Evalutiaon of four isomers of 3‐butyl‐5‐methloctahydroindoliz, a component of the trail pheromone of pharaoh's ant, Monomorium pharaonis

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Abstract
SUMMARY: Four isomers of 3‐butryl‐methyloctahydroindolizine (monomorine 1), a major component of the trail pheromone of Monomorium pharaonis, was tested for attractant and trail‐initiating activity, One isomer showed attractancy and, under colony condition, tow initiated trail‐following bahaviour. Only the all‐cis isomer (monomorine 1a) had both attractant and trail‐initiating activity. The results indicated that these compounds may have only limited potential for use in control measures against this species.