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1 December 2010 Effects of Temperature and Humidity on Emergence Dynamics of Plutella xylostella (Lepidoptera: Plutellidae)
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Abstract

The effects of temperature and humidity on the emergence patterns of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), were studied at four temperatures (20, 25, 28, and 33°C), three relative humidities (50, 70, and 90%) and a photoperiod of 14:10 (L:D) h. Both sexes emerged primarily in the late afternoon to early morning, and the peaks of emergence varied depending on temperature and humidity. Females emerged significantly earlier than males. Incubation at 33°C and 90% RH had a significant effect on the emergence rate, but no significant interaction was found between temperature and humidity. Emergence duration was 25.3 h for both sexes at 90% RH, with emergence duration at 33°C lower than the other treatments. The sex ratios of diamondback moth under different temperature and humidity treatments were ≈1:1, and there were no significant effects of temperature and humidity or interactions between these two factors.

© 2010 Entomological Society of America
Sufen Guo and Yuchuan Qin "Effects of Temperature and Humidity on Emergence Dynamics of Plutella xylostella (Lepidoptera: Plutellidae)," Journal of Economic Entomology 103(6), 2028-2033, (1 December 2010). https://doi.org/10.1603/EC09251
Received: 2 August 2009; Accepted: 1 July 2010; Published: 1 December 2010
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