http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Biologists determined that short-term, seasonal exposure to pesticides in rivers and basins may limit the growth and size of wild salmon populations. In addition to the widespread deterioration of salmon habitats, these findings suggest that exposure to commonly used pesticides may further inhibit the recovery of threatened or endangered populations. http://www.physorg.com/news180182664.html Biology Wed, 16 Dec 2009 10:45:54 EST news180182664 We don't always turn out like our parents. Sometimes we become even better. How this happens is the subject of a new research project at the University of Gothenburg. http://www.physorg.com/news179498500.html Biology Tue, 08 Dec 2009 13:00:01 EST news179498500 Popular thinking about how to improve food systems for the better often misses the point, according to the results of a three-year global study of salmon production systems. Rather than pushing for organic or land-based production, or worrying about simple metrics such as "food miles," the study finds that the world can achieve greater environmental benefits by focusing on improvements to key aspects of production and distribution. http://www.physorg.com/news178297283.html Space & Earth Tue, 24 Nov 2009 15:16:35 EST news178297283 (PhysOrg.com) -- Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened juvenile salmon and allow them to grow larger before reaching the Pacific Ocean. http://www.physorg.com/news172423924.html Biology Sun, 15 Nov 2009 07:45:57 EST news172423924 (AP) -- Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River. http://www.physorg.com/news176809835.html Biology Sat, 07 Nov 2009 09:51:08 EST news176809835 It appears that eating more fish has no effect on the health of the large intestine. Neither was there any difference between eating salmon and cod. In other words, there are no additional indications that fish consumption can help to lower the risk of developing cancer of the large intestine; whereas previous research did seem to indicate this. http://www.physorg.com/news174242066.html Medicine & Health Thu, 08 Oct 2009 17:35:02 EST news174242066 Wild salmon and farmed salmon can now be distinguished from each other by a technique that examines the chemistry of their scales. http://www.physorg.com/news173532203.html Chemistry Wed, 30 Sep 2009 12:50:02 EST news173532203 (PhysOrg.com) -- In a feat of reverse-engineering, Christian Braudrick of University of California at Berkeley and three coauthors have successfully built and maintained a scale model of a living meandering gravel-bed river in the lab. Their findings point to the importance of vegetation to reinforce the banks and, surprisingly, to the importance of sand in healthy meandering river life. http://www.physorg.com/news173451139.html Space & Earth Tue, 29 Sep 2009 13:52:51 EST news173451139 In a case closely followed by environmental and business interests, a rewritten plan for restoring endangered and threatened wild salmon runs on the Columbia and Snake rivers in Washington state and Idaho includes studying the possibility of breaching four major hydroelectric dams if other steps don't reverse the decline. http://www.physorg.com/news172257798.html Biology Wed, 16 Sep 2009 00:00:01 EST news172257798 A team of Michigan State University researchers has developed a new, more efficient way of cloning zebra fish, a breakthrough that could have implications for human health research. http://www.physorg.com/news170862315.html Biology Sun, 30 Aug 2009 14:46:16 EST news170862315 Physicists at the University of Rochester have combed through data from satellites and ocean buoys and found evidence that in the last 50 years, the net flow of heat into and out of the oceans has changed direction three times. http://www.physorg.com/news169472486.html Physics Fri, 14 Aug 2009 12:42:06 EST news169472486 The same things that make Alaska's marine waters among the most productive in the world may also make them the most vulnerable to ocean acidification. According to new findings by a University of Alaska Fairbanks scientist, Alaska's oceans are becoming increasingly acidic, which could damage Alaska's king crab and salmon fisheries. http://www.physorg.com/news169398301.html Space & Earth Thu, 13 Aug 2009 16:20:06 EST news169398301 (AP) -- Yukon River smokehouses should be filled this summer with oil-rich strips of king salmon - long used by Alaska Natives as a high-energy food to get through the long Alaska winters. But they're mostly empty. http://www.physorg.com/news168442502.html Biology Sun, 02 Aug 2009 14:50:01 EST news168442502 The water mould Saprolegnia can cause skin disease in salmon during its freshwater phase. The mould attacks both fish and eggs and has at times caused great economic loss for the fish farming industry, both in Norway and in other salmon-producing countries. Saprolegnia infection may be seen with the naked eye as white patches on the skin or as "cotton-like" patches on eggs. http://www.physorg.com/news167480774.html Biology Wed, 22 Jul 2009 11:40:01 EST news167480774 A plan to restore salmon runs on California's Sacramento River also could help revive killer whale populations 700 miles to the north in Puget Sound, as federal scientists struggle to protect endangered species in a complex ecosystem that stretches along the Pacific coast from California to Alaska. http://www.physorg.com/news166022139.html Biology Sun, 05 Jul 2009 14:16:25 EST news166022139 Stocks of the UK`s Atlantic salmon along with varieties of domestic Brown trout could be under threat from a deadly parasite according to research led Bournemouth University (BU) published in the International Journal of Parasitology. http://www.physorg.com/news164454593.html Biology Wed, 17 Jun 2009 11:30:12 EST news164454593 (AP) -- Federal fisheries regulators on Thursday released a court-ordered plan to help struggling chinook salmon that includes opening California dams and restricting pumping, which would reduce the amount of water available to farms and urban areas. http://www.physorg.com/news163360026.html Space & Earth Thu, 04 Jun 2009 18:47:37 EST news163360026 The Pacific Northwest has spent two decades retooling dams, rebuilding damaged watersheds and restoring stream flows to keep salmon from disappearing. http://www.physorg.com/news161366583.html Biology Tue, 12 May 2009 17:03:27 EST news161366583 (AP) -- California's commercial chinook salmon fishing season will be called off again after a record low number of fish returned to spawn last year, federal fisheries managers announced Wednesday. http://www.physorg.com/news158479379.html Space & Earth Thu, 09 Apr 2009 07:03:38 EST news158479379 The Nature Conservancy has bought ranchland near Mount Shasta to repair a cow-ravaged tributary of Shasta River, historically one of the most productive salmon streams in California. http://www.physorg.com/news156535102.html Space & Earth Tue, 17 Mar 2009 18:59:25 EST news156535102 During his doctoral thesis, Erlend Haugarvoll discovered new aspects of the salmon immune system. His research looked at the immune cells in the gills of salmon and at immune responses to vaccination. A special type of tissue, rich in immune cells, was found in the gills, and new properties of immune cells that produce brown pigment were discovered. http://www.physorg.com/news152281309.html Biology Tue, 27 Jan 2009 12:22:18 EST news152281309 Although most people imagine wolves chasing deer and other hoofed animals, new research suggests that, when they can, wolves actually prefer fishing to hunting. The study, published today in the open access journal BMC Ecology, shows that when salmon is available, wolves will reduce deer hunting activity and instead focus on seafood. http://www.physorg.com/news139571611.html Biology Tue, 02 Sep 2008 10:53:31 EST news139571611 For years scientists have struggled to understand the decline and slow recovery of Atlantic salmon, a once abundant and highly prized game and food fish native to New England rivers. Biologists agree that poor marine survival is affecting salmon in the U.S. and Canada, but specific causes are difficult to determine in the ocean. Small acoustic tags and associated technology may provide some answers. http://www.physorg.com/news138295764.html Biology Mon, 18 Aug 2008 16:29:24 EST news138295764