Navigation Links
Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions
Date:10/27/2008

Canadian and U.S. researchers have made a surprising discovery that some endangered Pacific salmon stocks are surviving in rivers with hydroelectric dams as well as or better than in rivers without dams.

This is the first study of its kind and is carried out by an international team of scientists that includes researchers from the University of British Columbia. Their findings will appear in the October 28 issue of the open access journal PLoS Biology, published by the Public Library of Science.

The team compared the survival rates of out-migrating, juvenile spring Chinook and steelhead salmon from two river basins: the heavily dammed Snake and Columbia Rivers and the free-flowing Thompson and Fraser Rivers both critical spawning grounds for numerous salmon species.

Using technology that has only recently been available, the team electronically tagged juvenile salmon (smolts) and monitored their journey from freshwater into the ocean via a large-scale acoustic telemetry system called the Pacific Ocean Shelf Tracking (POST) array.

"It came as quite a surprise to us that the Fraser River salmon populations studied have lower survival than the Columbia River study populations," says Erin Rechisky, one of the study authors and a PhD Candidate in the UBC Dept. of Zoology.

Rechisky stresses that there is not yet sufficient evidence to reach any conclusions. "Clearly dams are not good for salmon. What is unclear is whether the Fraser River has a problem that cuts salmon survival to that of a heavily dammed river, or whether factors other than dams play a larger, unsuspected role in salmon survival."

Only in recent years have acoustic tags become small enough for scientists to implant them into juvenile salmon and track them as they migrate downstream. These innovations enabled the team to gather data on salmon smolts in the Fraser River. Before that, it was only possible to measure juvenile survival wher
'/>"/>

Contact: Lorraine Chan
lorraine.chan@ubc.ca
604-822-3213
University of British Columbia
Source:Eurekalert

Page: 1 2

Related biology news :

1. Gene associated with pair-bonding in animals has similar effects in human males
2. Telepathic genes recognize similarities in each other
3. Mountain summits in the Alps becoming increasingly similar
4. Club drugs inflict damage similar to traumatic brain injury
5. Purdue research finds similarities in dog, human breast cancer pre-malignant lesions
6. Of mice and men: similarities between skeletons of both
7. Influence of sex and handedness on brain is similar in capuchin monkeys and humans
8. U of MN study shows link between gene variations and cancer survival
9. Second lumpectomy for breast cancer reduces survival rates
10. The IMF says journal editorial documents dramatic increase in survival since the 1980s
11. International team reveals first prognosticator of survival in aggressive cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/11/2015)... -- Through a well-rounded UAS delegation representing private industry, government, and ... at AUVSI,s Unmanned 2015 conference last week in ... UAS industry met with over 200 hundred people from ... UAS ecosystem. "Our message is clear and ... Rich Knoll . "If you want to fly UAS, ...
(Date:5/10/2015)... Fingerprint Cards (FPC) has received an order for ... World Peace Industrial Group (WPI), part of WPG Holdings. WPI ... . Deliveries are planned to take place during Q3 2015 ... China . The order value of 235 ... 1 000 MSEK for 2015.   Jörgen Lantto, acting ...
(Date:5/7/2015)... Sweden , May 7, 2015 ... touch fingerprint sensors, FPC1022 and FPC1035, FPC,s smallest ... and FPC1035 are mainly considered for integration on ... size gives smartphone OEMs increased possibilities to integrate ... The decreased size also improves possibilities for module ...
Breaking Biology News(10 mins):Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2
... the most common type of lung cancer are notoriously ... to the cellular pathways that regulate responses to cisplatin ... 26th in the journal Cell Reports . The ... to predict how these patients will respond to chemotherapy, ...
... Hole Oceanographic Institution (WHOI) researchers have partnered with ... developed at WHOI: the Imaging FlowCytobot, an automated ... that uses light to provide wireless transmission of ... time. WHOI biologists Robert Olson and Heidi ...
... University of Leeds and the Chinese Academy of Sciences have ... next generation energy storage systems. Finding more effective and ... deal with the problem of peak demand on electricity grids. ... solar generation is also a pressing problem. People use ...
Cached Biology News:New biomarker for common lung cancer predicts responses to chemotherapy 2WHOI scientists/engineers partner with companies to market revolutionary new instruments 2WHOI scientists/engineers partner with companies to market revolutionary new instruments 3WHOI scientists/engineers partner with companies to market revolutionary new instruments 4University of Leeds and Chinese Academy of Sciences join forces 2University of Leeds and Chinese Academy of Sciences join forces 3
(Date:6/1/2015)... , June 1, 2015  Fennec Pharmaceuticals, Inc. ... positive interim results from a poster presented today ... label randomised phase III trial of the efficacy ... patients receiving cisplatin (Cis) monotherapy for standard risk ... American Society of Clinical Oncology (ASCO) 2015 Annual ...
(Date:6/1/2015)... , June 1, 2015  Neogen Corporation (NASDAQ: NEOG ... Sterling Test House, a leading commercial food testing laboratory based ... acquired laboratory will serve as a base for the company,s ... Sterling Test House was incorporated in 1990, ... the food safety and water quality testing for major hotels ...
(Date:6/1/2015)... Sistemic Ltd. and RoosterBio Inc. announced ... collaboration agreement and signed a memorandum of understanding ... work together towards advancing the field of mesenchymal ... will collaborate on utilizing microRNA (miRNA)-based cell characterisation ... relevant characterization panels for hMSC products and in ...
(Date:6/1/2015)... Esperance Pharmaceuticals Inc. today reported positive results ... in ovarian cancer patients resistant to paclitaxel. EP-100 is ... cancer cells that overexpress luteinizing hormone-releasing hormone (LHRH) receptors ... wide range of cancers. Results of ... were presented at the 2015 ASCO Annual Meeting ...
Breaking Biology Technology:Fennec Announces Presentation Of Positive Interim Sodium Thiosulfate Phase III Safety Data At The 2015 ASCO Annual Meeting 2Fennec Announces Presentation Of Positive Interim Sodium Thiosulfate Phase III Safety Data At The 2015 ASCO Annual Meeting 3Fennec Announces Presentation Of Positive Interim Sodium Thiosulfate Phase III Safety Data At The 2015 ASCO Annual Meeting 4Neogen acquires India food safety company 2Sistemic and RoosterBio Inc Announce Broad Collaboration Agreement to Advance miRNA and Mesenchymal Stem/Stromal Cell (MSC) Regenerative Technology 2Sistemic and RoosterBio Inc Announce Broad Collaboration Agreement to Advance miRNA and Mesenchymal Stem/Stromal Cell (MSC) Regenerative Technology 3Sistemic and RoosterBio Inc Announce Broad Collaboration Agreement to Advance miRNA and Mesenchymal Stem/Stromal Cell (MSC) Regenerative Technology 4Esperance Reports Positive EP-100 Phase ll Results in Ovarian Cancer at 2015 ASCO Annual Meeting 2Esperance Reports Positive EP-100 Phase ll Results in Ovarian Cancer at 2015 ASCO Annual Meeting 3
... 30, 2011 Current Ceo Rudi Pauwels ... , New Ceo   Appointment Strengthens ... Of Its   First Product In 2013 ... diagnostic (MDx) systems designed to drive personalized medicine and ...
... Nov. 30, 2011  DiaTech Life Sciences has announced the ... use of the Microculture Kinetic (MiCK) assay for ... chemotherapy is most effective for cancer patients. DiaTech has ... developed a model to assist pharmaceutical companies in validating ...
... today that Lex Van der Ploeg, PhD, has joined ... Ploeg brings to Rhythm more than 25 years of ... therapeutic areas. "Lex has considerable experience with ... are targeting with our ghrelin and melanocortin 4 receptor ...
Cached Biology Technology:Biocartis Names Dr. Nayan Gregory Parekh As Chief Executive Officer 2Biocartis Names Dr. Nayan Gregory Parekh As Chief Executive Officer 3Biocartis Names Dr. Nayan Gregory Parekh As Chief Executive Officer 4DiaTech Life Sciences Announces Medical Advisory Board 2DiaTech Life Sciences Announces Medical Advisory Board 3Rhythm Names Lex Van der Ploeg Chief Scientific Officer 2
...
Human RUNX2/CBFA1 MAb (Clone 232902)...
Whole rabbit blood (any breed, either sex) is collected at the time of slaughter and processed immediately at 4C, bottled, frozen and stored at -70C....
Animal Origin Free...
Biology Products: