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:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/18/2017)... -- Socionext Inc., a global expert in SoC-based imaging and computing solutions, ... which features the company,s hybrid codec technology. A demonstration utilizing TeraFaces ... will be showcased during the upcoming Medtec Japan at Tokyo Big ... Las Vegas Convention Center April 24-27. ... Click here for an image of ...
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer ... first quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With ... with the challenge of how to continue to feed a growing nation. At the ...
(Date:10/9/2017)... ... October 09, 2017 , ... The Giving ... marijuana products targeting the needs of consumers who are incorporating medical marijuana into ... in Phoenix, Arizona. , As operators of two successful Valley dispensaries, The Giving ...
(Date:10/7/2017)... Arizona (PRWEB) , ... October ... ... 15 years’ experience providing advanced instruments and applications consulting for microscopy and ... in-house expertise in application consulting, Nanoscience Analytical offers a broad range of ...
(Date:10/7/2017)... 6, 2017  The 2017 Nobel Prize in ... Jacques Dubochet, Joachim Frank and ... cryo-electron microscopy (cryo-EM) have helped to broaden ... biology community. The winners worked with systems manufactured ... produce highly resolved, three-dimensional images of protein structures ...
Breaking Biology Technology: