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Foraging behaviors Variability in wing color in Catocala sp. Development of search images increases effective foraging behavior Stable vs constant conditioning.

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Presentation on theme: "Foraging behaviors Variability in wing color in Catocala sp. Development of search images increases effective foraging behavior Stable vs constant conditioning."— Presentation transcript:

1 Foraging behaviors Variability in wing color in Catocala sp. Development of search images increases effective foraging behavior Stable vs constant conditioning image

2 Development of search images increases effective foraging behavior Skunks use olfactory cues to find food Experience with food odors will increase: 1.Effectiveness on first trial of day 2.Effective orienting distance

3 Communicating food location Round dance: food within 10-50m from hive.

4 Communicating food location Waggle dance: food is 50m-2mi from hive Dance consists of: A figure-eight pattern of locomotion A cue that the food is not local A waggle at the intersection of the eight Indicates distance (duration of waggling) size of food source (variance of waggle) Horizontal (outside) waggle points directly to food source

5 Communicating food location Vertical (inside) deviation from vertical indicates direction with respect to current position of the sun

6 Communicating food location: accuracy Angular variance of recruits to target Distance variance of recruits to target

7 Vertical dance requires a gravitational cues to accurately indicate direction Target location by distance in horizontal vs vertical hives Variance in search direction by distance in horizontal vs vertical hives

8 Species differences in communication: Clues to the evolutionary process? Apis florea (Asian honeybee) Only does horizontal dance Melipona panamica Buzzing as communication: 1.Patterning = height 2.Duration = distance 3.Flight trajectory = direction

9 Species differences in communication: Clues to the evolutionary process? Species of Trigona will indicate a find by: 1.Simply buzz at high frequency; this excites others 2.Deposit a trail of pheromones

10 The adaptive advantage of division of labor in foraging Scouts: get foragers to better food faster than if they worked alone

11 The adaptive advantage of division of labor in foraging


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