Navigation Links
Fish can determine their social rank by observation alone, study finds

A male fish can size up potential rivals, and even rank them from strongest to weakest, simply by watching how they perform in territorial fights with other males, according to a new study by Stanford University scientists. The researchers say their discovery provides the first direct evidence that fish, like people, can use logical reasoning to figure out their place in the pecking order.

The study, published in the Jan. 25 edition of the journal Nature, is based on a unique experiment with cichlids (SIK-lids), small territorial fish from Africa. "In their natural habitat, male cichlids are constantly trying to ascend socially by beating each other up," said study co-author Russell D. Fernald, professor of biological sciences at Stanford. "It would be really valuable for them to know in advance who to pick a fight with."

The Nature experiment was designed by lead author Logan Grosenick, a graduate student in statistics at Stanford, and Tricia S. Clement, a former postdoctoral fellow. Their goal was to determine whether territorial fish use a type of reasoning called "transitive inference," in which known relationships serve as the basis for understanding unfamiliar ones.

"Transitive inference is essential to logical reasoning," Fernald explained. "It's something that kids generally figure out by age 4 or 5--Mary is taller than Fred, Fred is taller than Pete, therefore Mary is taller than Pete. It's been demonstrated in primates, rats and some bird species, but how and why it evolved in animals is a matter of debate."

Aggressive bouts

In the experiment, the Stanford team used a popular laboratory fish called Astatotilapia burtoni, one of many cichlid species that inhabit Lake Tanganyika in eastern Africa. A. burtoni males are extremely territorial and regularly engage in aggressive fights, the outcome of which determines who gets access to food and mates.

"Males that repeatedly lose fights are unable
'"/>

Source:Stanford University


Page: 1 2 3 4

Related biology news :

1. Newly-discovered class of genes determines ?and restricts ?stem cell fate
2. Biologists determine genetic blueprint of social amoeba
3. USC researchers determine mechanism of action of chemotherapy drug
4. Hidden sponges determine coral reefs nutrient cycle
5. Weapon performance determines mating success in the collared lizard
6. Scientists determine structure of enzyme that disrupts bacterial virulence
7. New technique helps researchers determine amino-acid charge
8. Researchers unlock how cells determine their functions
9. Researchers map out networks that determine cell fate
10. Genetic tug of war determines sexual differentiation
11. Structure determined for p53 tumor suppressor protein as bound to DNA for anti-cancer activity
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Fish can determine their social rank observation alone study finds

(Date:12/17/2014)... -- Valencell, a leader in performance biometric data sensor ... leaders such as Intel, Jabra, Atlas, and Scosche to ... These products will be showcased at CES 2015, taking ... . "Our partners choose PerformTek biometrics, ... with the clinical data to back it up," said ...
(Date:12/11/2014)... 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition of ... 2015-2019"  report to their offering. ... advances in technology. With continuous advances in technology, ... the latest standard that meets the needs and ...
(Date:12/10/2014)... , Dec. 8, 2014 You,ve been here ... account but can,t remember your password, site key or the ... was your first grade teacher? Today, ... the app that will finally put an end to ... 1U TM . 1U leverages a user,s smartphone ...
Breaking Biology News(10 mins):Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
... recently published their joint findings that fatal prion diseases, which ... Findings published this month in the peer-reviewed journal, ... to seven months before an animal shows physical signs of ... brain was being eradicated. This member of the prion family ...
... have demonstrated, for the first time, a graphene-based ... cells and capable of recording the electrical signals ... for further investigation of a promising new material. ... leading contender for future biomedical applications requiring a ...
... Take a Petri dish containing crude petroleum and it ... make up the fossil fuel. Sprinkle mushroom spores over the ... an incubator, and surprise, the petroleum and its smell will ... professor of biological sciences and researcher at the University of ...
Cached Biology News:Medical researchers in Canada and the US discover hidden side of prion diseases 2Biocompatible graphene transistor array reads cellular signals 2Biocompatible graphene transistor array reads cellular signals 3Petroleum-eating mushrooms 2Petroleum-eating mushrooms 3Petroleum-eating mushrooms 4
(Date:12/19/2014)... Reports from CDC show approximately 117 ... or more chronic health conditions - including cardiovascular disease, ... of these diseases, but may not eliminate the severe ... implanted nerve stimulation devices today offer relief, they require ... induce side effects. , To eliminate the need ...
(Date:12/19/2014)... With only 2 weeks left of 2014, ... Biohit products . The product specials include Buy 1 ... Trade-in Program, and free pipette tips. , Sartorius mLINE ... world. They are ideal for lab technicians performing long ... ,     Full volume range of 0.1 uL to 10 ...
(Date:12/19/2014)... , Dec. 18, 2014 Relmada Therapeutics, Inc. ... the treatment of chronic pain, announced the results of ... "This was a transformational year in Relmada,s history ... for our company," said Sergio Traversa , chief ... have executed on key financial, human resource and clinical ...
(Date:12/17/2014)... Achim Noack has been named global vice president ... position, Noack will assist Jerry Stoller, CEO and president ... and supervise global marketing management and implementation of new ... and experience in the crop protection industry,” says Jerry ... thinking will be a great asset for Stoller Group, ...
Breaking Biology Technology:Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2
... BARCELONA, Spain , June 14 Data ... in Barcelona , highlights the impact of febrile ... patients. The IMPACT NHL study showed that unplanned hospitalisations, ... to suboptimal relative dose intensity (RDI) of chemotherapy were ...
... ... Mogil, an internationally-renowned leader in pain research, will be presenting “What’s Wrong with ... be held October 4-5, 2010 in Philadelphia, Pennsylvania. , ... Minneapolis, MN (PRWEB) June 10, ...
... ... oldest buildings on earth and a “fascinatingly weird” ancient culture. , ... (PRWEB) June 11, 2010 -- U.S. nonprofit The ... a simple introduction to megalithic architects in Frequently Asked Question format. With content drawn ...
Cached Biology Technology:New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 2New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 3New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 4New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 5New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 6New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 7New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 8New Data Confirms the Negative Impact of Febrile Neutropenia in Patients With Non-Hodgkin Lymphoma Receiving R-CHOP Chemotherapy 9Jeffrey Mogil to Speak on Animal Models of Pain at Arrowhead's 4th Annual Pain Therapeutics Summit 2New tool for exploring the ancient world. 2
... suit the widest possible range of sample ... Labware carriers can be placed at any ... for the user, thanks to a numbered ... guided into position. This allows easy removal ...
... Sac-Cel (Second Antibody Coated CELlulose) was developed ... of Dartford, Kent, one of the earliest ... IDS acquired the product range in 1987. ... clinical biochemists developing their own "in house" ...
... N,N- bis- (3-D-Gluconamidopropyl)deoxycholamide ... analog of CHAPS and CHAPSO. Has reduced ... anion exchange chromatography on DEAE-cellulose. Aggregation number: ... Soluble in H 2 O. Aggregation number ...
... N-Dodecyl-N,N-(dimethylammonio)butyrate White crystalline solid. ... to DDMAU (Cat. No. 252005) but differing ... More efficient for the extraction of mycoplasma ... Purity: ≥98% by TLC. Soluble ...
Biology Products: