HOME >> BIOLOGY >> NEWS
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' (a
'"/>

Contact: Suzanne Wu
swu@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
10-May-2006


Page: 1 2

Related biology news :

1. Risk of common vaginal infection linked to preterm birth appears higher for blacks
2. Antibody linked to MS significantly higher in spinal fluid of blacks
3. Children of smokers have more than 5 times higher levels of a nicotine toxin
4. Fatty acid catabolism higher due to polyphenol intake
5. Potential for malaria transmission higher than previously thought
6. Women in polluted areas at higher risk of cardiovascular disease
7. Patients respond well to first study to test higher doses of an anti-cancer drug
8. ASU will host conference on sustainability in higher education
9. For low-risk women, risk of death may be higher for babies delivered by cesarean
10. Genetic variant is associated with higher rate of premature delivery in African-American women
11. PSA test has higher accuracy for patients taking finasteride

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/16/2018)... ... October 16, 2018 , ... Nanomedical Diagnostics , ... new publication titled, “ Graphene-based Biosensor for On-Chip Detection of Bio-Orthogonally Labeled Proteins ... as a “new portable digital device for biosensing… that can be employed for ...
(Date:10/11/2018)... ... October 09, 2018 , ... ? ... market-ready technologies expedite their path to health system adoption and insurer reimbursement, ? ... across all major EHR applications, enabling them to focus on innovation not integration, ...
(Date:10/11/2018)... ... October 11, 2018 , ... ODSC Europe 2018 - ... 100% increase in attendance at the event from September 19-22. , As Europe’s ... intelligence sessions across 10 tracks and 4 days. Attendees were given key insights and ...
Breaking Biology News(10 mins):
(Date:10/2/2018)... (PRWEB) , ... October 02, 2018 , ... ... and Locus Bio-Energy Solutions™, LLC’s (Locus Bio-Energy) AssurEOR product line was chosen for ... Oil and Gulf Energy Information, honor leading innovations in upstream oil applications that ...
(Date:10/2/2018)... ... October 02, 2018 , ... ... this week that teams have initiated validation of standards and testing of procedures ... direction of Dr. Larry Kennedy, ACRES VP for Quality Management Systems and Chief ...
(Date:9/28/2018)... ... September 28, 2018 , ... ... to increase the availability of the GlycoMark test, the only FDA-cleared blood test ... the partnership, PMLS will promote and offer the GlycoMark test to its network ...
(Date:9/27/2018)... ... 26, 2018 , ... NDA Partners Chairman Carl Peck, ... and in vitro diagnostic device expert with more than 28 years of experience ... as an Expert Consultant. Her experience includes leadership roles in regulatory strategy, quality ...
Breaking Biology Technology:
Cached News: