Tag: "trout" at biology news
Loss of hemlocks will affect water dynamics in southern Appalachian forests
...s maintain the cool water temperatures required by trout
and other aquatic organisms in mountain streams. No other native evergreen in the southern Appalachians will likely fill the ecohydrological role of eastern hemlock if widespread mortality occurs, says Ford, ecologist with the Otto, NC unit where...
Nemo comes home with a tag
...oring the possibility of applying the tag to coral trout
a candidate for better management in waters where...essful the team hopes to conduct trials with coral trout
off Great Keppel Island on the Great Barrier. Similar studies are planned for coral trout
in PNG and...
Hearts of male and female rainbow trout are different
...lth and swimming activity. Previous studies of trout
cardiac performance and energy metabolism have bee...ccur at a young age and are only realized when the trout
heart is contracting and not under resting conditions. The study is entitled Sex Differences in C...
Study projects effects of forest management in Oregon's Coast Range
...n private lands; habitat conditions for salmon and trout
in the Coast Range are more likely to improve on public lands than on private. Recent biodiversity policies have been developed in a largely uncoordinated manner, leading to less-than efficient production of some forest values, such as timber and fi...
Fishing for alternatives
...e the effects of toxins on fish such as freshwater trout
and carp in a move to cut down the number of experiments carried out on live fish. Fish Biologists will be presenting new culture methods to help replace the use of live fish for safety testing of chemicals when they meet in Glasgow for the Annual Ma...
20 of world's 162 grouper species threatened with extinction
...e threatened groupers include two species of coral trout
grouper, which are mainstays of the live reef food fish trade in Hong Kong. Both can be found in Hong Kong fish markets, but they face heavy and unmanaged fishing pressure that is rapidly reducing their populations. In North and South America, heav...
Special ES&T issue examines effects of emerging contaminants on people, planet
...l/es0609708.html PBDEs accumulate in Great Lake trout
at extraordinary rate PBDE ( polybrominated diph...rchers concluded certain PBDE levels found in lake trout
were 10 million times higher than in the surrounding water. Swackhamer estimates that a person eatin...
Rising temperatures will lead to loss of trout habitat in the southern Appalachians
...projects that between 53 and 97 percent of natural trout
populations in the Southern Appalachians could dis... Research Station unit in Blacksburg, VA, maps out trout
habitat in a future, warmer climate. The three species of trout
that live in the Southern Appalach...
'Killer' B cells demonstrate evolutionary link between fish and mammal immune systems
...tivity while examining the immune cells of rainbow trout
and catfish. The researchers determined that these attack B cells account for more than 30-40% of all immune cells in fish, while phagocytic cells only make up a small portion of the total number of immune cells in mammals. Further research also sh...
Cornell researchers find serious fish virus in Northeast for first time
... of the most serious disease of freshwater rainbow trout
in Europe," said Paul Bowser, Cornell professor of aquatic animal medicine, noting that the virus does not currently pose as great a threat in North America. "Right now, it's a matter of trying to collect as much information and as fast as possible s...
New groundbreaking findings in taste, smell and chemical irritation
...istible scent of bile summons migrating salmon and trout
home -- Although born in streams, salmon spend most of their lives in the open ocean feeding before returning to their birth-streams to reproduce. While it's been known for decades that salmon recognize home-streams using their sense of smell, the i...
For some young fish, early gene expression is a clear harbinger of fated lifestyle
... Denmark, and the UK. Salmonid fish, which include trout
and whitefish as well as salmon, show exceptional ...rent levels. At the same time, two sedentary brown trout
populations from Denmark and France, despite having diverged half a million years ago, showed very s...
How to grow a bigger brain
Hatchery-reared steelhead trout
show increased growth of some parts of the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon reared in the wild, and t...
Ancient DNA helps UF researchers unearth potential hemophilia therapy
...97, it had remained hidden in the DNA of fish like trout
for 15 million years. Years of mutations in the genetic code had buried the transposon, silencing its ability to issue molecular marching orders. Fletcher and researchers Li Liu, M.D., Ph.D., an adjunct postdoctoral associate in the department of pha...
Valuing biodiversity services, including its insurance against disease
...virus reduces the death rate in shrimp and rainbow trout
when subsequently infected by a more deadly virus. Meanwhile, in an experiment in China, farmers who planted a sacrificial row of rice susceptible to a disease every four to six rows were able to control "rice blast" disease in the rest of the crop ...
Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified
... which laid waste to Great Lakes fisheries of lake trout
and other species in the mid-20th century. Now, a ... have been commercially valuable species like lake trout
and whitefish. Currently, the Great Lakes Fishery Commission (GLFC) controls lamprey by means of a p...
Zebrafish may hold key to improved cancer research
...es, and the university first developed the rainbow trout
as a useful model for cancer research. Those studies, among others, helped to determine that aflatoxin contaminants which can be found in some foods are a powerful carcinogen and are still a major cause of liver cancer in some developing nations. Ze...
What have scientists learned since Mount St. Helens erupted?
...a. For instance, some Pacific salmon and steelhead trout
were at sea when the eruption occurred. When they returned to Mount St. Helens to spawn in the years after the eruption, stream conditions had improved. Many migrant songbirds were still on their winter grounds in Mexico and Central America when the ...
Study in Royal Society journal on possible genetic factors in social responsiblity
...markably shows that the same genes are deployed in trout
at equivalent stages of tooth development. We conclude that the genes needed to build a dentition are conserved from fish to mouse and notably are repetitively used for all generations of teeth, from the mouth margins to rear gill arches. Thus a mole...
Study: Pigeons can sense the Earth's magnetic field; ability might allow them to return home
... They also have been found in the noses of rainbow trout
and have been linked to those fishes' ability to sense magnetic fields, she said. "For about 30 years, researchers supporting the olfactory hypothesis of pigeon homing have argued that pigeons smell their way home because procedures that im...