Search results
Results from the WOW.Com Content Network
In ecology, crypsis is the ability of an animal or a plant [1] to avoid observation or detection by other animals. It may be a predation strategy or an antipredator adaptation . Methods include camouflage , nocturnality , subterranean lifestyle and mimicry .
Predators need not locate their host directly: Kestrels, for instance, are able to detect the faeces and urine of their prey (which reflect ultraviolet), allowing them to identify areas where there are large numbers of voles, for example. This adaptation is essential in prey detection, as voles are quick to hide from such predators.
where N1 and N2 are the abundance of prey types 1 and 2 in the environment and P1 and P2 are the abundances of the same prey types in the predator's diet. c is the preference for prey type 1. If the value of c increases over time with N1/N2, prey switching is presumed to occur. The opposite of prey switching is when a predator eats ...
A wide range of animals, e.g. lizards, birds, rodents, and sharks, behave as if dead as an anti-predator adaptation, as predators usually take only live prey. [ 15 ] In beetles, artificial selection experiments have shown that there is heritable variation for length of death-feigning.
Some predators, like the leopard, and some potential prey like the Egyptian nightjar, use disruptive patterns. [4] Disruptive patterns are defined by A. Barbosa and colleagues as "characterized by high-contrast light and dark patches, in a nonrepetitive configuration, that also provide camouflage by disrupting the recognizable shape or ...
A particular concern of companies is the use of copyrighted material by another company in mods, such as a Quake "Aliens vs. Predator" mod, which was legally contested by 20th Century Fox. [12] Some companies, such as Nintendo, discourage modding through aggressive litigation, strict EULAs and Terms and Conditions for their property. [43]
Predator–prey coevolution often makes it unfavorable for a predator to consume certain prey items, since many anti-predator defenses increase handling time. [16] Examples include porcupine quills, the palatability and digestibility of the poison dart frog, crypsis, and other predator avoidance behaviors. In addition, because toxins may be ...
Tonic immobility occurs after the predator has detected and or made contact with the prey, and is likely used to prevent further attack by the predator or consumption of the prey. [ 1 ] [ 2 ] Because tonic immobility occurs later in the predator attack sequence, it is considered a secondary defense mechanism and is therefore distinct from freezing.