Effect of rearing temperature on pheromone component ratio in potato tuberworm moth, Phthorimaea operculella, (Lepidoptera: Gelechiidae)

Ono, T.

Effect of rearing temperature on pheromone component ratio in potato tuberworm moth, Phthorimaea operculella, (Lepidoptera: Gelechiidae)

1993

Ono, T.

The ratio of two components in the sex pheromone of the potato tuberworm moth, Phthorimaea operculella, was influenced by the rearing temperature. The percentage of the (E,Z,Z)-4,7,10-tridecatrienyl acetate dropped as the rearing temperature was raised. The total amount of the pheromone did not change parallel with the change of ratio. The critical period sensitive to temperature seemed to be the pupal stage. Temperature in the larval stage may also influence the ratio slightly. The biological significance of the phenomenon was also discussed.

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