Navigation Links
Savanna habitat drives birds, and perhaps others, to cooperative breeding
Date:8/16/2007

the group to try to breed elsewhere, so it is the males who often hang around for a year or two as helpers, primarily bringing food to the nestlings. Although they may occasionally breed with females in the group, the helpers often don't reproduce until later in life.

Helping relatives feed their kids increases the chances of passing on some of your genes, since siblings share a large proportion of their DNA. Yet, despite decades of research, it is still not clear why some animal species, including nearly 10 percent of bird species worldwide, show this apparently altruistic behavior, while other closely related ones do not.

In an attempt to answer this question, Rubenstein looked at the 45 species of starlings endemic to Africa to see if there was any relationship between cooperative breeding and the environment in which the birds live.

"Starlings are a model system in which to test this question because they are one of the most socially diverse groups in the world, exhibiting a wide range of social systems and living in a variety of different habitats across Africa," said Rubenstein.

Of the 117 known starling species worldwide, those in Africa, where savannas are extremely common, are the only ones known to engage in cooperative breeding. Those in the more temperate or jungle environments of Europe, Africa and Asia, including the European starling Sturnus vulgaris introduced to America, do not.

For much of the past decade, Rubenstein has intensively studied the social behavior of a variety of starling species in Kenya, home to 26 species - the most of any country in the world. Noting an apparent correlation between cooperative breeding and habitat in this family, he decided to use this socially diverse group to test several hypotheses about how environmental factors may have influenced the evolution of cooperative breeding.

Rubenstein and colleague Irby J. Lovette, director of the Fuller Evolutionary Biology Pro
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska
2. Could better mangrove habitats have spared lives in the 2004 tsunami?
3. Bird song changes sound alarm over habitat fragmentation
4. Habitat microstructure drives salamander metamorphosis
5. New tiger report release: Tiger habitat down from just a decade ago
6. Invasive species alter habitat to their benefit
7. Palaus coral reefs show differential habitat recovery following the 1998 bleaching event
8. Unchecked DNA replication drives earliest steps toward cancer
9. Climate change drives widespread amphibian extinctions
10. Mindless autopilot drives people to underestimate food decisions
11. Buildup of damaged DNA in cells drives aging
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... the Department of Energy,s Oak Ridge National Laboratory ... R&D Magazine in recognition of the year,s top ... tremendous value of our National Labs," said Secretary ... the National Labs continues to help our nation ... and technological innovations necessary to remain globally competitive." ...
(Date:7/11/2014)... Mills Canyon fire started near the City of Entiat ... local resources, the fire quickly grew to over 1,000 ... of the fire is under investigation by the Washington ... working with existing local resources in developing fire control ... Service (USFS), Washington State Department of Natural Resources, (WA ...
(Date:7/11/2014)... Chicago is creating a new professorship in tissue ... Institute for Molecular Engineering and the Marine Biological ... the Millicent and Eugene Bell Foundation., The Eugene ... the Institute for Molecular Engineering. That endowed chair ... the MBL,s Eugene Bell Center for Regenerative Biology ...
Breaking Biology News(10 mins):ORNL wins eight R&D 100s 2ORNL wins eight R&D 100s 3ORNL wins eight R&D 100s 4New professorship in tissue engineering links molecular engineering, marine biology 2
... The Asian Cancer Research Group (ACRG)an independent, ... Merck (known as MSD outside the United States ... world,s largest genomics organizationtoday announced the publication of ... hepatitis B virus (HBV) integration in hepatocellular carcinoma ...
... Organic Electronics research group at Linkping University previously developed ... ions, as well as biomolecules. Tybrandt has now succeeded ... a similar way to traditional silicon-based electronics. ... carrier consists of chemical substances with various functions. This ...
... are retreating rapidly with the ongoing global climate change. But ... glaciers can recuperate within a short timeframe if temperatures are ... Danish aerial photos combined with both old and modern satellite ... created international attention and have been published as a cover ...
Cached Biology News:ACRG and BGI report findings from genomics research on recurrent hepatitis B virus integration 2ACRG and BGI report findings from genomics research on recurrent hepatitis B virus integration 3Old aerial photos supply new knowledge on glaciers in Greenland 2Old aerial photos supply new knowledge on glaciers in Greenland 3
(Date:7/11/2014)... Research and Markets  has announced the addition of ... Analysis, Size, Share, Growth, Trends and Forecast to 2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Transfection is a technique ... into cells. This technology helps the cells to regulate ... by affecting the nuclear genes. The transfection technology market ...
(Date:7/11/2014)... AZ (PRWEB) July 11, 2014 ... device company specializing in the soft tissue reconstruction ... All-Suture Anchor System for surgeries involving the shoulder ... fixation through a novel, inserter-controlled deployment method. The ... to partial deployment, anchor pull-out, or anchor displacement ...
(Date:7/10/2014)... Boston, Mass. (PRWEB) July 10, 2014 ... , today announced that Alan Swahn, a former vice ... Terascala’s executive team as vice president of marketing. Terascala’s ... from Dell and NetApp create the highest performance and ... has been appointed to guide Terascala’s channel expansion and ...
(Date:7/10/2014)... 10, 2014 Senior supply chain management ... associations, addressed the challenges of “Reducing Cost, Lead Time, ... through strategic sourcing. Describing the partnership of the Bio ... Chain Management Institute ( SCMI) of the University ... 24 at the Kroc Institute of Peace and Justice ...
Breaking Biology Technology:International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 3Terascala Expands Executive Team 2Terascala Expands Executive Team 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4
... HILL, N.C., April 10 Thought leaders ... Depot, Qualcomm,Nationwide and others will address new ... in today,s competitive economy at the 10th,Annual ... & Retaining Top Talent, sponsored by Best ...
... N.J., April 10 Pharmacopeia,(Nasdaq: PCOP ), ... novel,small molecule therapeutics, today announced that Leslie J. ... Officer and a member of the,Board of Directors ... was,effective April 9, 2008., Joseph A. Mollica, ...
... Thermo Fisher,Scientific Inc. (NYSE: TMO ) announced that ... of 2008 before the market opens on Thursday,April 24, ... same day at 9:00,a.m. Eastern Time., During the ... as well as future expectations. To listen, call (866) ...
Cached Biology Technology:Pharmaceuticals & Biotechs to Share Insights for Developing Leaders in a Fast-Paced, Competitive Industry 2Leslie J. Browne Resigns as President and Chief Executive Officer of Pharmacopeia, Inc. 2Leslie J. Browne Resigns as President and Chief Executive Officer of Pharmacopeia, Inc. 3Leslie J. Browne Resigns as President and Chief Executive Officer of Pharmacopeia, Inc. 4Thermo Fisher Scientific to Hold Earnings Conference Call on Thursday, April 24, 2008 2
... tubes are used to store 2.0 ml ... uniform walls for uniform heat transfer and ... caps. The O-rings are made of polyethylene ... from -55 to 150 degrees C. Supplied ...
Caspr2 Antigen: Fusion protein amino acids 96-1265 (extracellular domain) of human Caspr2 Accession Number: NP_054860...
... its new line of Protein Standards, a ... use in mass spectrometry, molecular biology, and ... are high quality purified proteins for use ... electrospray ionization mass spectrometry (ESI-MS). For ...
Determin interaction of your protein with Echelons lipids...
Biology Products: