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Rising temperatures will lead to loss of trout habitat in the southern Appalachians
USDA Forest Service (FS) research projects that between 53 and 97 percent of natural trout populations in the Southern Appalachians could disappear due to the warmer temperatures predicted under two different global climate circulation models. view more (2006-10-05)
MSU researchers recommend ways to fight lake trout invasion in Glacier National Park
Natural barriers like waterfalls play an important role in preventing lake trout from spreading through Glacier National Park, so maintaining those barriers should be a priority, Montana State University researchers said after conducting a four-year study in the park. view more (2008-04-25)
Fish slime crock of gold at end of rainbow
The slippery mucus on the skin of rainbow trout is being studied by scientists as a possible source of new medicines to fight infectious diseases, according to research presented today (Monday, 06 September 2004) at the Society for General Microbiology's 155th Meeting at Trinity College Dublin. view more (2004-08-23)
Study assesses impact of fish stocking on aquatic insects
The impact fish stocking has on aquatic insects in mountain lakes can be rapidly reversed by removing non-native trout, according to a study completed by U.S. Forest Service and University of California, Davis, scientists. view more (2009-03-27)
For some young fish, early gene expression is a clear harbinger of fated lifestyle
As juveniles, individuals of many fish species face a developmental choice that will profoundly affect their future: whether to adopt a sedentary or migratory lifestyle. view more (2006-04-18)
New study shows greenback cutthroat trout involved in recovery effort misidentified
A new study led by the University of Colorado at Boulder indicates biologists trying to save Colorado's native greenback cutthroat trout from extinction over the past several decades through hatchery propagation and restocking efforts have, in most cases, inadvertently restored the wrong fish. view more (2007-09-06)
Restoring fish populations leads to tough choice for Great Lakes Gulls
You might think that stocking the Great Lakes with things like trout and salmon would be good for the herring gull. The birds often eat from the water, so it would be natural to assume that more fish would mean better dining. view more (2008-05-15)
River flow and temperature limit trout numbers
Over a 23-year study, Javier Lobon-Cervia has found the mechanism that controls the number of salmonids found each year in Cantabrian rivers. view more (2009-09-10)
Hearts of male and female rainbow trout are different
The heart is one of the most energy demanding organs of the human body. Its failure to function properly accounts for 600,000 deaths each year. Similarly, the rainbow trout, native to the Pacific Northwest and beloved as a sport- and food fish, requires dynamic and sustained cardiac function to maintain its health and swimming activity. view more (2007-04-30)
Improved method developed to test carcinogen risk
Researchers at Oregon State University recently completed the largest animal study ever done in the field of toxicology, and the findings challenge some basic concepts about how to determine what level of a cancer-causing compound can be considered safe. view more (2009-06-19)
Stress relief for bullies
At last! An excuse for those of us who take our work-related stress out on our family. Dr. Øyvind Øverli of the University of Oslo has discovered that dominant rainbow trout reduce their stress levels by venting their frustration on socially subordinate animals. Presenting his results at the annual SEB meeting in Edinburgh (29th March - 2nd... view more... (2004-03-24)
Hatchery fish may hurt efforts to sustain wild salmon runs
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. view more (2009-06-10)
Canada's pristine freshwater fisheries at risk
If you want to catch a trophy northern pike, walleye or brook trout in the northern Canadian wilderness, better plan your trip soon. That's because according to a report released today by the Wildlife Conservation Society, looming development, including forestry, mining and dam construction, threatens this pristine region of untouched forests,... view more... (2007-09-20)
Digital cameras, remote satellites measure crop water demand
Horticultural crops account for almost 50% of crop sales in the United States, and these crops are carefully managed to ensure good quality. view more (2008-07-21)
Climate change effects on imperiled Sierra frog examined
Climate change can have significant impacts on high-elevation lakes and imperiled Sierra Nevada Yellow-legged frogs that depend upon them, according to U.S. Forest Service and University of California, Berkeley, scientists. view more (2008-12-11)
MIT: Extending the shelf life of antibody drugs
A new computer model developed at MIT can help solve a problem that has plagued drug companies trying to develop promising new treatments made of antibodies: Such drugs have a relatively short shelf life because they tend to clump together, rendering them ineffective. view more (2009-06-30)
Salmonid hatcheries cause 'stunning' loss of reproduction
The rearing of steelhead trout in hatcheries causes a dramatic and unexpectedly fast drop in their ability to reproduce in the wild, a new Oregon State University study shows, and raises serious questions about the wisdom of historic hatchery practices. view more (2007-10-05)
Sick fish may get sicker
Entire populations of North American fish already are being affected by several emerging diseases, a problem that threatens to increase in the future with climate change and other stresses on aquatic ecosystems, according to a noted U.S. Geological Survey researcher giving an invited talk on this subject today at the Wildlife Disease Association... view more... (2009-08-04)
Silent Streams? Escalating Endangerment for North American Freshwater Fish: Nearly 40 Percent Now At-Risk
Nearly 40 percent of fish species in North American streams, rivers and lakes are now in jeopardy, according to the most detailed evaluation of the conservation status of freshwater fishes in the last 20 years. view more (2008-09-10)
Revolutionary technology bringing fish to the desert
The world-first project will help to provide people living in barren regions with a vital source of protein and a valuable, if unlikely, cash crop. The intensive fish-growing system being developed can be set up anywhere in the world. Environmental geochemist Michael Krom is co-ordinating the £600,000 international project, which aims to... view more... (1999-02-12)
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