Biology 338: Lecture 13Spring 1997

Defensive Behavior II

  1. General evasive behaviors

  2. Coping with predators adaptively - revisited
    1. Making detection less likely
    2. Making an attack less likely
    3. Making capture less likely
      1. Startle displays
      2. Color flashing
      3. Social vigilance and alarm calls
      4. Selfish herd
      5. Dilution effect
    4. Making consumption less likely
      1. Chemical defenses
      2. Spines, poisonous hairs, stingers
      3. Misdirecting consumers
      4. Detachable body parts
      5. Attracting competing consumers
      6. Death feigning

  3. Case study: monarch butterflies