Navigation Links
Columbia River salmon are adapting to climate change
Date:12/1/2011

/p>

Lisa G. Crozier, Mark D. Scheuerell, Richard W. Zabel, "Using Time Series Analysis to Characterize Evolutionary and Plastic Responses to Environmental Change: A Case Study of a Shift toward Earlier Migration Date in Sockeye Salmon." http://www.jstor.org/stable/10.1086/662669


Predators Keep Local Frogs In Uniform

Peruvian poison dart frogs of the genus Ranitomeya are jewels of the rainforest, renowned for the diversity of vivid colors they display, which vary greatly from region to region. Obviously, these colors have not evolved for our amazement, but rather to warn predators that they will be greatly ill if they dare taste them. But how do predators keep track ofand learn to avoidso many color patterns. And why do poison-dart frogs maintain such a high diversity of color patterns? Researchers from the University of Montreal have recently showed that diversity in poison-dart frogs is maintained locally due to the predators avoiding only one color pattern and quickly eliminating all others. Using hundreds of life-sized clay models painted to resemble the distinct color patterns of poison dart frogs, the researchers found that avian predators avoided models with the local coloration, but attacked models with non-local colors. The results show that the local predators have come to recognize and avoid the local frogs. "Being exotic is, in this case, not advantageous at all, as the frogs' vivid coloration make them more easily detected by predators that have not learned to recognize them," said Dr. Chouteau. These results highlight the close relationship between the colorful amphibians and their predators, and demonstrate that the geographic diversity of color patterns is maintained by the learning experience of a distinct predator community.

Mathieu Chouteau, Bernard Angers, "The Role of Predators in Maintaining the Geographic Organization
'/>"/>

Contact: Kevin Stacey
kstacey@press.uchicago.edu
401-284-3878
University of Chicago Press Journals
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Columbia to award 2008 Horwitz Prize to Arthur Horwich & Ulrich Hartl for cellular protein folding
2. Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions
3. Salmon smolt survival similar in Columbia and Fraser rivers
4. Columbia University scientist devises new way to more rapidly generate bone tissue
5. Columbia University Medical Center announces 2009 Katz Prizes in Cardiovascular Research
6. Columbia engineer part of team to receive $6.2 million DOD grant for blast research
7. Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research
8. Columbia University uses technological innovation to study bone structure
9. Columbia engineer observes surprising behavior of cells during blood-vessel formation
10. Columbia professor to discuss good, bad aspects of choice at NJIT March 23 talk
11. Columbia engineers patch a heart
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Columbia River salmon are adapting to climate change
(Date:4/17/2014)... One day about eight years ago, Katia Silvera , ... her father were on a field trip in a mountainous ... they had never seen before. , Unable to identify it, ... The orchid turned out to be an unnamed species. So ... . , "Lophiaris" is the genus name, comprising about 40 ...
(Date:4/17/2014)... of forests in the Amazon help create tinderbox ... rapid and widespread forest loss during drought years, ... show that forests in the Amazon could reach ... forest fires lead to large-scale loss of trees, ... professor of geography, Penn State. , "We documented ...
(Date:4/17/2014)... Current Biology on April 17 have discovered little-known ... insects, which represent four distinct but related species in ... of an animal with sex-reversed genitalia. , "Although ... Neotrogla is the only example in which ... from Hokkaido University in Japan. , During copulation, which ...
Breaking Biology News(10 mins):Orchid named after UC Riverside researcher 2Orchid named after UC Riverside researcher 3Drought and fire in the Amazon lead to sharp increases in forest tree mortality 2Drought and fire in the Amazon lead to sharp increases in forest tree mortality 3In sex-reversed cave insects, females have the penises 2
... Mannitol, a sugar alcohol produced by fungi, bacteria, and algae, ... sweetener is also used in the medical field it,s ... excess fluids and used during surgery as a substance that ... drugs. Now Profs. Ehud Gazit and Daniel Segal of ...
... populations are declining worldwide and a major cause is a ... two-year study shows they can also die from this pathogen, ... that just spreads the disease. When researchers raised the ... least one strain of this pathogen, Batrachochytrium dendrobatidis , ...
... SAN FRANCISCO (June 16, 2013)Male mice who were fed a ... offspring who also had higher levels of body fat, a ... primarily in male offspring, despite their consumption of a low-fat ... Endocrine Society in San Francisco, Calif. , "We,ve identified a ...
Cached Biology News:Artificial sweetener a potential treatment for Parkinson's disease 2Bullfrogs may help spread deadly amphibian fungus, but also die from it 2Obese male mice father offspring with higher levels of body fat 2
(Date:1/14/2014)... Carahsoft and CDS Federal Services have scheduled ... 2pm EST (11am PST), “Natural Language Processing: Converting Raw ... technology can turn raw, heterogeneous data into actionable knowledge ... online webinar will last approximately one hour. , Synopsis: ...
(Date:1/14/2014)... The largest international professional organization of scientists ... derivatives thereof has endorsed an educational program that ... challenges of adulterated herb and botanical products. ... The Society for Medicinal Plant and Natural Product ...
(Date:1/14/2014)... 2014 Global Record Systems, LLC, ... technology solutions for patients, physicians, the biopharmaceutical industry, ... today the signing of a three-year Research Collaboration ... Administration (FDA). This initiative is designed to ...
(Date:1/14/2014)... Altadena, CA (PRWEB) January 14, 2014 ... Angeles County), California, and Montreal, Canada, has big ideas ... and non-fiction. The press's goals are to produce high-quality, ... e-books to support local businesses. , The first ...
Breaking Biology Technology:Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2Bitingduck Press Looks Forward to 2014 With Multimedia E-books 2
... March 7, 2012 Molecular Detection Inc. (MDI), ... the speed and accuracy of infectious disease diagnosis, ... million financing.  The funds are primarily being used ... the detection of sepsis and gastrointestinal (GI) diseases.  ...
... 2012   Proteonomix, Inc. (OTC/BB: PROT) announced today ... institutional investors, pursuant to which the Company has agreed ... stock at an aggregate purchase price of approximately $3.8 ... shares of Proteonomix common stock) and Series A, Series ...
... including Drexel University,s Dr. Yury Gogotsi has given the ... of the electrodes of supercapacitors the low-cost, lightweight ... many other applications. In a piece published in the ... and his collaborators from universities in France and England, ...
Cached Biology Technology:Molecular Detection Inc. Completes $1.5 Million Financing to Advance New Tests for Sepsis and GI Disorders 2Molecular Detection Inc. Completes $1.5 Million Financing to Advance New Tests for Sepsis and GI Disorders 3Molecular Detection Inc. Completes $1.5 Million Financing to Advance New Tests for Sepsis and GI Disorders 4Proteonomix Announces a Private Placement of $3.8 Million 2Proteonomix Announces a Private Placement of $3.8 Million 3Proteonomix Announces a Private Placement of $3.8 Million 4Drexel's Gogotsi and team advance understanding of energy storage mechanisms in Nature Materials 2
MultiWash III w/ 12-portStandard Manifold...
...
... Performance, 5 ml. The same high ... Streptavidin columns for fast, reliable purification ... Tricorn 5/50 GL, XK 16/20, or ... are required.Extremely useful for exploiting either ...
...
Biology Products: