Navigation Links
Rosella research could rewrite 'ring theory'

Published today in the prestigious journal Proceedings of the Royal Society B, the research investigates the genetic and geographical relationships between different forms of crimson rosellas and the possible ways that these forms may have arisen.

Dr Gaynor Dolman of CSIRO's Australian National Wildlife Collection says there are three main colour 'forms' of the crimson rosella crimson, yellow and orange which originated from the same ancestral population and are now distributed throughout south eastern Australia.

"Many evolutionary biologists have argued that the different forms of crimson rosellas arose, or speciated, through 'ring speciation'," she says.

The ring speciation hypothesis predicts that a species that spreads to new areas may eventually join back up with itself, forming a ring. By that time, the populations at the join in the ring may be two distinct species and unable to interbreed, despite continuous gene flow, or interbreeding, between populations around the ring.

"We found that in the case of crimson rosellas, their three separate genetic groups don't show a simple link to the geographical distribution of the colour forms," Dr Dolman says.

"For example, orange Adelaide and crimson Kangaroo Island rosellas are separated by 15km of ocean but are genetically similar. Conversely, genetic dissimilarity was found in the geographically linked yellow and orange populations in inland south eastern Australia.

"We rejected the ring hypothesis because it predicts only one region of genetic dissimilarity, which should occur at the geographical location of the join in the ring, around the headwaters of the Murray and Murrumbidgee Rivers.

"However, it is possible that crimson rosellas formed a ring at some stage in their evolutionary history, but that the evidence has been lost through climatic or environmental changes," she says.

Wildlife genetic research of this kind is i

Contact: Andrea Wild
CSIRO Australia

Page: 1 2

Related biology news :

1. Research shows skeleton to be endocrine organ
2. Newly created cancer stem cells could aid breast cancer research
3. Dominant cholesterol-metabolism ideas challenged by new research
4. Researchers identify proteins involved in new neurodegenerative syndrome
5. Texas researchers and educators head for Antarctica
6. MGH researchers describe new way to identify, evolve novel enzymes
7. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
8. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
9. U of MN researchers discover noninvasive diagnostic tool for brain diseases
10. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
11. Story ideas from the Journal of Lipid Research
Post Your Comments:
Related Image:
Rosella research could rewrite 'ring theory'
(Date:2/24/2015)... Feb. 24, 2015 This report analyzes the worldwide markets ... Segments: Face Biometrics, and Voice Biometrics. The report provides separate comprehensive ... Japan , Europe , Asia-Pacific ... Africa , and Latin America . Annual ... Also, a seven-year historic analysis is provided for these markets. Market ...
(Date:2/23/2015)... OXFORD, Conn. , Feb. 23, 2015 ... ("NXT-ID" or the "Company"), a biometric authentication company focused ... it has filed provisional patent 62114357 for ... With this patent, NXT-ID introduces a new groundbreaking payment ... and the payment account may only be accessed if ...
(Date:2/18/2015)... Feb. 18, 2015  Cepheid (NASDAQ: CPHD ) ... following conferences, and invited investors to participate via webcast. ... MA Tuesday, March 3, 2015 at 11.20 a.m. ... Orlando, FL Wednesday, March 4, 2015 at ... access the live webcasts for these events, please visit Cepheid,s ...
Breaking Biology News(10 mins):World Face and Voice Biometrics Industry 2World Face and Voice Biometrics Industry 3World Face and Voice Biometrics Industry 4World Face and Voice Biometrics Industry 5World Face and Voice Biometrics Industry 6World Face and Voice Biometrics Industry 7World Face and Voice Biometrics Industry 8World Face and Voice Biometrics Industry 9World Face and Voice Biometrics Industry 10World Face and Voice Biometrics Industry 11World Face and Voice Biometrics Industry 12World Face and Voice Biometrics Industry 13World Face and Voice Biometrics Industry 14World Face and Voice Biometrics Industry 15World Face and Voice Biometrics Industry 16NXT-ID Patents Voice Directed Payments 2NXT-ID Patents Voice Directed Payments 3Cepheid to Webcast Upcoming Financial Presentations 2
... TorontoResearchers at the University of Toronto, The Hospital ... University of British Columbia have identified a new treatment ... and an estimated 10% of common colds. The virus, ... most common reason for hospitalization of infants and children ...
... led by St. Jude Children,s Research Hospital scientists has ... childhood eye tumor retinoblastoma. Their work also settles a ... as scrambled as the developmental pathways at work in ... particular type of cell, researchers showed that retinoblastoma is ...
... A recent study suggests that parasites in fish, including ... impacts on fish health than has been assumed, and could ... land use changes cause salmon mortality. It,s not just ... research found, but their numbers that can build up over ...
Cached Biology News:Researchers map pathway of infection for a common, potentially life-threatening respiratory virus 2Childhood eye tumor made up of hybrid cells with jumbled development 2Childhood eye tumor made up of hybrid cells with jumbled development 3Parasite loads an underlying cause of salmon mortality, linked to land use changes 2
(Date:3/3/2015)... 2015 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") ... for odour control projects in North America , ... . "Bidding activity in 2015 continues to be ... a high volume year for bidding in 2014, we are pleased ... recent orders reflect the organization,s renewed focus on select market segments ...
(Date:3/3/2015)... DIEGO , March 3, 2015  Neurocrine Biosciences, ... Kevin Gorman , President and Chief Executive Officer ... Global Healthcare Conference in Miami.   The ... 10:15am ET (7:15am PT).  The presentation will be webcast ... .   Listeners are encouraged ...
(Date:3/3/2015)... 2015 Adaptive Biotechnologies announced today that ... Board of Director as Chair of the Audit Committee. ... Chad oversees all finance, treasury and accounting functions. Since ... finance, treasury and accounting functions, and led the finance ... 2013, he was named Puget Sound Business Journal,s CFO ...
(Date:3/3/2015)... 03, 2015 Crown Bioscience, Inc., a ... launched a new Life Science division specializing in in ... , The first products released include in vivo ... soon to be released in vivo grade monoclonal antibodies ... expand their life science portfolio with additional antibody products ...
Breaking Biology Technology:Adaptive Biotechnologies adds Chad Cohen, Zillow Group CFO, to Board of Directors 2Crown Bioscience Launches Life Science Product Catalog 2
... Part of Genetic Testing Process Says ... American College of Medical Genetics, BETHESDA, ... before, ranging from home DNA test kits, tests that can,help ... tests. Along with greater availability of genetic tests and,increased Direct-to-Consumer ...
... Yves Lionel Assant is,the new Chairman of Gerresheimer,s ... was already a member of the Supervisory Board. ... position for personal reasons. He,remains a member of ... & life science supply and services,company with market ...
... international team including scientists from the London Centre for ... of the National Academy of Sciences (PNAS) demonstrating the ... The importance of the work lies in establishing how ... produced at particle accelerators and nuclear reactors can ...
Cached Biology Technology:Statement on Direct-To-Consumer Genetic Testing 2Statement on Direct-To-Consumer Genetic Testing 3Imaging quantum entanglement 2
This bispecific antibody complex has been tested for efficient depletion of CD41+ cells using the StemSep ; negative immunomagnetic cell separation system....
... Eclipse C1 Plus is a modular confocal ... imaging with an ultra-compact and lightweight design. ... C1 Plusboost optical performance to 400nm andits ... alsoincludes support for X and Y scan ...
... integrated digital microscope and camera system that ... optical adjustment or software installation. Built on ... combines simplicity and advanced technology for users ... viewing of a macro image and a ...
... The TUNEL-based assay kit provides ... control cells for convenient detection of ... tissue sections. The incorporation of BrdU ... than biotinylated or digoxigenylated methods. Results ...
Biology Products: