakes, river basin
Dec 21, 2009 |
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The once-radical idea of somehow plugging the Chicago Sanitary and Ship Canal to stop the flow of unwanted species from spilling between the Great Lakes and Mississippi River basin is quickly picking up political support.
List of search results for hatchery fish
