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Evolution

Evolution. CASE STUDIES: The evolution of the honeybee dance language. Karl von Frisch 1886-1982 (Nobel prize 1973). How does the dance encode direction?. Prof. Lindauer goes to the tropics. Apis cerana – the Asian hive bee. Apis dorsata – the giant honeybee (or rock bee).

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Evolution

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  1. Evolution • CASE STUDIES: The evolution of the honeybee dance language

  2. Karl von Frisch 1886-1982(Nobel prize 1973)

  3. How does the dance encode direction?

  4. Prof. Lindauer goes to the tropics

  5. Apis cerana – the Asian hive bee

  6. Apis dorsata – the giant honeybee (or rock bee) • up to 1 inch long

  7. Apis florea – the dwarf honeybee • dorsata and florea in comparison

  8. Apis florea (dwarf honeybee) nest • dances are performed on the horizontal surface, waggle run directly oriented to the food source

  9. The evolution of the dance language

  10. Forager behavior Dornhaus & Chittka, Nature 1999 Excited running for 13s to 10min (average 2,6 min)

  11. From: Chittka & Dornhaus 1999

  12. Jamming the information content of the waggle dance

  13. disoriented dance oriented dance

  14. Measuring foraging success Daily weight changes of a beehive can be measured on a scale - this reflects mostly nectar intake 12,035 kg

  15. Benefits of dance communication are limited to the tropical habitat

  16. temperate

  17. tropical

  18. Spatial aggregation in tropical and temperate habitats Temperate Tropics

  19. The honeybees originated in tropical Asia

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