01:146:328 Lecture Notes - Lecture 2: Eugene Odum, Parasitoid, Overdispersion
2 Oct 2018
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1: symbiosis, eugene odum - effects on population growth, commensalism, phoresis, mutualism, exploitation, predator, parasitoid, micropredator, parasite, animal associations. Parasitism: parasite definition, what organisms are parasites and which are not, types of parasites, hosts, definitive, intermediate, direct, indirect, overdispersion - negative binomial, life cycles. Symbionts 2 different spp that are living in close associated. Does not tell about the nature (good or bad) Classified interactsion based on the effects of the species population growth/ +, - , 0 (no effect: explain commensalism. (+ / 0) One partner benefits, the other has no effect. Ex: cattle egrets and cattle: what type of dependency exists between the participants of a phoretic relationship? (+ / 0 ) Ex: termites feed on wood but they are not able to digest it. Therefore the intestinal protists secrete cellulose that digest wood. One partner benefits and the other is harmed/ Parasitoid only one host is attacked and always killed.
