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:7/28/2014)... map social connections in prairie dogs have uncovered ... on prairie dog communities that may help limit ... conservation efforts. The work was done by researchers ... Evolutionary Synthesis Center (NESCent). , "Prairie dogs are ... says Dr. Jennifer Verdolin, lead author of a ...
(Date:7/27/2014)... a new species of mayfly in the southern Western Ghats, ... fact, this is the first time that any mayfly belonging ... peninsular India. , The new species, called Labiobaetis soldani ... his substantial contribution to the understanding of the Ephemeroptera of ... study that describes the new mayfly in the Journal ...
(Date:7/27/2014)... scientists have identified more than two dozen genetic ... that had not been previously reported. The study, ... funded by the National Institutes of Health (NIH) ... , "Unraveling the genetic underpinnings of Parkinson,s is ... this complex disease, and hopefully, may one day ...
Breaking Biology News(10 mins):Social network research may boost prairie dog conservation efforts 2NIH scientists find 6 new genetic risk factors for Parkinson's 2
... research team have, for the first time, demonstrated that mercury ... of the chemical. The international teams research began ... is featured in this weeks Proceedings of the National Academy ... been difficult to establish because of all the other factors ...
... levels in lake fish, according to a three-year study ... Academy of Science. The study showed that an increase ... resulted in a significant increase in methylmercury production and ... This is good news. It means that a reduction ...
... The NASA-managed Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument ... took its first measurements of ocean color. A ... in countless applications and helped researchers paint a ... satellite,s tenth anniversary today with briefings at the ...
Cached Biology News:International team shows mercury concentrations in fish respond quickly to increased deposition 2New study shows fish respond quickly to changes in mercury deposition 2New study shows fish respond quickly to changes in mercury deposition 3NASA celebrates a decade observing climate impacts on health of world's oceans 2NASA celebrates a decade observing climate impacts on health of world's oceans 3
(Date:7/28/2014)... DC (PRWEB) July 28, 2014 It’s a ... GI Bill benefits to further their post-secondary education are failing ... a study released this year. And according to an analysis ... this shortfall is veteran students’ uninformed choice of college majors, ... The details of the study: Some 51.7 percent of post-9/11 ...
(Date:7/28/2014)... 28, 2014 Research and Markets has ... Market 2014-2018" report to their offering. ... is a technique used to determine the size of a ... is crucial to analyze the size of particles as it ... analysis is performed to determine the behavior and nature of ...
(Date:7/25/2014)... , July 25, 2014 Amgen (NASDAQ: ... Directors today declared a $0.61 per share dividend for ... paid on Sept. 5, 2014, to all stockholders of ... 14, 2014.  About Amgen Amgen is ... suffering from serious illnesses by discovering, developing, manufacturing and ...
(Date:7/25/2014)... According to a new market report ... Global Industry Analysis, Size, Share, Growth, Trends and Forecast, ... estimated at USD 161,056.5 million in 2014 and is ... 2014 to 2020, to reach an estimated value of ... market is witnessing a significant growth due to the ...
Breaking Biology Technology:Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 2Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 3Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 4Global Particle Size Analysis Market 2014-2018 2Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Biological Drugs Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Biological Drugs Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3
... world,s thinnest material to create the world,s smallest transistor, ... their peer-reviewed findings in the latest issue of the ... from The School of Physics and Astronomy at The ... into tiny electronic circuits with individual transistors having a ...
... Anthera Pharmaceuticals,Inc., a privately held biopharmaceutical ... scientists and,collaborators have released data from the ... Arteriosclerosis, Thrombosis, and Vascular,Biology (ATVB) Annual Conference ... Anthera has completed Phase II trials in ...
... - Long-form web-based PSA ("Life. Lessons. Legacy.") features,Carnegie-Mellon Professor,s fight against pancreatic cancer ... ... cancer killer, - PSA debuts on heels of Lustgarten Foundation,s limited online ... of "The ...
Cached Biology Technology:Graphene used to create world's smallest transistor 2Anthera Presents Data on Varespladib at ATVB Meeting 2The Lustgarten Foundation for Pancreatic Cancer Research Launches New Public Service Announcement Featuring 'Last Lecturer' Dr. Randy Pausch 2
... normal paraffin tissue array is designed ... of interest in extensive panels of ... brain, heart, kidney, liver, lung, muscle, ... on positively charged glass slide. ...
... DeStreak Reagent, 1 ml. ... 2-D gels by preventing streaking.Eliminates ... oxidation of proteins.Stabilizes proteins throughout ... simplified, well-resolved protein patterns.Ideal for ...
GENOMIPHI HY KIT 1000 RXN, 1 EA. Category: Genomics DNA Amplification....
...
Biology Products: