Effects of a juvenile hormone analogue on honey bee foraging behaviour and alarm pheromone production

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Abstract

Worker honey bees treated with 250 μg of the juvenile hormone analogue methoprene shifted from the broodnest to the food storage region prematurely and displayed precocious foraging behaviour. Treatments with 25 and 2.5 μg caused slight but non-significant effects. Methoprene did not influence individual foraging performance as measured by mean number of foraging trips/h, mean amount of time spent foraging/h or mean duration of the total foraging period. Methoprene also induced premature production of two alarm pheromones, 2-heptanone and isopentyl acetate. These results support the hypothesis that juvenile hormone regulates temporal division of labour in the honey bee colony.

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