BISC208 Lecture Notes - Lecture 8: Saguaro, Camouflage, Trophic Cascade
16 May 2016
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Document Summary
Can sometimes have dramatic influence on victim populations. Can lead to adaptations to minimize fitness loss due to enemies. Cryptic coloration: coloration to blend in and avoid being seen. Mimicry: evlved strategy many species use to avoid predation by resembling other species that are toxic to predators. Batesian mimicry: a non-toxic prey evolving markings to look like a toxic prey so that predators avoid it. Mullerian mimicry: two or more toxic prey evolve to resemble eachother. Parasitism: parasite benefits at the expense of the other species. Some types of birds and other species are social parasistes (lay their eggs in existing nests of other animals) Oxpeckers land on rhinos or zebras and eat ticks and other parasites that live on their skin: this is mutualism. A spider building a web on a tree is an example of: commensalism. A food web consists of all the food chains in a single ecosystem.
