Biology 338: Lecture 5Spring 1997

Dispersal and Migration, Orientation and Navigation

  1. Dispersal and migration
    1. Definitions
      1. Dispersal
      2. Migration
    2. Costs
    3. Benefits
    4. Examples
      1. Monarch butterfly
      2. Green sea turtle
      3. Pacific salmon
      4. Artic terns
    5. Bird migration
      1. Methods
      2. Annual cycle
      3. Proximate mechanisms of control

  2. Orientation and navigation
    1. Definitions
      1. Orientation
        1. Direction
        2. Compass sense
      2. Navigation
        1. Position
        2. Map sense
    2. Case study: Honeybees
      1. Observation
      2. Map sense
      3. Compass cue = time-compensated position of sun in sky
    3. Case study: Pigeons
      1. Observation
      2. Primary compass cue = position of sun in sky
      3. Secondary compass cue = earth's magnetic fields
      4. Map sense = olfactory map (?)