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2009-09-09 11:42:15

Over a 23-year study, Javier Lob³n-Cerviá has found the mechanism that controls the number of salmonids found each year in Cantabrian rivers. His method has been to monitor population numbers in relation to river flow in March, when the juvenile fish emerge. He concludes that environmental conditions change each year and modify river flow, positively or negatively affecting survival rates. This information throws light on a long debate within ecological theory about the mechanisms...

2009-04-24 09:55:00

Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) have gained a key insight into a disease that is devastating the UK's fish farming industry. The researchers have discovered that fish can harbour and spread proliferative kidney disease (PKD), a cause of major stock losses on fish farms, as well as being affected by the infection.The discovery now paves the way for research to develop effective ways to combat the disease. The research was conducted by...

2009-03-27 11:27:55

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. Their findings appear in a current online issue of the journal Freshwater Biology where they describe experiments that examined some effects of fisheries management practices now in use in California mountain lakes where fish do not naturally occur. The research has value...

2009-03-23 12:00:00

TROUTVILLE, Va., March 23 /PRNewswire-USNewswire/ -- Roanoke Cement Company released 350 rainbow trout into a manmade quarry pond on their site late last Friday, in recognition of a new relationship with Trout Unlimited, a national organization dedicated to conserve, protect and restore North America's trout and salmon fisheries and their watersheds. Executive management, including Aris Papadopoulos, Chief Executive Officer of Titan America -- Roanoke cement's parent company -- was on-hand...

2008-12-05 09:41:26

Attempts to avoid dams decrease survival in adult fishScientists have discovered that management efforts intended to assist migrations of salmon and steelhead trout can have unintended consequences for fish populations. Juveniles that are transported downstream on boats can lose the ability to migrate back to their breeding grounds, reducing their survivorship and altering adaptations in the wild.Transportation programs have been in place for over three decades to improve the survival of fish...

2008-11-20 18:25:32

Most of California's native salmon, steelhead and trout species face extinction this century without quick action to provide proper habitats, a study found. Twenty of 31 species of prized fish are in sharp decline, including the Sacramento River winter run of Chinook salmon, coastal Coho salmon and the Sierra Nevada golden trout, the San Francisco Chronicle reported. Our fish need cold, clean water to survive, but they're getting less and less of it, said University of California, Davis,...

2008-10-15 18:20:00

A Swiss fisherman made an unusual catch in a tributary of the Rhine River near Basel -- the first wild salmon spotted so far up the Rhine in half a century. The Federal Environmental Office said the female fish was photographed and then released to the river, Swissinfo reported. Olivier Schmidt, an employee of the Natural History Museum in Basel, happened to be in the area when Thomas Wanner caught the salmon last week in the Birs. "We could hardly believe our eyes," Schmidt said. "A...

2008-10-09 18:00:19

By THE ASSOCIATED PRESS MAN - West Virginia's first inland salmon fishery has welcomed 28,000 rainbow trout to its production facility in Man. West Virginia Salmon and Trout President William R. Martin says thousands more trout and salmon fingerlings from a nearby hatchery in Mingo County will join this week's arrivals in Man in the coming weeks. The aquaculture company raises sustainable and environmentally friendly salmon. and trout using water-recirculating technology and mountain...

2008-10-09 09:00:26

By For the Deseret News The Utah Wildlife Board recently approved rules changes that should provide more fishing opportunities in Utah and protect fish populations in an effort to provide better fishing throughout the state. Starting Jan. 1, anglers can use up to six poles when fishing through the ice at Flaming Gorge Reservoir. A new trout limit will be in place at Scofield Reservoir, and a change in the slot limit at Panguitch Lake will allow anglers to keep more rainbow trout. Anglers...

2008-10-06 00:00:20

News in brief ENVIRONMENT The collapse of sea trout numbers in the British Isles has left scientists baffled as to the cause, with hauls in Scotland at a 50-year low. Last year, catches on the river Spey, the largest river on the Moray Firth system in north-east Scotland, fell by 52 per cent. This year numbers are expected to be even worse. On the river Dee take rates are 46 per cent down while the river Ness has seen catches slump 10-fold since the 1990s. In Wales, experts say the size of...


Latest Trout Reference Libraries

Brown Trout, Salmo trutta
2013-10-15 12:46:40

The Brown Trout (Salmo trutta) is originally a European species of salmonid fish. It includes both purely freshwater populations, referred to Salmo trutta morpha fario and S. trutta morpha lacustris, and anadromous forms referred to as the sea trout, S. trutta morpha trutta. The latter migrates to the oceans for the majority of its life and returns to freshwater only to spawn. The specific handle trutta comes from the Latin trutta, meaning, literally, “trout”. The lacustrine morph of...

Bull Trout, Salvelinus confluentus
2013-10-14 11:44:30

The Bull Trout (Salvelinus confluentus) is a char belonging to the family Salmonidae that is native to North America. Historically, this fish has been known as the “Dolly Varden”, but was reclassified as a separate species in the year 1980. This Bull Trout is listed as a threatened species under the U.S. Endangered Species Act. Like other species of char, the fins of the bull trout have white leading edges. The head and mouth are abnormally large for salmonids, giving it its name. They...

Australian Grayling, Prototroctes maraena
2012-05-22 10:19:18

The Australian Grayling (Prototroctes maraena) is a freshwater fish found in coastal rivers in Tasmania and southeastern Australia. This fish has often been called the Cucumber Mullet or Cucumber Herring due to its cucumber-like odor. This fish is streamlined with a vaguely trout-like shape. It is silver on the flanks and dusky olive on the back, overlain with a golden shine. It can live 2 to 3 years and reach a length of roughly 7.9 inches. It has rarely been recorded up to 5 years of age...

Lake Trout, Salvelinus namaycush
2009-02-16 20:21:04

The Lake Trout (Salvelinus namaycush) is a species of freshwater char that is found mainly in lakes of Canada, Alaska, and the northern United States. They have been introduced into many other parts of the world including Europe, South America and some parts of Asia. In Canada, about 25% of the Lake Trout population is found in Ontario. However, only 1% of Ontario's lakes contain trout. The Lake Trout has been known to hybridize with Brook Trout, but such hybrids are almost always...

Golden Trout, Oncorhynchus mykiss aguabonita
2009-01-17 20:32:05

The Golden Trout (Oncorhynchus mykiss aguabonita) is a subspecies of the Rainbow Trout (Oncorhynchus mykiss). It is also known by the name California Golden Trout and is native to Golden Trout Creek, Volcano Creek and the South Fork Kern River in California. It is most likely found at elevations 10,000 feet above sea level. This subspecies is also commonly placed with other subspecies of rainbow trout known as redband trout. The Golden Trout has flanks with a red, horizontal band along the...

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Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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