Biology 2483A Study Guide - Coevolution, Myxoma Virus, Amphipoda

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Enslaver parasites- makes spider jump in water for its next life cycle stage. Makes spider make special web for it. Makes fly go on top leaves so that it can rain down on others to spread. Parasites are symbionts- live in or on other organisms. Comsumes the tissue/body fluids of the host. Only feed on 1 or few hosts in their life. Pathogens are parasites that cause diseases in the host. Parasites- specialized to one host species therefore so many parasite species (the diverge & speciate as they specialize) Many parasites can infest one host at a time. Ectoparasites- live on outer surface of host body. Endoparasites- live inside host tissue or cells (e. g. gi tract) E. g. animal- tapeworms- steal food from our intestine wall intracellular- y. pestis & mycobact tb. Plant- soft rot caused by fungi (eat from inside out) bacteria in stem where water and sugars flow. Ectoparasites- can disperse easily; more exposed to predators/enviro etc.

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