BIOL 360 Lecture Notes - Lecture 13: Competitive Exclusion Principle, Microbial Ecology, Oscillation
Document Summary
Gauses" research focused on the population density of p. aurlia and p. caudatum- when grown separately, both species grew exponentially until met with the carrying capacity (limiting factors). When grown in a mixed culture, p. a thrived while p. c failed after some time. This is an example of the competitive exclusion principle- two species that are too similar cannot grow in the same environment. One species will always have an advantage and outcompete the other. Protozoa: classes sometimes determined by how they eat, trophostome= cellular mouth, trichocytes- shoot out thread like projections that sting others. Trichocytes surround the paramecium"s surface: when eating, dn latches on to parmeicum at front end, dn always has 2 ring of cilia around it. Electron source inorganic (lithotroph) organic (organotroph: phototroph- light, chemotroph- break covalent bonds, macroworld possibilities, plants: lap (lithotroph, autotroph, phototroph) litho-auto-phototroph, human: coh (chemo-organo-heterotroph, microworld possibilities, can take any combination of the 6 prefixes.
