News tagged with freshwater fish
Evidence of ancient lake in California's Eel River emerges
A catastrophic landslide 22,500 years ago dammed the upper reaches of northern California's Eel River, forming a 30-mile-long lake, which has since disappeared, and leaving a living legacy found today in the ...
Space & Earth / Earth Sciences
Nov 14, 2011 |
5 / 5 (3) |
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Why are there so few fish in the Earth's oceans?
(PhysOrg.com) -- A Stony Brook University researcher has found that, contrary to popular belief, there are not plenty of fish in the sea.
Feb 08, 2012 |
4.3 / 5 (22) |
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Researchers map fish species at risk from dams
Dams are believed to be one of the biggest threats to freshwater organisms worldwide: They disrupt normal patterns of water and sediment flow, impede migration, and alter the character of spawning and feeding grounds. A shortage ...
May 10, 2012 |
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Ancient cooking pots reveal gradual transition to agriculture
Humans may have undergone a gradual rather than an abrupt transition from fishing, hunting and gathering to farming, according to a new study of ancient pottery.
Other Sciences / Archaeology & Fossils
Oct 24, 2011 |
4.8 / 5 (4) |
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Females choose sexier friends to avoid harassment
(PhysOrg.com) -- Scientists have observed a strategy for females to avoid unwanted male attention: choosing more attractive friends. Published today (7 December) in the journal Proceedings of the Royal So ...
Dec 07, 2011 |
3.8 / 5 (5) |
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Molecular study shows unexpected effects of toxin
Scientists from the University of Birmingham studying the effects of the widely-used pesticide fenitrothion, have discovered unexpected cell damage in a common freshwater fish, roach, exposed to the toxin.
Aug 08, 2011 |
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Deadly fish virus now found in all Great Lakes
(PhysOrg.com) -- A deadly fish virus - viral hemorrhagic septicemia virus - first discovered in the Northeast in 2005, has been found for the first time in Lake Superior. The virus is now in all of the Great ...
Jan 27, 2010 |
4.3 / 5 (4) |
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Tongue makes the difference in how fish and mammals chew
Evolution has made its mark --- large and small -- in innumerable patterns of life. New research from Brown University shows chewing has evolved too.
Jun 27, 2011 |
5 / 5 (3) |
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Threats to freshwater mussels and the consequences for ecosystems
At the University of Oklahoma's Aquatic Research Facility in Norman, zoologist Caryn Vaughn shows off freshwater mussels that she's recently collected from rivers in the southeastern part of the state. One river alone may ...
Mar 13, 2012 |
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Competition may have led to new dinosaur species in Grande Prairie area
(PhysOrg.com) -- The discovery of a gruesome feeding frenzy that played out 73 million years ago in northwestern Alberta may also lead to the discovery of new dinosaur species in northwestern Alberta.
Other Sciences / Archaeology & Fossils
May 12, 2009 |
4.4 / 5 (8) |
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Teeny teeth indicate ancient shark nurseries
Fuelled by Hollywood and its vision of Jaws, sharks conjure images of fearsome predators patrolling our seas in search of their next unfortunate victim. It is therefore hard to imagine sharks as relatively ...
Other Sciences / Archaeology & Fossils
Sep 13, 2011 |
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Quagga mussels are clogging Hoover Dam, colonizing lakes and rivers
It took some of America's best engineers, thousands of laborers and two years of around-the-clock concrete pouring to build the 726-foot-high Hoover Dam back in the 1930s. It took less time than that for the tiny, brainless ...
Mar 02, 2009 |
2.7 / 5 (3) |
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WWF calls for action to save Mekong dolphins
Conservation group WWF on Wednesday called for urgent action to prevent the extinction of freshwater dolphins in the Mekong River, including the creation of special conservation zones.
Aug 17, 2011 |
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Researchers study threats to white sturgeon
University of Georgia researchers are working to understand why the nation's largest freshwater fish, the white sturgeon, is struggling in northern California's Sacramento-San Joaquin Bay Delta, an environmentally endangered ...
Aug 08, 2011 |
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Route parasite takes to infect fish uncovered
(PhysOrg.com) -- Scientists in Aberdeen have made a discovery which could ultimately help to develop a control for a major cause of infection in farmed fish.
Jan 25, 2012 |
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