BIOL208 Lecture Notes - Reciprocal Altruism, Prestressed Concrete, Group Selection
9 Apr 2014
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Biol 208 (january 27, 2014: altruism, ex. red squirrels adopting baby squirrel of another organism. Individual donating food at their own cost while the adopted squirrel gets fed: ex. Host bird may not be able to discern the difference between own offspring and another organisms of a totally different species. Parasitic baby bird then kicks out other real offspring of the parent out of the nest: voluntary and involuntary (mom doesn"t know, ex. Bonded male will fight off other males. If 2 unbonded males show up, one will fight the bonded male and the other will have sex with the female: unbonded and fighting male is altruistic. Getting harmed for the benefit of the other unbounded male: this is reciprocal altruism (take turns) Must be able to recognize individuals and have a memory of what they did before. (no need for trust but is based on actions of other individuals. Should not be favoured due to natural selection.
