BIOL 101 Lecture Notes - Lecture 5: Keystone Species, Tetraodontidae, Intertidal Zone
Document Summary
Ways in which organism utilizes the resources of the environment. The type and amount of food an organism utilizes. An organism"s temperature and moisture requirements other necessary living conditions. Effect on participants example: one partner benefits and one has no effect. Mechanical: spikes on a porky pine, size of puffer fish when it blows up. Chemical: taste bad, poison in them. Warning coloration: yellow, orange or red, a twist on warning coloration: mimicry. Other animals and insects will mimic another organism to defend themselves and play themselves off as dangerous. Compete to one wins and one gets excluded. Character displacement: occurs when the natural selection reduces the competition between two species by producing an evolutionary divergence in one or both species. Parasitism: is a form of predation, parasites have some unique features and face some unusual challenges: The parasite generally is much smaller than its host and stays in contact with the host for extended periods of time.
