Social Behavior

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Social Behavior
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One last thing on learning
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Group Living

• Advantages
• Inc. chances of surviving, feeding or finding
  mates
• More time feeding, less time looking for
  predators
• Disadvantages
• Altruism benefits group, harms individuals

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Social Behaviors

• Contests for resources
• Develop as evolutionary adaptations
• Antagonistic behaviors
• Threatening and submissive behaviors
• Symbolic, usually no harm done

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Social Behaviors

• Dominance Hierarchy
• Social ranking within a group
• Pecking order

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Social Behaviors

• Altruistic Behaviors
• Reduces individual fitness but increases fitness
  of recipient
• How can this be of adaptive value?
• Kin selection
• Exs
• Vampire bats
• Dolphins
• Meercats
• Rhesus monkeys
• Spiders

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Territoriality
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Cooperation

• Packs of wild dogs hunting wildebeests
  cooperatively
• White pelicans herding a school of fish

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Communication

• Pheromones
• Chemical signal that stimulates a response from
  other individuals
• Alarm pheromones
• Sex pheromones

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Pheromones

• Female mosquitoes use CO2 concentration to locate
  victims
• A spider mimics moth pheromones to lure prey
• Female lions lure males through pheromones as
  well as posture

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