Navigation Links
Salmon may use magnetic field as a navigational aid
Date:2/7/2013

CORVALLIS, Ore. The mystery of how salmon navigate across thousands of miles of open ocean to locate their river of origin before journeying upstream to spawn has intrigued biologists for decades, and now a new study may offer a clue to the fishes' homing strategy.

In the study, scientists examined 56 years of fisheries data documenting the return of sockeye salmon to the Fraser River in British Columbia and the route they chose around Vancouver Island showed a correlation with changes in the intensity of the geomagnetic field.

Results of the study, which was supported by Oregon Sea Grant and the National Science Foundation, were published this week in the journal Current Biology.

"What we think happens is that when salmon leave the river system as juveniles and enter the ocean, they imprint the magnetic field logging it in as a waypoint," said Nathan Putman, a post-doctoral researcher at Oregon State University and lead author on the study. "It serves as a proxy for geographic location when they return as adults. It gets them close to their river system and then other, finer cues may take over."

Earth has a predictable, consistent geomagnetic field that weakens as you move from the poles toward the equator. The magnetic North Pole has an intensity gradient of roughly 58 microtesla, while the equator is about 24 microtesla.

Salmon originating from Oregon that have spent two to four years in the northern Pacific Ocean off Canada or Alaska would return as adults, the scientists speculate, journeying southward off the coast until they reached a magnetic field intensity similar to that of their youth.

"That should get them to within 50 to 100 kilometers of their own river system and then olfactory cues or some other sense kicks on," said Putman, who conducts research in OSU's Department of Fisheries and Wildlife.

Vancouver Island provides a natural laboratory for the study of salmon, the rese
'/>"/>

Contact: Nathan Putman
Nathan.putman@oregonstate.edu
205-218-5276
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. UCI-led study uncovers how Salmonella avoids the bodys immune response
2. 2 servings of salmon a week is healthy for pregnant women and their babies
3. Why letting salmon escape could benefit bears and fishers
4. UCSB researchers find a way to detect stealthy, hypervirulent Salmonella strains
5. UCSB researchers discover particularly dangerous Salmonella
6. Salmonella infection, but not as we know it
7. West coast experiencing decreasing trends in salmon spawning
8. Copper making salmon prone to predators
9. Bears, scavengers count on all-you-can-eat salmon buffet lasting for months
10. Do beavers benefit Scottish wild salmon?
11. Assessing a new technique for ensuring fresh produce remains Salmonella-free
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/11/2014)... 2014  Forensicon, Inc., a Chicago ... announce the promotion of Yaniv Schiff from ... In Schiff,s new role as Director, he will lead ... forensics examiners and provide leadership within the company,s digital ... http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined Forensicon in ...
(Date:11/6/2014)... groundbreaking paper from a team of Florida State University ... plants could adapt to and survive environmental swings such ... the latest issue of the journal The Plant ... of DNA and proteins) is organized in a cell ... genes are turned on and others are turned off. ...
(Date:11/5/2014)... has dedicated his career to understanding the Earth,s ... audience. , As deputy director and regional climatologist ... Desert Research Institute, Redmond has more than three ... dissemination of climate data to the general public. ... San Francisco on December 15-19, 2014 the American ...
Breaking Biology News(10 mins):Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Maize analysis yields whole new world of genetic science 2Nevada climatologist to be honored at AGU Fall Meeting for lifetime of public outreach 2
... tracts (guts) of healthy American children have numerous antibiotic ... by scientists at Washington University School of Medicine in ... they can be shared with harmful microbes, interfering with ... to serious illness and, in some cases, death. ...
... researchers report that the deletion of any single gene in ... leading to a mutation in another gene. Their discovery, which ... DNA is conserved across species, could have significant consequences for ... areas of research, they say. Summarized in a report ...
... of Oceanography at UC San Diego and their colleagues ... that produces a dazzling bioluminescent display in the form ... Found around the world in muddy environments, from shallow ... Chaetopterus marine wormcommonly known as the "parchment ...
Cached Biology News:Gut microbes in healthy kids carry antibiotic resistance genes 2Gut microbes in healthy kids carry antibiotic resistance genes 3Deletion of any single gene provokes mutations elsewhere in the genome 2Deletion of any single gene provokes mutations elsewhere in the genome 3Nature's glowing slime: Scientists peek into hidden sea worm's light 2Nature's glowing slime: Scientists peek into hidden sea worm's light 3
(Date:11/21/2014)... The November 2014 issue of BioTechniques ... access journal featuring the following articles:, , ... photoresponsiveness in the retina , DNA from ... using chromogenic substrates in zebrafish , Re-use ... electrophoresis , Nuclear LC3-positive puncta in stressed ...
(Date:11/21/2014)... 2014 Polaris Group announced today that ... Phase 1 trial of ADI-PEG 20 in combination ... malignant pleural mesothelioma (MPM) and non-squamous non-small cell ... on ADI-PEG 20, both as monotherapy and in ... several other indications, including breast cancer, melanomas, ovarian ...
(Date:11/18/2014)... 17, 2014 RPS Diagnostics (RPS®) ... – today announces its third annual partnership of ... Get Smart About Antibiotics Week from November 17-23. ... national campaign designed to highlight the coordinated efforts ... non-profit and for-profit partners to provide education about ...
(Date:11/18/2014)... 18, 2014 American Process Inc. ... formed a partnership with researchers at Georgia Institute ... Technology, and the USDA’s Forest Products Laboratory to ... nanocellulose. Nanocellulose is a rapidly emerging high performance ... project is to replace heavy steel structures within ...
Breaking Biology Technology:BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 2BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 3Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 2American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 3
... End of 2008, NOVATO, Calif., Sept. 25 ... today that its partner Merck,Serono, a division of ... for Kuvan(R) (sapropterin dihydrochloride) as an oral,treatment for ... (BH4) deficiency from the Committee for,Medicinal Products for ...
... 25 Bion Environmental Technologies,Inc. (OTC Bulletin Board: BNET) ... entitled, "Low Oxygen Organic Waste,Bioconversion System" has been granted ... Standard Patent number of 2002227224. The,official filing date is ... be,in force until an expiration date of November 8, ...
... ... in FUNCTIONAL FOOD market-- LAVAL, QC, Sept. ... TSX.V.NTB) reported today,that it entered a worldwide alliance with Marine ... Nutrition for the distribution,of dietary supplements and functional food products ...
Cached Biology Technology:Kuvan Receives Positive Opinion From CHMP for European Approval 2Kuvan Receives Positive Opinion From CHMP for European Approval 3Kuvan Receives Positive Opinion From CHMP for European Approval 4Bion Announces Approval of New Australian Patent for Low Oxygen Organic Waste Bioconversion for Livestock Waste Environmental Treatment 2Neptune Technologies and Marine Life Sciences enter worldwide distribution alliance with Weider Global Nutrition 2Neptune Technologies and Marine Life Sciences enter worldwide distribution alliance with Weider Global Nutrition 3Neptune Technologies and Marine Life Sciences enter worldwide distribution alliance with Weider Global Nutrition 4
Mouse Cell Line Slides...
Request Info...
Human Cell Line Slides...
... Level 2 Detection System combines the ... bonding principle and Signets unique formulation ... specificity and reliablility. Signet reagents will ... manual and automated protocols. ,Signets USA ...
Biology Products: