Kin_Selection___Social_Behaviour

Kin_Selection___Social_Behaviour - Kin Selection & Social...

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Kin Selection & Social Behaviour Reading, chapter 12 (emphasize examples covered in notes): p447-457, box 12.1 , p454-456, p460-465, 467-475,
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Objectives Kin Selection Eusociality Parent-Offspring Conflict Reciprocal Altruism
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Social Interactions can have Impacts on Fitness Mutualism : fitness gains for both participants Altruism : fitness loss for individual carrying out action, and gain for individual on the receiving end Selfishness : opposite of altruism Spite : fitness loss for both participants; there are no good examples of this in nature
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Altruism and Inclusive Fitness Altruism was a Paradox of Darwinism Selection could favour traits that increase survival and fitness of close relatives even if there is decreased personal fitness if an individual is helping close relatives with an act, even if it costs him fitness. This is a trait that spreads in population. The fitness of an individual can be divided into two components. An individuals Inclusive Fitness consists of: A) Direct fitness due to personal reproduction B) Indirect fitness additional reproduction by relatives. Behavior that results in indirect fitness gains is favored by kin selection. The selection and spread of alleles that increase indirect fitness is kin selection
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Altruism and Inclusive Fitness Direct fitness: an individuals direct contribution
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This note was uploaded on 09/28/2011 for the course BIOL 301 taught by Professor Pickard during the Spring '09 term at Waterloo.

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Kin_Selection___Social_Behaviour - Kin Selection & Social...

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