BIOMI 3310 Lecture Notes - Lecture 1: Protist, Commensalism, Fetus
Document Summary
Symbiosis: the act or process of different species living together. Four major groups of symbiotic relationships: commensalism: one organism benefits, the other is unaffected, ex. ) The host in which the adults worms and arthropods or the sexual stages of protista are found. If the parasite has no sexual stages, the definitive host is the host with which we are most typically concerned. Final host is the preferred term (instead of definitive host) if developmental stages of the parasite occur in other hosts. Intermediate host: a host in which essential development of the parasite occurs. For parasites, this is usually a definitive host: parasitoids: a parasite that consumes its host from the inside out and may grow larger than its host, ex. ) parasitoid wasps lay their eggs in a larval insect. As the insect matures, it"s consumed by the wasp larvae within it: hyperparasitism: parasitism of one parasite by another parasite. Micropredators: predatory mites; not the same as parasites.
