Monarch butterfly migration
Merlin, Christine Department of Neurobiology, University of Massachusetts Medical School, Worcester, Massachusetts.
Gegear, Robert J. Department of Neurobiology, University of Massachusetts Medical School, Worcester, Massachusetts.
Reppert, Steven M. Department of Neurobiology, University of Massachusetts Medical School, Worcester, Massachusetts.
- Annual migratory cycle
- Time-compensated sun compass: a major navigational tool
- Role of the antennae in time-compensated sun compass orientation
- Links to Primary Literature
- Additional Readings
Eastern North American monarch butterflies (Danaus plexippus) use a time-compensated sun compass to navigate south during their spectacular fall migration. Recent experiments show that the circadian clocks that provide time compensation for the sun compass mechanism reside in the antennae and not in the brain. This surprising finding poses a novel clock-compass connection that may apply widely to insects.
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