Navigation Links
Researchers map the epic evolution of a 'ring species'
Date:5/25/2014

The Greenish Warbler, long considered an idealized example of a single species that diverged into two as it expanded its range, has a much more checkered family history than biologists previously realized.

Ring species are a continuous loop of related populations, each adapted to its local environment, with two terminal populations in the loop meeting but now unable to mate. But an in-depth genomic analysis published today in Nature by University of British Columbia researchers reveals that the Greenish Warbler's genetic migration through central Asia involved periods of geographic separation and hybridization.

"We've shown that the evolution of ring species is much more complex than the smooth and continuous divergence envisioned by the classic model," says UBC zoologist Miguel Alcaide, the paper's lead author.

"If you view the ring of Greenish Warbler subspecies as a river, over the years the flow of populations has experienced periods of isolation--as if forming ponds during a draught--which accelerated genetic differences. This would have been interspersed with periods of flooding, or rapid exchange between populations. Interbreeding after range expansion has been, however, much more restricted among neighboring populations exhibiting substantial differences in morphology and behavior."

Originally expanding out of southern Asia, subspecies of greenish warbler have diverged around the expanse of the Tibetan plateau over thousands of years, with two distantly related populations meeting again in the north, in central Siberia. Since early observations in the 1930s, biologists have thought the terminal sub-species incapable of mating. The new analysis shows that small regions of the western Siberian genome can be found in some of the eastern Siberian birds, indicating some successful hybridization between those forms.

"Given the new genomic evidence for historical breaks in gene flow, it's remarkable that t
'/>"/>

Contact: Miguel Alcaide
malcaidetor@gmail.com
778-317-2176
University of British Columbia
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers map the epic evolution of a 'ring species'
(Date:9/18/2014)... to acquire and creatively manipulate spoken language is unique ... past 6 million years of human evolution to make ... best candidate gene we now have," says Wolfgang Enard, ... his efforts to understand the molecular biological basis of ... The results of his latest study, undertaken in collaboration ...
(Date:9/18/2014)... built the first smartphone app that automatically reveals ... In other words, your smartphone knows your state ... and how that affects you. , The StudentLife ... loneliness to their academic performance, also may be ... to monitor mental health, trigger intervention and improve ...
(Date:9/18/2014)... ALEXANDRIA, Va.Sept. 18, 2014Many Americans across racial and ... the greatest impact on their day-to-day life, more ... memory, hearing and speech (57% of African-Americans, 49% ... of Hispanics). When asked which disease or ailment ... blindness ranked first among African-Americans followed by AIDS/HIV. ...
Breaking Biology News(10 mins):Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 4Americans rate losing eyesight as having greatest impact on their lives 2Americans rate losing eyesight as having greatest impact on their lives 3
... A team of researchers at the University of ... boardroom in an effort to build a business based ... The work of Claus Tittiger, professor of ... a highly competitive and intense National Science Foundation business-validation ...
... years of research at the Institute of Food Research, ... by food and drug companies worldwide. , IFR and ... secured funding from the Biotechnology and Biological Sciences Research ... to validate and improve how well it simulates the ...
... Pompeu Fabra University (Spain) have created a high resolution atlas ... The study demonstrates that an average image of an organ ... of comparing individual cases and differentiating healthy forms from pathologies. ... heart and its components such as the ventricles and ...
Cached Biology News:Insect research heads down path to start-up company with NSF I-Corps program 2Insect research heads down path to start-up company with NSF I-Corps program 3Commercial future for Model Gut 2An atlas of the human heart is drawn using statistics 2
(Date:9/19/2014)... , Sept. 19, 2014 Pfenex Inc. (NYSE ... development of high-value and difficult to manufacture proteins including ... at the 21 st Annual NewsMakers in the ... . Bertrand Liang , chief executive officer of ... programs and business strategy on Friday, September 26, 2014 ...
(Date:9/19/2014)... (PRWEB) September 19, 2014 Cereal ... food industries will gather October 5–8, 2014, for ... Rhode Island Convention Center in Providence, Rhode Island. ... the work of food scientists, chemists, microbiologists, nutritionists, ... and food production management. To date, 1,000 attendees ...
(Date:9/19/2014)... The new , Healthcare and Life ... today on PharmaBoardroom.com for free download , ... the Spanish economy in 2009, and the austerity measures that ... pragmatic in times of trouble. "Despite the crisis, ... European market, and the general conditions to invest are favorable ...
(Date:9/18/2014)... About POCT POCT, ... clinical laboratory. It helps in making fast clinical ... medication. POCT is gaining popularity due to the ... as diabetes, heart disease, and obesity. It is ... to minimize errors during the diagnosis of patients. ...
Breaking Biology Technology:Pfenex to Present at Upcoming Industry Conference on September 26 2Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 2Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 3PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3POCT Market in China 2014-2018 2
... - Third Wave Technologies, Inc ., has reported a ... thanks in part to higher clinical molecular diagnostic revenue during the ... quarter compared favorably to a net loss of $7.4 million, or ... stock compensation costs factored in, the company's third-quarter net loss improved ...
... Wis. - Virent Energy Systems, Inc. has ... Department of Agriculture and the Department of Energy ... of biodiesel production, into a renewable chemical called propylene glycol. ... USDA-DOE Biomass Research and Development Initiative , which was ...
... place in the telecom industry. Not an evolution - ... is being driven by technological advances that, in turn, drive ... in turn, create hyper-competition among long established and brand new ... with others in the value chain. , ,Consumers ...
Cached Biology Technology:Third Wave reports $5.2M third quarter loss 2Virent lands $2M grant for chemical production 2No time for evolution in telecommunications 2No time for evolution in telecommunications 3No time for evolution in telecommunications 4
... Immunogen: purified recombinant human ... coli . Physical form: ... filtered solution in phosphate buffered ... (c). WB. Titertest ...
CKB Antibody (N-term) Antigen: This antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide selected within aa 1~100 of human CKB. Molecular Weight: 42644 Da...
...
The antibody recognizes the peptide sequence ESESQGPK (aa 441-448) of human class III beta-tubulin specific for neurones....
Biology Products: