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Tag: "trout" at biology news

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. Z...

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 ...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

... 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 ...

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 ph...

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...

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...

'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...

Twenty 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, hea...

Hearts of male and female rainbow trout are different

...alth 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 ...

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