Navigation Links
Salmon smolt survival similar in Columbia and Fraser rivers
Date:10/28/2008

n the impacts of stress on fish, last year received the Meritorious Presidential Rank Award at a White House ceremony for his contributions to fisheries science. His work during the past 36 years has centered on the causes of stress in juvenile and adult salmon and steelhead, and the impacts that stress can have.

During the past dozen or so years, OSU scientists have been using telemetry to study survival rates of juvenile salmon below Bonneville Dam. They discovered a high rate of mortality in the estuaries, which led to the surprising discovery of the impact of predation from colonies of terns. In 2000, OSU introduced the use of a new tool acoustic telemetry for studying salmon on the West Coast. Acoustic telemetry allows the signals emitted from tagged fish to be picked up by underwater hydrophones in salt water, as well as fresh.

A team led by David Welch, a British Columbia scientist and lead author of the PLoS paper, subsequently established a series of listening stations along the continental shelf, and also began using the same acoustic technology used by OSU researchers to study the survival of smolts in the Fraser River.

Comparing smolt survival from one river system to another is complex, because there can be a huge difference in the overall "quality" of smolts even before they begin their long journey to the Pacific Ocean, according to Shaun Clements, a biologist with the Oregon Department of Fish and Wildlife and co-author of the study, who conducted some of the tagging studies.

Clements, a former senior research associate at OSU, said the health and fitness of the smolts that are captured at the Columbia River's Lower Granite dam varies significantly.

"One day, we'd get a group of fish that were released from one hatchery and they'd be relatively weak, then a few days later we'd get a bunch of fish from a different hatchery and they would be robust," Clements said. "Hatcheries weren't the only variable s
'/>"/>

Contact: Carl Schreck
carl.schreck@oregonstate.edu
541-737-1961
Oregon State University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Scientists achieve first tracking of salmon from headwaters in Rockies through Pacific to Alaska
2. Research challenges conventional notions about salmon survival
3. Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions
4. Wolves would rather eat salmon
5. ETH Zurich study on salmonella self-destruction
6. Signals from the Atlantic salmon highway
7. Sesame seed extract and konjac gum may help ward off Salmonella and E. coli
8. From foe to friend: Researchers use salmonella as a way to administer vaccines in the body
9. Fruit flies show how salmonella escapes immune defenses
10. Hatchery fish outnumber wild chinook salmon in troubled fall run
11. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2014)... Mass-- Conventional wisdom has long held that corals ... coral reefs are passive organisms that rely ... such as nutrients and oxygen. But now scientists ... (WIS) in Israel have found that they are ... water into turbulent patterns that greatly enhance their ...
(Date:9/1/2014)... About 50 years ago, electron microscopy revealed the presence ... around and disappear. But scientists still don,t know what ... of proteins are believed to be crucial to the ... new approach to disease treatment., In the Journal ... call to investigators from various backgrounds, from biophysics to ...
(Date:8/31/2014)... A new blood test provides a fast and ... new proof-of-concept study shows. The newly developed test ... to detect active tuberculosis in children. The test ... tests in combination with speed of a blood ... for the diagnosis of tuberculosis in children, particularly ...
Breaking Biology News(10 mins):Nature's tiny engineers 2Nature's tiny engineers 3Scientists call for investigation of mysterious cloud-like collections in cells 2New tuberculosis blood test in children is reliable and highly specific 2
... German . , EASY-HIT** is a new cell-based ... This system was developed under the leadership of Professor Ruth ... the system are cultured human cells that allow HIV to ... producing a red fluorescent protein. The EASY-HIT technology can be ...
... Colo. (December 1, 2010) A major new study ... fetus to those smells and flavors, but physically changes the ... the future. "This highlights the importance of eating ... and nursing," said Josephine Todrank, PhD, who conducted the two-year ...
... from the UC Davis Health System have found that ... are significantly reduced in patients in the Sacramento area ... that affects about one in three U.S. adults and ... The study is the first to examine vitamin-D ...
Cached Biology News:A powerful new technology to identify HIV inhibitors 2Study shows pregnant mother's diet impacts infant's sense of smell 2Study finds low vitamin-d levels in northern California residents with metabolic syndrome 2Study finds low vitamin-d levels in northern California residents with metabolic syndrome 3Study finds low vitamin-d levels in northern California residents with metabolic syndrome 4
(Date:8/28/2014)... BOSTON , Aug. 28, 2014  Next month, executives ... at three key industry events beginning with Patient-Centered Clinical ... Hotel in Boston , September 4-5. Patient ... , and Aaron Fleishman will share insights on ... how a variety of tactics – from media to mobile ...
(Date:8/28/2014)... Kent, WA (PRWEB) August 28, 2014 ... Synder Filtration’s polymeric membranes to its stable of ... of available molecular weight cut-offs and include membrane filters ... a steady increase in customer demand for our membrane ... a greater variety of flat sheet membranes,” explains Sterlitech ...
(Date:8/28/2014)... new work by a Florida State University research team ... take your temperature, emit white light, and convert photon ... looks like a butterfly. , Biwu Ma, associate professor ... the FAMU-FSU College of Engineering, created the molecule in ... to discover that his creation has many other unique ...
(Date:8/28/2014)... A new market research report detailing ... from Strategic Consulting, Inc., the leading information resource ... Review, Fourth Edition: Global Review of Microbiology Testing ... compares microbiology test volumes, market values and methods ... and forecasts future volumes and market values through ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3
... Consistent,Electronic Health Record for All Citizens Using City ... GREAT RIVER, N.Y., Oct. 16 Netsmart Technologies, ... for health and,human services organizations, today announced it ... contract by the City and County of San,Francisco, ...
... access to advanced gene-sequencing,technologies and gives new hope ... 16 Swedish Neuroscience,Institute (SNI) today announced that ... Hill Campus, the Center for Advanced Brain Tumor,Treatment ... patients diagnosed,with both benign and malignant brain tumors. ...
... Phase 3 CAPACITY Program - ... rate in CAPACITY -, BRISBANE, Calif., Oct. 16 ... 16, 2008, the Japanese,Ministry of Health, Labor and Welfare (MHLW) ... Ltd. to market pirfenidone,for the treatment of patients with idiopathic ...
Cached Biology Technology:Netsmart Technologies Selected by City and County of San Francisco to Provide Integrated Behavioral Healthcare Software System 2Netsmart Technologies Selected by City and County of San Francisco to Provide Integrated Behavioral Healthcare Software System 3Swedish in Seattle Unveils State-of-the-Art Brain Tumor Center Combining Advanced Treatment With Innovation in Research 2Swedish in Seattle Unveils State-of-the-Art Brain Tumor Center Combining Advanced Treatment With Innovation in Research 3Swedish in Seattle Unveils State-of-the-Art Brain Tumor Center Combining Advanced Treatment With Innovation in Research 4InterMune Reports Japanese Regulatory Approval of Pirfenidone in IPF 2InterMune Reports Japanese Regulatory Approval of Pirfenidone in IPF 3InterMune Reports Japanese Regulatory Approval of Pirfenidone in IPF 4
... cells for DNA isolation. Designed ... (includes 96 well plate adapters from ... the entire plate length (max capacity ... be used for soil, microorganisms, animal ...
Phospho- (Ser) 14-3-3 Binding Motif (4E2) Mouse mAb...
Rat polyclonal to acetyl Salicylic Acid ( Abpromise for all tested applications)....
Drugs and NO-drug Rat Anti-conjugated Acetyl Salicylic Acid Polyclonal Antibody...
Biology Products: