Effects of male photoperiod on calling, pheromone levels, and oviposition of mated female Trichoplusia ni [Cabbage looper]

The photoperiod in which males were reared clearly influenced calling behavior and oviposition, but not pheromone levels of subsequently mated females of the cabbage looper, Trichoplusia ni (Huebner). Females mated with light-dark (LD) males oviposited ca. 3.5-fold more eggs and were observed to call less than females mated with light (LL) males reared in continuous light. Levels of pheromone Z-7 dodecenyl acetate in glands of 5-day-old female T. ni were not significantly different from LL or LD virgin females or females mated with LL or LD males.