Navigation Links
The faster they come
Date:6/27/2009

Being the neighbourhood bully has its obvious advantages, but it becomes useless if your authority is continuously being challenged. In many animal species, however, stable hierarchies are routinely formed in which some individuals seem to slip naturally into their dominant role whereas others resign themselves to play the part of lowly subordinates. But why do the latter embrace this fate so readily instead of putting up a fight? A research team from the University of Sydney is trying to find the answer to this question by studying the interactions between male mosquitofish to see if their behavioural strategy can be traced down to their physical skills.

When the speed of escape in response to an attack was measured, the researchers found that subordinate fish were significantly faster than the dominant ones. "This is particularly interesting because we predicted the opposite: that dominant fish were the ones that would prove to be more athletic" explains Dr. Frank Seebacher, who led the research team. "Our data indicate either that there may be a training effect because subordinate fish have to escape quickly and often, or that slower fish become more aggressive because they cannot manoeuvre quickly." The researchers also analysed whether damage to the tail and fins may affect the social position of a given individual, and found that, indeed, aggressive behaviours tend to decline as fin damage sustained in fights accumulates. In other words: if a male has to fight too often to maintain his dominant status, he will probably end up losing it in the end. These results will be presented by Elektra Sinclair at the Society of Experimental Biology Annual Meeting in Glasgow on Sunday 28th June 2009.

The scientists are currently trying to better characterize the physiological differences between the two groups to find out whether they are hereditary or acquired. They are also planning to address this question by conducting breeding studies designed to distinguish between underlying genetic differences in locomotor performance and plastic changes occurring during the lifetime of the individual as a result of its social status. Ultimately, their aim is to determine if relative position within the stable hierarchy is largely influenced by their inherited genes, or if each generation has to work it out all over again.


'/>"/>

Contact: Cristian C. A. Bodo
Cristian.Bodo@kcl.ac.uk
44-794-258-7047
Society for Experimental Biology
Source:Eurekalert

Related biology news :

1. New wheat disease could spread faster than expected
2. Shellfish and inkjet printers may hold key to faster healing from surgeries
3. New open-source software permits faster desktop computer simulations of molecular motion
4. Ocean growing more acidic faster than once thought
5. New type of vaccines deliver stronger and faster immune response
6. Emissions rising faster this decade than last
7. TGen investigators devise faster, cheaper way of analyzing the human genome
8. Big-brained animals evolve faster
9. Wasps and bumble bees heat up, fly faster with protein-rich food
10. Establishing faster-growing, durable football fields
11. New 3-D test method for biomaterials flat out faster
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/6/2016)... Ind. , Dec. 6, 2016  Zimmer Biomet Holdings, ... it has priced an offering of €500.0 million principal amount ... million principal amount of its 2.425% senior unsecured notes due ... expected to occur on December 13, 2016, subject to the satisfaction ... an annual basis. The ...
(Date:12/6/2016)... Valencell , the leading innovator in performance biometric ... consecutive year of triple digit growth for its PerformTek ... 360 percent increase in companies who have acquired Valencell ... sales of its wrist and ear Benchmark™ sensor systems, ... hearables for fitness and healthcare applications. ...
(Date:12/6/2016)... 2016 Securus Technologies, a leading provider ... public safety, investigation, corrections and monitoring, and the ... five (5) year funding commitment by Securus to ... rehabilitation and reentry support to more inmates and ... 2004, the Prison Entrepreneurship Program (PEP) is an ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... Dec. 7, 2016  Muse bio, a privately-held company ... announced that Dr. Kevin Ness has been ... of Directors. Kevin succeeds Muse bio,s ... company,s Chief Science Officer as well as remains Slade ... the BioDesign Center at the RAS Energy Institute at ...
(Date:12/7/2016)... YORK and ANN ARBOR, Mich. ... privately held biopharmaceutical company developing breakthrough immune modulatory medicines, ... trial of the Company,s lead therapeutic candidate, LYC-30937- E ... is often a debilitating skin disease that is estimated ... the United States , with approximately 1.5 ...
(Date:12/7/2016)... SAN DIEGO , December 7, 2016 ... published in the International Journal of Molecular Sciences a team ... 1 ] have demonstrated that expression of ... prognoses.  These scientists tested for NR2F6 in patient,s cervical cancer ... of their tumors. "This is an interesting study ...
(Date:12/7/2016)... Boston, MA and Azusa, CA (PRWEB) , ... ... ... commercial provider of distributed wastewater treatment and resource recovery solutions for industrial facilities, ... Brewing Company , will be the first to use Cambrian’s novel water-energy purchase ...
Breaking Biology Technology: