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    Effects of photo regime on the timing of male responses to sex pheromones in male Cnaphalocrocis medinalis (Lepidoptera: Crambidae)

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    Date
    2003
    Author
    Kawazu, K.
    Adati, T.
    Tatsuki, S.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    We examined the effect of moth age and photoregime on the timing of male response to sex pheromones in male Cnaphalocrocis medinalis. The responsiveness of males varied with age, increasing up to 3-days and then remaining constant to 7-days. In male responses to the pheromone throughout the scotophase under five different photoregimes, it was shown that the time to reach the maximal response level after lights-off was rather constant (ca. 4 h), regardless of the duration of the scotophase in a range from 6 to 18 h. The maximal response level in every case appeared to be maintained until the end of the scotophase. Furthermore, in the experiment involving 63 h shifts of lights-off or lights-on timing from the usual 15L:9D, the male responsiveness increased within 4 h after lights-off, and the maximal level extended throughout the remaining dark period. These results suggest that, at least under the present experimental conditions, only lights-off and lights-on cues are critical for the timing of the increase and decrease in responsiveness. No responsiveness was observed under light conditions, showing that light inhibits the responsiveness of males to sex pheromones.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4900
    IITA Subjects
    Pests Of Plants
    Agrovoc Terms
    Cnaphalocrocis Medinalis; Pheromone Control
    Regions
    Asia; East Asia
    Countries
    Japan
    Collections
    • Journal and Journal Articles4835
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