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Lecture 5

LIFESCI 3C03 Lecture 5: Guest Lecture 5 - DB Krupp

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Life Sciences
Ayesha Khan

Social Evolution Social Evolution: using evolutionary theory to explain how species functionthinkbehave in this case specifically communication Actor: Does an action that decreasesincreases his own fitness: 1) If his action benefits the recipient as well as itself that this is known as mutual benefit (Short term cost for long term benefit), 2) If the actor does an action that hurts the other it is considered selfishness 3) altruism is when the actor takes a hit or cost in order to help other recipients 4) Actor hurts itself to hurt someone else is stupid or spit Summary: Four Types of InterSpecies Relationships: 1) SelfBenefit + OtherBenefit = Mutual Benefit 2) SelfBenefit + OtherCost = Selfishness 3) SelfCost + OtherBenefit = Altruism 4) SelfCost + OtherCost = StupidSpit Why would an induvial do an action to decrease their offspring? = In order to help someone else reproduce!! Lemmings due not kill themselves for the better of the groupsspecies when their population grew to big o If a mutation in the population causes q to outsmart the others and not kill themselves it would out reproduce everyone else (imbalance) (q = refereeing to specific gene) Losing 1 of your own offspring to provide multiple others with more offspring than normal means more copies of the gene will be present in the gene pool compared to if the actor did not do the action (Net Gain Obtained) Action of Actor = C (Actor Pays a Cost To Do An Action) The larger the C the greater the cost, the more negative C the larger the benefit Action Effect on Recipient = B (Recipients Obtains a Benefit from Actor) The larger B the greater the benefit, the more negative B is the larger the cost r Positive probability of relatedness (value is negative when not related but not done often) *** [(r x b) c > 0] = Altruistic Behaviour Will Occur Hamiltons Rule *** Dr. Krupps Research and Experiments: A lot of Krupps research and undergraduate work was looking into Game Theory (Ex. Prisoners Dilemma) being applied to the real world (Economics, Business, Criminology, etc.) o Perceptual Symmetry and Extracting Preferences to Obtaining Mates KIN RECOGNITION (Main topic of interest)
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