The Morphology, Effects of Temperature and Photoperiod on Pseudopupal Diapause and Low Temperature Storage of Epicauta impressicornis (Coleoptera: Meloidae)
Year: 2024
Type: article
Abstract: The gross morphology of each phase of the hypermetamorphic development of Epicauta impressicornis Pic (Coleoptera: Meloidae) was observed. The effects of temperature and photoperiod on pseudopupal (5th instar larva) diapause and low temperature storage on eggs and pseudopupae were determined. Low temperatures had a dominant effect on diapause incidence, regardless of the photoperiod. Pseudopupae stored at temperatures lower than 18 °C entered diapause, but completed their development without entering diapause at 21, 24, and 27 °C. The critical temperature for inducing diapause was between 16 °C and 16.5 °C, regardless of the photoperiod. The viability of low temperature storage of eggs and pseudopupae decreased with prolongation of storage time. The optimal storage condition for both eggs and pseudopupae was 4 °C for 30 days. Our results will provide a theoretical basis for additional studies on the biological characteristics of E. impressicornis and will also function as a prerequisite basic reference for the artificial large-scale rearing of E. impressicornis.
Authors: Yangyang LIU, Zhicheng ZHOU, Xiangsheng CHEN
Institutions: Guizhou University, Guiyang University
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
Award: G2083576289
OpenAlex ID: W4405025564