BIOLOGY 3SS3 Lecture Notes - Lecture 4: Semelparity And Iteroparity, Exponential Growth
12 Apr 2017
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Document Summary
Life history: how organisms allocate resources to key components underlying reproductive success. Differing strategies: organisms too similar are not expected to co-exist, two organisms may be able to exploit the same resources using different life history strategies. Trade-off: improvements in one area come at a cost of disadvantages in another area. Organizational frontier: limited resources, under natural selection, when under natural section near frontier of high fitness, hard to improve one quality without a trade-off in another (reproduction-survival) Organisms make choices to optimize fitness but they don"t know they"re doing this. Quick maturation vs large final size: mature more quickly reproduce more quickly, mature slowly typically reproduce more (over longer period) overall. Or allocate more energy to each offspring = higher chance of survival. Semelparity reproducing only once: converting all resources to reproduction once you start could be very efficient.
