BIOLOGY 1M03 Lecture Notes - Lecture 31: Dusky Antechinus, Sockeye Salmon, Semelparity And Iteroparity
29 Mar 2017
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Document Summary
Many species show growth that is not tied to a particular annual season: e. g. humans; yeast; bacteria. R , the per-capita growth rate, measures growth at any particular instant: it is also called the instantaneous rate of increase r relates to according to, =er. Where e is the base of the natural log. How an organism allocates resources to growth, reproduction, and activities or structures related to survival: how the organism stores food. Life history parameters reflect upon survivorship: type 1 (convex) An organism"s life (or time) pattern of growth, differentiation, storage, and reproduction. Goal of life history is increasing the number of successful descendants. Fecundity: number of offspring produced per reproductive episode. Termination of life: senescence and programmed death. Upstream rapid growth 4mm shell length: reproduction begins early. Downstream rapid growth to 10mm shell: reproduction begins late, crayfish population downstream, need to be bigger.
