Navigation Links
Study uncovers new evidence on species evolution

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 involved in speciation, and how natural selection works upon them.


Contact: Bernard Crespi
Simon Fraser University

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:
(Date:6/9/2016)... in attendance control systems is proud to announce the introduction of fingerprint attendance control ... right employees are actually signing in, and to even control the opening of doors. ... ... ... Photo - ...
(Date:6/2/2016)... 2016 The Department of Transport Management ... 44 million US Dollar project, for the , ... Personalization, Enrolment, and IT Infrastructure , to ... and implementation of Identity Management Solutions. Numerous renowned international vendors ... Decatur was selected for the most compliant and ...
(Date:5/24/2016)... Ampronix facilitates superior patient care by providing unparalleled technology to leaders of the medical ... premium product recently added to the range of products distributed by Ampronix. ... ... ... Ampronix News ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , ... June 23, 2016 , ... ... pleased to announce the launch of their brand, UP4™ Probiotics, into Target stores ... 35 years, is proud to add Target to its list of well-respected retailers. ...
(Date:6/23/2016)... June 23, 2016 Houston Methodist Willowbrook ... Cy-Fair Sports Association to serve as their official ... Houston Methodist Willowbrook will provide sponsorship support, athletic ... with association coaches, volunteers, athletes and families. ... Cy-Fair Sports Association and to bring Houston Methodist ...
(Date:6/23/2016)... SAN FRANCISCO , June 23, 2016   ... it has secured $1 million in debt financing from ... to ramp up automation and to advance its drug ... for its new facility. "SVB has been ... goes beyond the services a traditional bank would provide," ...
(Date:6/23/2016)... , June 23, 2016 Apellis Pharmaceuticals, ... 1 clinical trials of its complement C3 inhibitor, ... and multiple ascending dose studies designed to assess ... of subcutaneous injection in healthy adult volunteers. ... either as a single dose (ranging from 45 ...
Breaking Biology Technology: