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Francuois Müller 2714916 Department of Biodiversity and Conservation Biology University of the Western Cape
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Native to Mekong basin but also found in Thailand and other neighboring countries of SE Asia. Has a labyrinth organ on head for air breathing Natural colouration in wild are dull greens and browns http://www.cev.washington.edu/files/screenshot2009-12- 11at2.33.07pm.png
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Evolved due to mating advantages it gives to the bearer Displayed during courtship Used in male-male intraspecific competition http://farm3.static.flickr.com/2004/2438572393_8483f 07470.jpg
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Male Siamese fighting fish are highly territorial. To keep its territory, it must win male-male confrontations. Aggression altered in the presence of an audience. http://advocacy.britannica.com/blog/advocacy/wp- content/uploads/betta11.jpg
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OBJECTIVE 1 DOES COLOUR (IN LAB REARED) Betta splendens PLAY A ROLE IN MALE-MALE AGGRESSION OBJECTIVE 2 HOW DOES THE PRESSENCE OF A PREDATOR AUDIENCE AFFECT THE AGGRESSIVE BEHAVIOUR BETWEEN TWO MALE Betta splendens
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Darker colour males will show aggression towards all colour males, but will be more aggressive towards other dark colour males The presence of a predator will reduce the aggressive displays shown by the fish, and when these displays have already started, the presence of the predator will bring the display to a stop
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OBSERVING AGGRESSION IN DIFFERENT COLOUR Betta splendens
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OBSERVING AGGRESSIVE BEHAVIOR OF THE Betta splendens IN THE PRESENCE OF A PREDATOR
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Dr. R Knight for providing the fish and tanks and for helping to set up the tanks. Prof. M Gibbons for lending the tank in which the predator fish will be kept.
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Herb BM, Biron SA & Kidd MR. 2003. Courtship by subordinate male Siamese fighting fish, Betta splendens: Their response to eavesdropping and naïve females. Behaviour 140(1): 71-78. Clotfelter ED, Curren LJ & Murphy CE. 2006. Mate choice and spawning success in the fighting fish Betta splendens: The importance of body size, display behaviour and nest size. Ethology 112: 1170-1178. Dzieweczynski TL, Bessler AM, Shelton DS & Rowland WJ. 2006. Effect of a dummy audience on male - male interactions in Siamese fighting fish, Betta splendens. Ethology 112: 127-133. Monvises A, Nuansaeng B, Sriwattanarothai N & Panijpan B. 2009. The Siamese Fighting Fish: well known generally but little known scientifically. Science Asia 35: 8-16 Alyan S. 2010. Male Betta splendens are equally aggressive towards neighbors and strangers. Journal of Ichthyology 50(11): 1066-1069. Google contributors. Betta fish (Internet) [cited 2011 Feb 15]. Available from: http:www.nationmaster.com/encyclopedia/Betta-fish
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