Navigation Links
Fish choose their leaders by consensus
Date:11/13/2008

ize.

Now, the researchers find, the same is true in schools of stickleback fish making the decision about which leader to follow. Ward presented groups of three-spined sticklebacks with two fish replicas differing in characteristics, including size, fatness, shade, and spottiness, that reflect something about the health or fitness of the individual. For instance, a plump belly can indicate success in food gathering, while spots may indicate a parasitic infection.

He then ran trials in which one, two, four, or eight sticklebacks had to choose between two replica fish, one of which had been shown to be more attractive on the basis of the team's earlier studies. As group size increased, the fish made more accurate decisions, the researchers report, better discriminating subtle differences in the replicas' appearances.

In the majority of trials, either all or all but one of the fish followed the more attractive leader, they found. But the consensus method sometimes led the fish astray. In a substantial minority of trials, all or all but one of the fish followed the less attractive leadernot quite reaching Condorcet's philosophical ideal.

A simple quorum rule, in which an animal's probability of committing to a particular option increases sharply when a threshold number of other individuals have committed to it, proved sufficient to explain the observations, suggesting that animals can make accurate decisions without the need for complicated comparisons of the information they possess.

"Our results show rather that submission to peers and occasional cascades of incorrect decisions can be explained as a by-product of what is usually accurate consensus decision-making," the researchers wrote. Indeed, Sumpter said, humans make the same types of errors.

"A good example here is the stock exchange," he said. "Just now there is a lot of discussion about traders unable to make their own assessment and panic selling because ot
'/>"/>

Contact: Cathleen Genova
cgenova@cell.com
617-397-2802
Cell Press
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Australian frog species chooses not to put eggs in 1 basket
2. Male cyclists risk sexual problems if they don’t choose the right bike
3. Reproductive plasticity revealed: Neotropical treefrog can choose to lay eggs in water or on land
4. New folic acid seal helps women choose enriched grain foods to help prevent birth defects
5. Estuarine Research Federation chooses Springer as publishing partner
6. Species still have more viable offspring if they can choose their best mate
7. Institution of Chemical Engineers chooses Elsevier as publishing partner
8. In the war against diseases, nerve cells need their armor
9. Lead-flapping objects experience less wind resistance than their trailing counterparts
10. Red-eyed treefrog embryos actively avoid asphyxiation inside their eggs
11. Rare corals breed their way out of trouble
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/4/2014)... newly published research study examining only marketing directed ... fast food restaurants has found that the majority ... exposed to such marketing tactics. , Authored by ... colleagues, the study is the first to examine ... and exterior of fast food restaurants and its ...
(Date:11/4/2014)... VILNIUS, Lithuania , Nov. 4, 2014 /PRNewswire/ ... identification technologies, today announced that the latest version ... place in the Ongoing MINEX evaluation ... interoperability of fingerprint algorithms using the INCITS 378 ... a mandatory requirement in public tenders in ...
(Date:11/3/2014)... 2014  NeuroSigma ® , Inc. (NeuroSigma), a ... focused on commercialization of its non-invasive ... of neurological and neuropsychiatric disorders, announced today that ... a Notice of Allowance for Mexican Patent Application ... NeuroSigma and the Regents of the University of ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 2NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 3
... (UK) are to investigate how lethal viruses attack differently sized ... the door to new methods of pest control. The project, ... grain-infesting Indian meal moth ( Plodia interpunctella ) and a ... and sometimes not. Dr Steve Sait from the University ...
... Virginia Tech released today the results of a new rating ... the risk of concussions. One currently manufactured helmet received ... helmets received the very good "4-star" rating. ... first time researchers have provided the public with comparative test ...
... Palo Alto, CA Accurately calculating the amount of ... bringing products to our doorsteps is nearly impossible, but ... a commentary published online this week by Proceedings of ... Ken Caldeira and Steven Davis commend the work of ...
Cached Biology News:No safety in numbers for moths and butterflies 2Virginia Tech announces football helmet ratings for reducing concussion risk 2Virginia Tech announces football helmet ratings for reducing concussion risk 3Virginia Tech announces football helmet ratings for reducing concussion risk 4Consumption, carbon emissions and international trade 2
(Date:11/26/2014)... The announced sales of three healthcare units ... to expand in non-healthcare areas, says Kalorama Information. Siemens ... firm says that  Siemens is the third largest company ... the IVD market , with 5.5 billion in IVD ... would likely affect IVD market shares.  ...
(Date:11/26/2014)... MD (PRWEB) November 26, 2014 On ... invite the Baltimore and Washington D.C. science community to ... , The event, sponsored by the Protein Society, will ... UMBC’s University Center, Room 312. Through discussion, presentations ... and structural importance of proteins, their role in the ...
(Date:11/26/2014)... Morristown, NJ (PRWEB) November 25, 2014 ... it has officially joined the Morris County (New ... MCCC, which is a leading business organization in ... unique opportunity to further engage some key clients ... have operations in the geographic area. Membership enables ...
(Date:11/26/2014)... Continuing its award-winning streak, Nerium International, the ... Awards for outstanding creative achievement by its marketing and ... the organization’s top honor, in the Branding category for ... April of this year. The event showcased top speakers ... was awarded a Gold MarCom Award in the Special ...
Breaking Biology Technology:Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 3Nerium International™ Wins One Platinum, Two Gold MarCom Awards 2
... 2009 , , ARVADA, Colo., June 16 ... and responsibility to our shareholders, is addressing our recent ... Finance 2009, a Biotechnology, Medical Devices, and world public ... 4-5. , , Pharma Finance is an international ...
... Sunesis Pharmaceuticals, Inc. (Nasdaq: SNSS ), a ... oncology therapeutics for the treatment of solid and hematologic cancers, ... will be presenting at the Jefferies 3rd Annual Healthcare Conference ... 17, 2009. , , The live webcast of this ...
... SHANGHAI, June 16 /PRNewswire-Asia/ -- Sundia MediTech Company, a,Shanghai-based ... facility in Shanghai has passed the audit from a ... are praised,for providing good facilities and programs for the ... The inspection and audit took place in May. ...
Cached Biology Technology:GeneThera Extends its Reach Overseas 2Sundia's Animal Facility Passed Client and Government Inspection 2
... , Coated Capture Antibody: 12 x 8-well strips, ... mL of 2X concentrate , Beta Amyloid ... , Lyophilized Standard Diluent: 3 mL , Primary ... Antibody-HRP: 30 microL of concentrate , OPD Substrate: ...
Human Cell Line Slides...
Request Info...
HSV 1 IgM...
Biology Products: