Effects of Temperature on Anoplophora chinensis (Coleoptera: Cerambycidae) Adult Survival, Reproduction, and Egg Hatch
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Anoplophora chinensis (Forster) is an invasive species that can damage many tree species in orchard, urban, and forested habitats. Adult survival, reproduction, and egg hatch of A. chinensis from Italy and China are evaluated at eight constant temperatures (5, 10, 15, 20, 25, 30, 35, and 40 ºC) under laboratory conditions. The estimated Tmax for longevity was 42 and 33 ºC for females and 42 and 39 ºC for males from China and Italy, respectively. The estimated Tmax, Tmin, and optimum temperature for fecundity were 35, 9, and 29 ºC, respectively. Females laid eggs at 15–30 ºC and eggs hatched at 15–35 ºC. Days to first oviposition increased exponentially from 13 days at 30 ºC to >300 days near 10 ºC. The estimated Tmin for egg hatch was 13 ºC, the Tmax at 38 ºC, and the optimum 29 ºC. Percentage hatch was estimated to be highest at 26 ºC and have a Tmax of 31 ºC and Tmin of 10 ºC. These results indicate that summer temperatures over a wide range of latitudes should support beetle survival and reproduction, but at temperatures ≥35 ºC, oviposition ceases, and adult survivorship declines. In addition, females may survive into the fall, but lay fewer eggs that may not hatch. These responses of A. chinensis to temperature can be used for developing phenological models to predict the timing of stages for management or eradication efforts.
KeywordsAnoplophora chinensis; temperature; survival; reproduction; fecundity
Keena, Melody A.; Moore, Paul M.; Bradford, Gregg. 2021. Effects of Temperature on Anoplophora chinensis (Coleoptera: Cerambycidae) Adult Survival, Reproduction, and Egg Hatch. Forests. 12(4): 432. 16 p. https://doi.org/10.3390/f12040432.