Navigation Links
Helping in a selfish world

Billions of people tuned into recent Live 8 concert broadcasts, some just for the music, others to support the altruistic cause spearheaded by former Boomtown Rat, Sir Bob Geldof. In today's rat-race climate, what makes some of us look out for each other, while others look out for themselves?

According to evolutionary theory, natural selection has designed individuals to behave selfishishly; selfish individuals are likely to end up with more resources and therefore more offspring. But many species (including humans, some rock musicians, politicians, and everyday citizens among them) do co-operate.

Traditionally, scientists have explained the evolution of co-operation using the idea of kin selection. Help to relatives (who share your genes) makes sense if it means your relative will have more children who will carry your genes into the next generation. Therefore, relatives are expected to help more. However, in a study published today in the Proceedings of the Royal Society, McMaster University researchers show that in certain situations the reverse is true: unrelated individuals help more.

Sigal Balshine, associate professor of in the Department of Psychology, Neuroscience & Behaviour at McMaster and her graduate student Kelly Stiver have been studying a small species of African cichlid fish that live in groups with a dominant breeding pair and non-breeding helpers. All individuals (helpers and breeders) co-operate to defend the young and the territory. The researchers combined behavioural observations with genetic analyses of relatedness in these fish groups and found that under specific ecological and demographic conditions unrelated individuals must "pay-to-stay" in the group and therefore may help more.

"This fish species is particularly interesting because breeders and helpers are not close relatives, but they co-operate nevertheless," says Balshine. "We think that unrelated individuals may be required to "pay more" by doing m
'"/>

Source:McMaster University


Page: 1 2

Related biology news :

1. Researchers Closer To Helping Hearing-Impaired Using Stem Cells
2. Harnessing microbes, one by one, to build a better nanoworld
3. Scientists must offer solutions for conserving tropical forests in a rapidly changing world
4. HIV drug resistance increasing in UK and among highest in the world
5. Mapping the protein world
6. Too mellow for our predatory world
7. Replacing insulin is top-ranked breakthrough foreseen for health in developing world
8. Fantastic Voyage: A new nanoscale view of the biological world
9. Unique gene regulation gives chilly bugs survival advantage at bottom of the world
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Helping selfish world

(Date:7/31/2015)... de julio de 2015 BGI llevará a cabo ... del 22 al 25 de octubre de 2015, en ... conferencia celebra su décimo aniversario este año. Desde su ... de las reuniones anuales más influyentes del mundo en ... las conferencias científicas más dinámicas, entusiastas y amenas. ...
(Date:7/31/2015)... , 31. Juli 2015 Die 10. internationale Konferenz ... BGI veranstaltet und findet vom 22. bis 25. ... , statt. Die Konferenz feiert ... Start 2006 ist die ICG weltweit zu einem ... Sie ist eines der dynamischsten, enthusiastischsten und angenehmsten ...
(Date:7/27/2015)... Calif. , July 27, 2015  Synaptics ... of human interface solutions, today announced that Huawei ... touchscreen solution for its stylish smartwatch. Huawei ... its proven reliability, low power and highly responsive ... wet finger. Huawei designers also required a classic ...
Breaking Biology News(10 mins):La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 3Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 2Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 3Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3
... molecular mechanism in the liver that explains, for the ... and trans-fatty acids causes elevated blood levels of cholesterol ... and certain cancers. , In the Jan. 28 issue ... that the harmful effects of saturated and trans fats ...
... treated with radical mastectomy and adjuvant chemotherapy, the addition ... few long-term toxic effects, according to a 20-year follow-up ... 19 issue of the Journal of the National Cancer ... was designed to determine the effect on survival of ...
... a recent U.S. study, investigators in Japan found no ... form of high blood pressure, as reported in the ... now available online. , The researchers reported that they ... also known as the Kaposi's sarcoma virus, in the ...
Cached Biology News:Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats 2Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats 3Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down 2Association of herpesvirus with lung disorder questioned 2
(Date:7/29/2015)... July 29, 2015 US-Australian drug discovery company, ... confirmed it is committed to progressing its ground-breaking technology ... practicable and to ensure the Company delivers the best ... Iain Ross , said the Company currently had ... pre-clinical programs, discovery programs and academic partnerships and initiatives, ...
(Date:7/29/2015)...  HealthSouth Corporation (NYSE: HLS ), one ... services, offering both facility-based and home-based post-acute services, ... second quarter ended June 30, 2015. ... growth in both segments and an 11.0% increase ... and Chief Executive Officer of HealthSouth. "While reported ...
(Date:7/29/2015)... , July 29, 2015 ... announced the addition of the "Global Biosimilars ... offering. The Global Biosimilars Market, 2015 ... the rapidly growing biosimilars market. With the blockbuster ... to minimize costs, biosimilars are being viewed as ...
(Date:7/29/2015)... 2015  Therapath Neuropathology ( www.Therapath.com ), a ... VA and Military Medical centers both domestically and ... and Sweat Gland Nerve Fiber Density (SGNFD) for ... ). Demonstration of a reduction ... punch skin biopsy is a highly sensitive and ...
Breaking Biology Technology:Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10HealthSouth Reports Results for Second Quarter 2015 2HealthSouth Reports Results for Second Quarter 2015 3HealthSouth Reports Results for Second Quarter 2015 4HealthSouth Reports Results for Second Quarter 2015 5HealthSouth Reports Results for Second Quarter 2015 6HealthSouth Reports Results for Second Quarter 2015 7HealthSouth Reports Results for Second Quarter 2015 8HealthSouth Reports Results for Second Quarter 2015 9HealthSouth Reports Results for Second Quarter 2015 10HealthSouth Reports Results for Second Quarter 2015 11HealthSouth Reports Results for Second Quarter 2015 12HealthSouth Reports Results for Second Quarter 2015 13HealthSouth Reports Results for Second Quarter 2015 14HealthSouth Reports Results for Second Quarter 2015 15HealthSouth Reports Results for Second Quarter 2015 16HealthSouth Reports Results for Second Quarter 2015 17HealthSouth Reports Results for Second Quarter 2015 18HealthSouth Reports Results for Second Quarter 2015 19HealthSouth Reports Results for Second Quarter 2015 20HealthSouth Reports Results for Second Quarter 2015 21HealthSouth Reports Results for Second Quarter 2015 22HealthSouth Reports Results for Second Quarter 2015 23HealthSouth Reports Results for Second Quarter 2015 24HealthSouth Reports Results for Second Quarter 2015 25HealthSouth Reports Results for Second Quarter 2015 26HealthSouth Reports Results for Second Quarter 2015 27
... Gen-Probe Incorporated,(Nasdaq: GPRO ) announced today that ... and chief operating officer, effective March 1, 2008., ... of 2007 as executive vice,president and chief operating ... research and development, manufacturing, and,sales and marketing., ...
... be held on Thursday, February 21, 2008 at 5:00 ... (Eastern) / 9:00 pm (Beijing/Hong Kong), SHENYANG, China, ... biotechnology company focused on researching,developing, manufacturing and marketing biopharmaceutical ... for the fourth,quarter and full year ended December 31, ...
... Products,Corp. (OTC Bulletin Board: TKER), a manufacturer and ... today,reported that it has installed its equipment to ... new plant operated by one of the,top 10 ... test of the,application to gauge its effectiveness, during ...
Cached Biology Technology:Carl Hull Named President and Chief Operating Officer of Gen-Probe 2Carl Hull Named President and Chief Operating Officer of Gen-Probe 33SBio Inc. Schedules 2007 Fourth Quarter and Full Year Earnings Release on Wednesday, February 20, 2008 2Tasker Products Installs Scalder Application at New Poultry Processor's Facility 2Tasker Products Installs Scalder Application at New Poultry Processor's Facility 3
...
Rubeola (Measles) Antigen Preservative: No Preservatives...
One-step, microplate or cuvet, colorimetric, linear detection range 8 mg/dL to 300 mg/dL. Procedure: 5 min....
Homo sapiens jumping translocation breakpoint...
Biology Products: