Navigation Links
Copper making salmon prone to predators
Date:7/9/2012

PUYALLUP, Wash.Minute amounts of copper from brake linings and mining operations can affect salmon to where they are easily eaten by predators, says a Washington State University researcher. Jenifer McIntyre found the metal affects salmon's sense of smell so much that they won't detect a compound that ordinarily alerts them to be still and wary.

"A copper-exposed fish is not getting the information it needs to make good decisions," says McIntyre, a postdoctoral research associate in WSU's Puyallup Research and Extension Center. Her research, conducted for a University of Washington doctorate with colleagues at UW and the National Oceanic and Atmospheric Administration, appears in the latest issue of the journal Ecological Applications.

Earlier research showed that copper impacts a salmon's sense of smell. Other research showed that when a salmon's sense of smell is affected, its behavior changes.

McIntyre put the two together, exposing juvenile coho salmon to varying amounts of copper and placing them in tanks with cutthroat trout, a common predator. The results were striking.

Salmon are attuned to smell a substance called Schreckstoff. German for "scary stuff," it is released when a fish is physically damaged, alerting nearby fish to the predator's presence.

In her experiments, conducted in a four-foot-diameter tank, fish that weren't exposed to copper would freeze in the presence of Schreckstoff, making it harder for motion-sensitive predators to detect them. On average, half a minute would go by before they were attacked.

But salmon in water with just five parts of copper per billion failed to detect the Schreckstoff and kept swimming. They were attacked in about five seconds.

"It's very simply and obviously because predators can see them more easily," says McIntyre. "They're not in lockdown mode."

The unwary exposed fish were also more likely to be killed in the attack, being captured 30 per
'/>"/>

Contact: Jenifer McIntyre
jen.mcintyre@wsu.edu
206-369-1832
Washington State University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Copper chains: Study reveals Earths deep-seated hold on copper
2. Hybrid copper-gold nanoparticles convert CO2
3. Making memories: How 1 protein does it
4. Killer silk: Making silk fibers that kill anthrax and other microbes in minutes
5. Chemical engineers at UMass Amherst find high-yield method of making xylene from biomass
6. UCI-led study uncovers how Salmonella avoids the bodys immune response
7. 2 servings of salmon a week is healthy for pregnant women and their babies
8. Why letting salmon escape could benefit bears and fishers
9. UCSB researchers find a way to detect stealthy, hypervirulent Salmonella strains
10. UCSB researchers discover particularly dangerous Salmonella
11. Salmonella infection, but not as we know it
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Copper making salmon prone to predators
(Date:7/24/2014)... in the United States, wildland managers often utilize the ... trees (ladder fuels). These cuttings and other post-logging ... danger in order to dispose of the material. To ... often cover all or part of the debris pile ... plastic, in order to keep water out. A recent ...
(Date:7/24/2014)... of the primordial soup in which life arose have been ... University of East Anglia. , Research published today in the ... plants, yeast and very likely also in animals still perform ... of life some four billion years ago. , The ... or ocean as a result of the combination of metals, ...
(Date:7/24/2014)... a new drug that successfully treated lupus in mice, a ... $250,000 grant to expand his research to a new version ... range of autoimmune diseases., Chandra Mohan, Hugh Roy and Lillie ... published a study in Arthritis Research & Therapy outlining the ... mice and reduced the number of cases of lupus-related kidney ...
Breaking Biology News(10 mins):Study gives new perspective on agricultural plastic, debris burning, and air quality 2Biomedical engineer looks at new applications for novel lupus drug 2Biomedical engineer looks at new applications for novel lupus drug 3
... A deep ocean current with a volume equivalent to 40 ... near the Kerguelen plateau, in the Indian Ocean sector of ... paper published today in Nature Geoscience , the researchers ... surface as an important pathway in a global network ...
... National Oceanography Centre in Southampton, have today set sail from ... Ocean affected by ash from the Icelandic volcano eruption to ... of the ocean the productivity of microscopic plants, called phytoplankton, ... sequester carbon dioxide from the atmosphere, is limited by the ...
... Spanish . , Two new compact oakleaf ... by Agricultural Research Service (ARS) scientists. "Ruby Slippers" ... geneticist Sandy Reed with the U.S. National Arboretum,s Floral ... The arboretum is operated by ARS, the principal intramural ...
Cached Biology News:Massive Southern Ocean current discovered 2Scientists to measure impact of volcanic ash on ocean biology 2New hydrangea cultivars for landscape gardens 2
(Date:7/24/2014)... Calif. , July 24, 2014  Now available ... to home. Rehealth Regenerative Therapies , located in ... and other physically active people a new health option: ... Regardless of age, countless patients suffer from joint ... activities, such as muscle tears, torn rotator cuff, tennis ...
(Date:7/24/2014)... Quantum computers have yet to materialise. Yet, scientists ... making such computers faster. One such approach relies ... controlled by applying an electric field. A new ... coherently coupled quantum dots (TQDs) with electrical impulses ... for example, should TQDs be used as quantum ...
(Date:7/24/2014)... 2014 Your cell phone may ... lithium-ion battery storage capacity. , New research indicates ... model created at Lawrence Livermore National Laboratory ... how carbon components will perform as electrodes. , ... urgent need for higher-performance batteries. Several key characteristics ...
(Date:7/24/2014)...  Neogen Corporation (Nasdaq: NEOG ) advised ... revenue from new rodenticide research are premature. In its ... July 22, 2014, Neogen,s CEO commented about several new ... "It was my intent Tuesday at our conference ... new type of rodenticide, but certainly not to give ...
Breaking Biology Technology:Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3Getting More Life out of Lithium-ion Batteries 2Neogen comments on SenesTech 2
... Santini, Jr., PhD, CEO of,MicroCHIPS, Inc., is named ... the,2008 class of "young geniuses shaping the future ... Dr. Santini is the only honoree who is ... commercial venture.,His company, MicroCHIPS, is pioneering intelligent medical ...
... Joins as Associate Director, SAN FRANCISCO, ... today announced that it has launched Invigorate,Communications, ... serving,the diverse communications needs of leading biopharmaceutical, ... interested in,building health-based brands. Invigorate currently provides ...
... 14 Imaging,Diagnostic Systems, Inc., (OTC Bulletin Board: ... systems, announced today that its,distributor, Laszlo Meszaros of ... Mammography (CTLM(R)) system for Budapest, Hungary., (Logo: ... will be installed at the new MeDoc HealthCare ...
Cached Biology Technology:MicroCHIPS CEO Named in Popular Science's 'Seventh Annual Brilliant 10' 2WeissComm Launches Invigorate Communications to Help Companies Build Successful Health-Based Brands 2Imaging Diagnostic Systems Sells Its CT Laser Mammography System to Budapest, Hungary 2
Methylation analysis of gene promoters using bilsulfite treatment of DNA and comparative DNA sequence analysis. Probe design and PCR included....
... Agencourt offers quick turnaround sequencing of individual ... and high copy plasmids. Agencourt's world-class, high ... Phred20 bases per day. The key ... service are 24 48 hour sample ...
A component of the Acridinium protein labeling kit....
... Life Sciences can provide custom microplate coating using advanced automated ... variety of plate formats. We can also accommodate virtually any ... of 0.5-320 L):, , ... 96 well microplate, 384 well ...
Biology Products: