BIOL 103 Lecture Notes - Lecture 12: Antagonistic Pleiotropy Hypothesis, Semelparity And Iteroparity, Fowl Cholera
21 Oct 2017
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Document Summary
Small probability pays to invest everything in one reproductive bout because of that migratory behaviour. Population dynamics if organism has explosive growth large population then contracting due to a crash. Big horn sheep survival as a function of density: resources are limiting, when densities of lambs are high low survival rates compared to when densities are low. Another arms race: fluctuation in equilibrium red queen phenomenon: cycling of lynx and hare column: hare abundance, line: lynx abundance. : low dn/ds in relatives of homo (e. g. great apes) World population growth: thomas malthus exponential human growth struggle for existence: turns out to be true. Usa: 13 births/ 1000, kenya: 34 births/ 1000. World fertility rate is declining (since 1950s): humans are doing something different (stopped growing at same rate: population dynamics: overpopulation may no result, rather population may just taper off at steady state (9 . 11 billion people) predicted to level off within 100 years.
