4/25/12 1 Dominance Hierarchy Despo0c (a.k.a. steep) Macaques Alpha Beta Gamma Linear (a.k.a. shallow or egalitarian) Wolves Helping Behavior Obligate altruism Reciprocity Faculta0ve altruism Mutualism Shared gain of direct fitness Example: Prey capture by lion pride Delayed gain of direct fitness (dependent upon repayment) Example: Vampire bat blood exchanges Permanent loss of direct fitness (with potenLal for indirect fitness gain) Example: Honey bee workers foraging for colony Temporary loss of direct fitness (with potenLal for indirect fitness gain followed by personal reproducLon) Example: Florida scrub jay helping at the nest, then gaining parental territory The direct reproductive success of individuals that engage in different kinds of social interactions Effect on direct reproductive success of Type of interaction Social Donor Social Recipient Mutualism + + Reciprocity + (delayed) + Altruism - + Selfish Behavior + - Spiteful Behavior - - Mutualism Mutualism Show Planet Earth : Great Plains Lions (35:45 ‐ 43:33) or (You Tube ) African Wild Dogs (You Tube ) Mutualism
6
Embed
29-023 mutualism-altruism - John Burroughs Schoolscience.jburroughs.org/sdeken/sdeken/advbio/abnotes/2012spring4/mutualismaltruism.pdfFacultave Altruism Facultave Altruism Show Nature
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
The direct reproductive success of individuals that engage in different kinds of social interactions
Effect on direct reproductive success of Type of interaction Social Donor Social Recipient Mutualism + + Reciprocity + (delayed) + Altruism - + Selfish Behavior + - Spiteful Behavior - -