Navigation Links
Study uncovers new evidence on species evolution
Date:5/15/2014

A study involving Simon Fraser University researchers and published today in the journal Science has found evidence for the genomic basis of how new species evolve, in adapting to different environments.

Researchers studying an insect known as the walking stick (genus Timema) determined that the process of "speciation" happened in association with the use of different host plants. They also determined that across many populations of the insect, those on one host plant are diverging, genetically, from the populations on another host plant, a process they call "parallel speciation."

"Parallel speciation is important because it is like replication in a scientific study - it tells you whether a pattern and process are repeatable, which lends credence and statistical rigor to the causes," says SFU biology professor Bernard Crespi, whose former PhD student, Patrik Nosil, led the research. Nosil is now a professor at the U.K.'s University of Sheffield.

"From this we can learn, more effectively than in systems where speciation processes happen only once, how new species arise."

The work involved experiments in combination with genome sequencing of populations from two host plants. The sets of individual walking sticks were put on different host plants to test directly for natural selection's role in speciation.

Whole-genome data was obtained, which allowed inference of which genes were associated with speciation processes. "This tells you about the roles of natural selection, and how many genes are involved, in speciation," Crespi notes.

The team's work extends numerous earlier studies by using whole genomes on a large scale, and conducting experiments to validate the roles of natural selection in speciation.

"The combination of whole genomes, and experiments, is unprecedented in speciation studies," says Crespi, adding that future work will involve determining what specific genes are involv
'/>"/>

Contact: Bernard Crespi
crespi@sfu.ca
778-782-3533
Simon Fraser University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. Law that regulates shark fishery is too liberal: UBC study
3. New study will help protect vulnerable birds from impacts of climate change
4. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
5. BYU study: Using a gun in bear encounters doesnt make you safer
6. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
7. Pycnogenol (French maritime pine bark extract) shown to improve menopause symptoms in new study
8. Crystal structure of archael chromatin clarified in new study
9. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
10. University of Houston study shows BP oil spill hurt marshes, but recovery possible
11. Study demonstrates cells can acquire new functions through transcriptional regulatory network
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... England Journal of Medicine reports positive results of ... against the subset of lung cancer marked by rearrangement ... 50 patients with advanced non-small cell lung cancer testing ... 72 percent, with 3 complete responses and 33 partial ... for the disease to resume its growth after being ...
(Date:9/30/2014)... German . ... foods in the world. Because they grow underground, people use ... smell of truffles is not only of interest to gourmets. ... of the Goethe University Frankfurt have discovered that the smell ... are trapped inside truffle fruiting bodies. , White truffles from ...
(Date:9/30/2014)... it comes to using marijuana, new research, involving mice ... Journal of Leukocyte Biology , suggests ... that you should. That,s because a team of Italian ... do serious long-term damage to the immune system. This ... diseases, such as multiple sclerosis, inflammatory bowel disease and ...
Breaking Biology News(10 mins):NEJM: Crizotinib effective in Phase 1 trial against ROS1 lung cancer 2On the trail of the truffle flavor 2Adolescent exposure to thc may cause immune systems to go up in smoke 2
... in German . , Jena/Leipzig. For ... extended cultivation of energy crops. Scientists have now developed ... comparing the effectiveness of strategies for the reduction of ... leads to problems to biological diversity in agrarian regions. ...
... 2012  The Intellectual Property & Science division of ... information for businesses and professionals, today announced the ... the life sciences market, a new initiative aimed ... information through application-specific solutions developed with third-party partners. ...
... With more than 1.7 million people sustaining a traumatic ... to limit inflammation and subsequent damage is critical. Approximately ... leaving 85,000 with long-term disabilities and taking the lives ... live with disabilities caused by traumatic brain injuries, often ...
Cached Biology News:How the ecological risks of extended bioenergy production can be reduced 2How the ecological risks of extended bioenergy production can be reduced 3Thomson Reuters Launches Life Sciences Partner Ecosystem to Drive Collaborative R&D Drug Processes 2Estrogen hormone reveals protective ability after traumatic brain injury 2
(Date:9/30/2014)... bio-mimicking analog of one of nature,s most efficient ... team led by Alejandro Briseno of the University ... in developing long-sought polymer architecture to boost power-conversion ... electronic devices. , Briseno, with colleagues and ... Stanford University and Dresden University of Technology, Germany, ...
(Date:9/30/2014)... Shimadzu Scientific Instruments has released ... highly precise tool for measuring displacement in rubber ... 1000-mm maximum movement distance, the DSES-1000 can measure ... length of 10 mm. In addition, it achieves ... stroke and within +/- 100 µm below 50-mm ...
(Date:9/30/2014)... 30, 2014 Proove Biosciences , ... excited to announce a new genetic test built upon ... Pain Perception Test will provide physicians with an ... pain tolerance levels are stratified between individuals. With this ... a person has a genetic predisposition that will affect ...
(Date:9/30/2014)... Sept. 30, 2014 CORD:USE Cord Blood Bank ... that it has entered into an Equity and Exclusive ... has licensed a series of patented technologies for the isolation ... clinical applications.  Tianhe is performing Phase I/II clinical trials ... Spain using Tianhe,s Stem Cell Educator Therapy ...
Breaking Biology Technology:Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 2CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 4
... from North Carolina State University shows that size plays ... hollow nanoparticles. The researchers focused on nickel nanoparticles, which ... applications in fields as diverse as energy production and ... potential for nanofabrication the creation of materials that ...
... push the boundaries of nanoscience, the Kavli Institute at Cornell ... new ideas, but a proving ground to aggressively push the ... named Paul McEuen, the Goldwin Smith Professor of Physics, as ... engineering physics, will serve as co-director. The institute ...
... Choi of the Department of Mechanical Engineering at Stevens ... the 2010 Young Investigator Program (YIP) award by the ... scientists and engineers who show exceptional promise for creative ... young outstanding scientists and engineers," said ONR,s Director of ...
Cached Biology Technology:Study shows that size affects structure of hollow nanoparticles 2Under new leadership, Kavli Institute at Cornell evolves from a think tank to a proving ground 2Dr. Chang-Hwan Choi honored with prestigious Young Investigator Award 2Dr. Chang-Hwan Choi honored with prestigious Young Investigator Award 3