Navigation Links
The higher the hierarchy, the greater the aggression

Individual variation in social behavior is one of the most striking features of cooperative animal societies. In a new study from the June issue of American Naturalist, Michael A. Cant (University of Cambridge), Justine B. Llop (University of Cambridge), and Jeremy Field (University College London) investigate the extent to which differences in aggressive behavior within a cooperative society can be explained by "inheritance rank"--the likelihood that an individual will get to mate successfully in that society based on their rank--or place in the social hierarchy. They can only pass on their genes when they reach the top of the hierarchy, usually after those ahead of them in the rank have died and they have inherited the right to reproduce.

"Certain group members inflict or receive many more acts of aggression than others. In some cases, these acts (which include bites, shoves, mounts, and charges) appear to regulate cooperative activity in the group by activating lazy workers, for example, or punishing defectors," write the researchers.

The researchers developed two simple mathematical models that predicted that, if inheritance rank mattered in a cooperative society, then the rates of aggression would be highest toward the front of the queue and that the aggression would increase as the time available to inherit the ability to breed ran out in seasonal animals. These predictions were tested on field colonies of the paper wasp Polistes dominulus by recording aggression between all group members and then repeatedly removing the dominant wasps.

When individuals were experimentally promoted in rank, their aggression toward subordinates increased radically, suggesting that aggression depends on rank rather than vice versa and that particularly high levels of aggression are used by newly promoted dominants to establish their status. "We found that rates of both aggressive 'displays' (aimed at individuals of lower rank) and aggressive 'tests' (ai
'"/>

Source:University of Chicago Press Journals


Page: 1 2

Related biology news :

1. Climate model links higher temperatures to prehistoric extinction
2. Pregnant women at higher risk for HIV, Uganda study finds
3. GM crop that holds on to its seeds offers higher yields
4. Navigating the brain for sense of direction as paradigm for higher cognitive functions
5. Virginia Tech helping to develop higher quality, disease-resistant wheat varieties
6. Avian flu transmission to humans may be higher than thought
7. Chromosomal abnormalities in sperm higher after vasectomy reversal
8. Metal homeostasis research in plants will lead to nutrient-rich food and higher yielding crops
9. Indicators for risk of heart disease are higher in passive smokers
10. Greasing interferons gears may pave way to greater therapeutic benefits, fewer side effects
11. Forsyth scientists gain greater understanding of how embryos differentiate left from right
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The higher the hierarchy the greater the aggression

(Date:10/15/2014)... Gutenberg University Mainz (JGU) as a full member, ... maintain a significant nationwide standing in the field ... Johannes Gutenberg University Mainz as a full member ... national and international competition for the best minds ... be proud that Mainz University has been recognized ...
(Date:10/15/2014)... linked increased resistance to bacterial pneumonia in female mice ... estrogen. , Females are naturally more resistant to respiratory ... has shown that increased resistance to bacterial pneumonia in ... synthase 3 (NOS3). They also show that this enzyme ... sex hormone estrogen. , The team, lead by Professor ...
(Date:10/15/2014)... Geneticist Fred Alt will be awarded the 44th Rosenstiel ... University for his pioneering research exploring the mechanisms of ... and cancer cells. Alt is the second alumnus to ... the Nobel Prize in 2003. , Alt is the ... Genetics at Harvard Medical School and an investigator at ...
Breaking Biology News(10 mins):Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2
... bonds that tie a mother to her newborn may be ... deliver by cesarean section, according to a study published by ... Journal of Child Psychology and Psychiatry . ... James Swain, M.D., recruited two groups of parents from postpartum ...
... This press release is available in German . ... checks above all at airports has been increased ... protection of passengers. Possibilities for new and safe methods of ... can be used for this purpose, however, it has to ...
... into the mating and nesting practices of a common ... males sequentially the highest recorded of any vertebrate. ... Biological Sciences, has researched the frog species Bibron,s toadlet ... field trip, discovered a new behaviour undetected in a ...
Cached Biology News:Natural childbirth linked to stronger baby bonding than C-sections 2Checking people at airports -- with terahertz radiation 2Australian frog species chooses not to put eggs in 1 basket 2
(Date:10/22/2014)... -- Research and Markets  has announced the addition ... Application, Geography - Global Analysis and Forecast (2014 - ... Organic electronics, also called as polymer electronics or plastic ... with small conductive molecules and electrically conductive polymers. It ... are carbon based, made using synthetic strategies developed in ...
(Date:10/20/2014)... Convey Computer , the leader ... Iowa State University won first place in the ... HC-2ex, the team’s solution achieved the highest overall performance ... second place finisher. , Experts from all segments of ... long challenge, using a variety of design tools, hardware ...
(Date:10/20/2014)... -- GenVec, Inc. (NASDAQ: GNVC ) today announced the ... board of directors effective on October 24, 2014.   Dr. Horovitz ... its chairman from June 2006 to November 2013.  During his ... and Audit Committees of the board.  "We ... service to GenVec, and its stockholders," said Wayne T. ...
(Date:10/20/2014)... 20, 2014 Local veterinary surgeon, Dr. ... investigational study of donor stem cells for dogs with ... therapy and has performed clinical stem cell therapy for ... to determine if a single injection of donor stem ... help reduce pain and inflammation in the treated joints. ...
Breaking Biology Technology:Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3Zola P. Horovitz To Retire From GenVec Board 2Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... INDIANAPOLIS, Feb. 8 Semafore Pharmaceuticals Inc.,today announced ... and Ullrich Schwertschlag, M.D., Ph.D., chief medical officer,will ... programs at,2:45 p.m. EST on Wednesday, Feb. 13, ... New York City., The update will include ...
... onTargetjobs, the leading,niche Internet job ... of,RegionalHelpWanted.com, a network of over 350 ... is the parent company of BioSpace.com, ... career services to the biotechnology, pharmaceutical,hospitality, ...
... Remain as Advisor to Company, FRAZER, Pa., Feb. ... Executive Vice President, General Counsel &,Secretary, John E. Osborn, ... March 31. Mr. Osborn has agreed to remain as ... matters., "John has been an invaluable member of ...
Cached Biology Technology:Semafore to Present at BIO CEO & Investor Conference 2onTargetjobs Announces Acquisition of RegionalHelpWanted.com 2Cephalon General Counsel John E. Osborn to Resign Position 2Cephalon General Counsel John E. Osborn to Resign Position 3
A Highly Purified, Cost-Effective Taq DNA Polymerase...
... , Ellman's reagent *M: ... *Storage: RT, When an enzyme-catalyzed reaction ... present in the substrate, it may be possible ... with the product to form a chromophore. The ...
Cag-A (IgG) -Ab EIA Sample Size: 10 l...
... a recombinant human protein produced in E. coli ... RNase A type enzymes. The mode of ... in a 1:1 ratio. The enzyme has been ... and cell types. Addition of the ribonuclease inhibitor ...
Biology Products: