BIOL 351 Lecture Notes - Lecture 14: Intraguild Predation, Intraspecific Competition, Asymptote
14 Mar 2017
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Document Summary
Predation is the consumption of one living organism (prey) by another organism (predator). The prey is alive when the predator first attacks it. True predators kill their prey more or less immediately after attacking them. eg: tigers, lions, eagles, seed-eating rodents and ants, etc. Grazers remove only part of the plant (prey) they feed on, but do not destroy it entirely. Parasites consume part of their prey (host), are harmful but rarely lethal in short term, attacks concentrated on few individuals during lifetime, specialized. Parasitoids are insects that lay eggs in, on or near a host that is then consumed by larvae (eventually lethal). These models predict oscillations of predator and prey populations. Model involving paired equations, one for the predator (or cosumer p) nad one for the prey (n), but where both interact. We assume that initially in the absence of a predator, the prey population increase exponentially.
