Previous studies show that pupating in soil is essential for Heortia vitessoides Moore (Lepidoptera: Crambidae) to complete its life cycle. However, little is known of the process. In the present study, we observed soil-burrowing and pupal-chamber construction by prepupae of H. vitessoides in 0.5-cm-wide acrylic plate interlayers. In bioassays, we also investigated pupation behaviors and pupal physiology and morphology in response to soil moistures of 5%, 25%, 45%, and 65% water saturation. Prepupae burrowed significantly deeper in soils with higher levels of soil moisture and constructed larger pupal chambers at 65% water saturation. H. vitessoides pupae also had significantly greater percentage biomass loss and lower body water content when the soil moistures were lower. Interestingly, pupae in 5% saturated soil were smaller and showed a significantly higher surface-to-volume ratio than at other soil moisture levels, which might pose challenges in water conservation.
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1 July 2017
Soil Moisture Effects on Pupation Behavior, Physiology, and Morphology of Heortia vitessoides (Lepidoptera: Crambidae)
Yuzhen Wen,
Wenquan Qin,
Xuan Chen,
Xiujun Wen,
Tao Ma,
Xian Dong,
Shucong Lin,
Zhaohui Sun,
Shucai Zeng,
Cai Wang
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Journal of Entomological Science
Vol. 52 • No. 3
July 2017
Vol. 52 • No. 3
July 2017
Heortia vitessoides
moisture condition
pupa physiology
pupal chamber
soil-pupation behavior