Search results
Results from the WOW.Com Content Network
For sharks, normal behaviour is considerably different than the exaggerated appearance of the agonistic display. [6] [2] [1] A shark which is in distress will behave in a manner that is easily recognizable, due to the sheer oddity of the sequence of movements and torsional elements characteristic of agonistic displays - juxtaposed to normal ...
Gaping is part of the shark agonistic display, and is also found in snakes such as the cottonmouth, and in birds ranging from seagulls to puffins to roosters. A number of species of bird use a gaping, open beak in their fear and threat displays. Some augment the display by hissing or breathing heavily, while others clap their beaks. [2]
The "hunch" threat display of the grey reef shark is the most pronounced and well-known agonistic display (a display directed toward competitors or threats) of any shark. Investigations of this behavior have been focused on the reaction of sharks to approaching divers, some of which have culminated in attacks.
Display behaviour is a set of ritualized behaviours that enable an animal to communicate to other animals (typically of the same species) about specific stimuli. [1] Such ritualized behaviours can be visual, but many animals depend on a mixture of visual, audio, tactical and chemical signals. [ 1 ]
A courtship display is a set of display behaviors in which an animal, usually a male, attempts to attract a mate; the mate exercises choice, so sexual selection acts on the display. These behaviors often include ritualized movement (" dances "), vocalizations , mechanical sound production, or displays of beauty, strength, or agonistic ability .
If threatened or challenged, they may perform an agonistic display: the shark swims towards the threat and then turns away, while rolling from side to side, lowering its pectoral fins, tilting its head and tail upwards, and making sideways biting motions. The entire sequence lasts around 25 seconds.
Agonistic behaviour is a result of evolution, [5] and this can be studied in a number of species facing different environmental pressures. Though agonistic behaviours can be directly observed and studied in a laboratory setting, it is also important to understand these behaviours in a natural setting to fully comprehend how they have evolved and therefore differ under different selective ...
The postures become more exaggerated as the danger perceived by the shark increases. |Source=own work |Date=6 March 2007 |Author=Chris_huh |other_versions=Shark threat disp File usage The following pages on the English Wikipedia use this file (pages on other projects are not listed):