BIO 200 Lecture Notes - Lecture 28: Camouflage, Aposematism, Paramecium
22 Dec 2016
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Document Summary
Herbivores eat plants and can be predatory or parasitic. Detritivoures are consumers that don"t control their prey abundance (decomposers) Many mechanisms of coexistence: refuges, cycling, few predators, generalist predators. Predation avoidance is a very strong predation force. Crypsis: hiding in plain sight, camo, cryptic coloration, object mimicry. Chemical defenses: bombarder beetle, toxicity, nudibranchs. Warning (aposematic) coloring is common: skunk bees. Batesian mimicry: non-poisonous species mimics the looks of poisonous species. Mullerian mimicry: both species are poisonous and they try to mimic each other. Prey avoid predation behaviorally: alarm calling. Confuse predators and lead them away from vulnerable individuals: running, herds. Predator satiation: time the exact time of birth, all species in same location give birth at roughly the same time, fill up the predator so that they can"t eat all of them. Sessile plants and animals use armor and toxicity.
