Biology 1001A Lecture Notes - Lecture 25: Limiting Factor
3 Apr 2016
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Document Summary
Evolutionary arms race, mutualistic, competitive and antagonistic relationships between species, given "real world" examples. Mutualism: both may benefit: both species benefit from other being there, analogous (comparative) to cooperation. Competition: both may incur costs: arises when limiting resources that both species need in order to survive, each species suffers reduction in population and fitness because other species is present. Antagonism: one benefits, other suffers: one species uses the other, one species is a limiting resource for the other species, factors that advantage one side or the other in an evolutionary arms race. If one species can evolve more quickly than other. One species can have a faster generation time. Selection pressures on prey species are stronger than on predators. Strength of selection: one species affected more by presense of other species: meaning of "life-dinner principle" Prudent parasite hypothesis: parasites should minimize virulence: selection favors less virulent host evolves to do less fatal. Way in which the parasite is transmitted.
