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:9/17/2014)... an EC-FP5 four-year project, delivering its first release in ... participations in several EC projects, as a part of ... (EU BON), to increase the general awareness of the ... general dissemination of the Fauna Europaea results, the ... novel e-Publishing tools to prepare data papers for all ...
(Date:9/17/2014)... plastic shopping bags and their environmental impact recently scored ... first statewide ban on the bags, and Governor Jerry ... bag industry is not yielding without a fight, according ... , the weekly newsmagazine of the American Chemical Society. ... that the anti-bag campaign logged its first small victory ...
(Date:9/17/2014)... have obtained the first partial genome sequence of an ... at the site of the Montsoriu Castle in Girona, ... closely related to today,s Iberian pig. Researchers also discard ... Iberian pigs. , The study, published in Heredity ... species, and particularly on that of the Iberian breed, ...
Breaking Biology News(10 mins):Contributions on Fauna Europaea: Data papers as innovative model on expert involvement 2Iberian pig genome remains unchanged after 5 centuries 2
... press release is available in German . ... at the Max Planck Institute for Developmental Biology in ... to identify neuronal correlates of behaviour by comparing maps ... different behaviour. They compared the pharyngeal nervous systems of ...
... had been in the business of trading wetlands rather than ... current guidelines for wetland restoration. Research from the University of ... over wetland restoration sites result in more environmentally positive outcomes. ... under the current policies if a wetland is scheduled for ...
... in The Journal of General Physiology ... results, indicating that the extracellular accumulation of potassium that ... thought. Muscle excitation involves the influx of sodium ... of ions that cross the muscle membrane with each ...
Cached Biology News:The neurobiological consequence of predating or grazing 2The neurobiological consequence of predating or grazing 3Trading wetlands no longer a deal with the devil 2Trading wetlands no longer a deal with the devil 3Study offers new insights into the mechanics of muscle fatigue 2
(Date:9/18/2014)... MX (PRWEB) September 18, 2014 September ... Mexico City, MX. ASEA is the manufacturer of the ... the skin care product, RENU28. , The Mexico ... Vice President Duvan Botero, and ASEA Field Leader Shawn ... holds a PhD in Atomic/Medical Physics from the University ...
(Date:9/17/2014)... - Oncothyreon Inc. (NASDAQ: ONTY ) today ... of its Common Stock and Series A Convertible Preferred ... Series A Convertible Preferred Stock is non-voting and convertible ... will be prohibited if, as a result, the holder ... of the Common Stock then outstanding. As part of ...
(Date:9/17/2014)... September 17, 2014 A biodegradable ... microorganisms such as bacteria, fungi, and algae into ... methane, biomass, inorganic compounds, carbon dioxide, and humus ... customer base and improved costs, biodegradable polymers are ... viable alternative to conventional polymers. Primary factors that ...
(Date:9/17/2014)... Intarcia Therapeutics, Inc. today announced the presentation ... cost and predictability of non-adherence in type 2 diabetes ... the European Association for the Study of Diabetes (EASD). ... Ph.D., of Analysis Group, Inc. presented data from the ... to characterize the prevalence of non-adherence and serial non-adherence, ...
Breaking Biology Technology:Announcing the ASEA Mexico Grand Opening Tour Beginning September 18th 2Oncothyreon Announces Proposed Public Offerings 2Growing Demand for Eco-Friendly Products Drives the Global Biodegradable Polymers Market, According to New Report by Global Industry Analysts, Inc. 2Growing Demand for Eco-Friendly Products Drives the Global Biodegradable Polymers Market, According to New Report by Global Industry Analysts, Inc. 3Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 2Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 3Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 4Intarcia Reveals New Insights At EASD Meeting Characterizing The Burden Of Poor Control And Non-Adherence To Anti-Diabetic Therapies 5
... Pioneering medical device company Signostics announced today ... Food and Drug Administration (FDA) for its ... http://www.newscom.com/cgi-bin/prnh/20090519/SF19276 )Signostics has developed a cost-effective device ... affordable for individual health professionals to use ...
... Inc. (TSX:SBS), specializing in the manufacture of high-value ... encouraging data from the Company,s Apo AI(Milano) development ... SemBioSys, plant-derived Apo AI(Milano) has exhibited the appropriate ... plaque volume. , New data from two of ...
... NANJING, China, May 19 /PRNewswire-Asia/ -- Simcere Pharmaceutical Group,(NYSE: ... of branded generic and,innovative anti-cancer pharmaceuticals in China, announced ... Officer. , Dr. Wang will ... and,innovative research projects. He will also participate in ...
Cached Biology Technology:Signostics Receives FDA Clearance for World's Smallest Ultrasound Product 2SemBioSys' plant-derived Apo AI(Milano) demonstrates encouraging biologic activity in seven preclinical models 2SemBioSys' plant-derived Apo AI(Milano) demonstrates encouraging biologic activity in seven preclinical models 3SemBioSys' plant-derived Apo AI(Milano) demonstrates encouraging biologic activity in seven preclinical models 4Simcere Pharmaceutical Group Appoints Dr. Peng Wang as Chief Scientific Officer 2
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Biology Products: