9%20Nov%20Bees - 144 Honey Bees Honey Bee Foraging extreme...

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144: Honey Bees 9 Nov 09 1 Honey Bee Foraging extreme cognition in a tiny head Apis mellifera • Worldwide Behavioral mechanisms? • Information center –Advantage of group living –Osprey (Erick Greene) Who communicates? Foraging Workers • Eusocial • Castes –Queen (polyandrous) –Male Drones –Female Workers •development of jobs –Tend & clean cells –Forage for food
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144: Honey Bees 9 Nov 09 2 Karl von Frisch • Bee hive • Feeder –Mark foragers –Sudden increase Fan experiment: Bees communicate direction Bees communicate distance
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144: Honey Bees 9 Nov 09 3 Round Dance: Type of food, close Species (scent) Quality < Distance <100 m < 40 m < 5 m (dialect) Waggle dance: distance + direction Dance information is precise Visual odometer • Recruits search according to dance • Adaptive ‘imprecision’ closer to hive • Farther, more precise Summary so far • Mechanism –Dance language –Foraging workers –Round: close, imprecise –Waggle: far, precise
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144: Honey Bees 9 Nov 09 4
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