Navigation Links
The importance of being helpful -- Cooperative cichlids boost their own reproductive success
Date:5/15/2009

Subordinate individuals living within a group of vertebrates sometimes assist a more dominant pair by helping to raise the dominant pair's offspring and this has been shown to occur among subordinate female cichlids. Reporting in the online, open-access, peer-reviewed journal PLoS ONE, Dik Heg and colleagues at the University of Bern, Switzerland, and the Ohio State University, suggest that rather than engaging in an act of reciprocal altruism, these subordinate females actually benefit from the care-giving they offer as the more helpful subordinates are more likely to reproduce.

A number of hypotheses have been proposed to explain why subordinate female cichlids (Neolamprologus pulcher) often help to raise the offspring of unrelated dominant females (a form of alloparental care). Studying small groups of unrelated individuals, Heg and colleagues found no evidence that the helping behaviour of the subordinates was an example of reciprocal altruism, even though opportunities for reciprocation among cichlids are high, as the females lay eggs about every second weekthere was no correlation between the amount of care that dominants provided for their subordinates' broods and subordinates' alloparental care for dominants' broods.

The results of the PLoS ONE study suggest that while reciprocal altruism doesn't occur, the subordinate cichlids did receive reciprocal benefits in exchange for the care they provided for the offspring of dominant pairsa behaviour that enhanced their own chances of successfully reproducing. More specifically, a subordinate's helping behaviour ensures she gains access to the breeding substrate, on which she lays her eggs.

Heg and colleagues show that subordinates may be prepared to increase their care "payments" in return for enhancements in their own current reproductive potential (which they call the "pay-to-reproduce" hypothesis). Finally, subordinates may adjust their level of help according t
'/>"/>

Contact: Rebecca Walton
rwalton@plos.org
44-122-346-3333
Public Library of Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. The importance of gene regulation for common human disease
2. UNCCD recognizes importance of satellites for combating desertification
3. The importance of mangrove conservation in tsunami prone regions
4. Senate resolution shines spotlight on the importance of soils
5. American College of Medical Genetics affirms importance of newborn screening dried blood spots
6. Body part by body part, Sumatran tigers are being sold into extinction
7. Corporations can profit from being environmentally friendly
8. Loneliness undermines health as well as mental well-being
9. Issues at intersection of climate change and health impact global well-being
10. Promising new drug being evaluated as possible treatment option for fragile X syndrome
11. Breastfeeding boost IQ in infants with helpful genetic variant
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/5/2014)... , Dec. 4, 2014 Increased ... boosted investments in new testing and inspection technologies. ... given rise to a range of innovative test ... requirements of Generation Y, which is generally more ... a result, product development strategies of test equipment ...
(Date:12/3/2014)... , Dec. 2, 2014   Marvin Test ... innovative test solutions for military, aerospace, and manufacturing ... of its successful TS-900 PXI semiconductor test ... features of high-end systems to customers at a ... compared to traditional ATE. "Our ...
(Date:11/21/2014)... 2014  Earlier this year Donald Spector , ... one of the most prolific inventors in the world, ... from Smartphones to third party agencies. Spector envisioned this ... of the earliest known patents in this area. Now ... military, child care, elder care and hospital applications. This ...
Breaking Biology News(10 mins):Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4
... and water experts have converged at Nanyang Technological University ... research community on a scarce natural resource -- water. ... in the last fortnight as they attended the inaugural ... Last week, the university also hosted the 4th GlobalTech ...
... and Boston, MA. Wed. July 4, 2012 One of ... treatment. In the case of many forms of cancer, including ... cancer cells in the lab, but often produce only partial, ... the field of cancer research has been and remains: how ...
... researchers have discovered that recent climate change is causing leaves ... study, which is the first of its kind in the ... in climate. The results are published online today in ... Researchers analysed leaves from herbarium specimens of Narrow-leaf Hopbush ...
Cached Biology News:Wholly water -- students and scientists gather at NTU to discuss water problem 2Wholly water -- students and scientists gather at NTU to discuss water problem 3Wholly water -- students and scientists gather at NTU to discuss water problem 4Wholly water -- students and scientists gather at NTU to discuss water problem 5Tumor microenvironment helps skin cancer cells resist drug treatment 2Tumor microenvironment helps skin cancer cells resist drug treatment 3Tumor microenvironment helps skin cancer cells resist drug treatment 4Shrinking leaves point to climate change 2
(Date:12/24/2014)... 2014 According to Ross Selinger, President of ... ITRA Global, the national office market continues to be strong, ... is evidenced by the third quarter’s surprising 3.9% GDP, unemployment ... energy costs have held inflation down and the Fed is ... housing market remaining soft. , This solid economic news is ...
(Date:12/24/2014)... December 23, 2014 Nashville Fertility Center ... elected treasurer for the American Society for Reproductive Medicine ... and research in reproductive medicine. In his new ... on the executive board and will have a voice ... Hill has actively supported ASRM since 1984 when he ...
(Date:12/24/2014)... San Diego, CA (PRWEB) December 23, 2014 ... Contest where their Twitter followers can submit their ... for themselves and their lab mates. , For those ... beloved lab mates, the Pipette.com Holiday in the Lab ... encourages Pipette.com Twitter followers to send pictures ...
(Date:12/24/2014)... , Dec. 23, 2014 Vermillion, ... focused on gynecologic disease, announced today that investors ... , Birchview Fund LLC and several Vermillion directors ... unregistered shares of Vermillion,s common stock and warrants ... in a private placement.  Under ...
Breaking Biology Technology:ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5
... Inc. a global provider of comprehensive sample asset ... the bioscience industry, will host its Global Sample ... Expo (ICSE), on Wednesday, 26 October 2011, in ... include two 1-hour presentations from industry thought leaders ...
... Metabolex, Inc., a biopharmaceutical company focused on the discovery ... of metabolic diseases, announced today that Dr. Raymond Urbanski ... Urbanski brings extensive clinical development experience to Metabolex, including ... execution. Dr. Urbanski was the Vice ...
... Reportlinker.com announces that a new market research report ... US Microbiology Testing Market ... Comprehensive 1,087-page analysis of ... pertaining to the US microbiology laboratory practice, as ...
Cached Biology Technology:BioStorage Technologies to Host Global Sample Management Benchmarking Symposium at International Contract Services Expo 2Metabolex Appoints Raymond Urbanski M.D., Ph.D. to Position of Chief Medical Officer 2Metabolex Appoints Raymond Urbanski M.D., Ph.D. to Position of Chief Medical Officer 3US Microbiology Testing Market 2US Microbiology Testing Market 3US Microbiology Testing Market 4US Microbiology Testing Market 5US Microbiology Testing Market 6US Microbiology Testing Market 7US Microbiology Testing Market 8US Microbiology Testing Market 9US Microbiology Testing Market 10US Microbiology Testing Market 11US Microbiology Testing Market 12US Microbiology Testing Market 13US Microbiology Testing Market 14US Microbiology Testing Market 15US Microbiology Testing Market 16US Microbiology Testing Market 17US Microbiology Testing Market 18US Microbiology Testing Market 19
Purified anti-Fanconi anemia D2-Phosphorylated (Ser222)...
... Explorer processes up to 48 lanes, 24 ... input can be from either slab gel ... primer chemistries. The detection parameters in Explorer ... analyst consistency. We have built Explorer ...
... Quality ISO 9001:2000 Certified ... All Precedures Validated, SOP's Training ... Process for All Procedures GLP Documentation Upon ... one stop shopping point for all your ...
...
Biology Products: