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  • Title: Life history parameters of Ectropis grisescens (Lepidoptera: Geometridae) in different Wolbachia infection states.
    Author: Li Q, Ji R, Zi H, Sun W, Zhang Y, Wu X, Long Y, Yang Y.
    Journal: J Econ Entomol; 2024 Oct 14; 117(5):1859-1866. PubMed ID: 39109809.
    Abstract:
    Wolbachia, a prevalent intracellular symbiotic bacterium in insects, plays a significant role in insect biology. Ectropis grisescens (Warren; Lepidoptera: Geometridae) is a devastating chewing pest distributed in tea plantations throughout China. However, it is unclear how Wolbachia titers affect the fitness and reproduction of E. grisescens. In this study, the impacts of 3 different infection lines, naturally Wolbachia-infected, Wolbachia-uninfected, and Wolbachia transinfected, regarding the life history traits of E. grisescens, were evaluated using the age-stage, 2-sex life table. Wolbachia infection shortened preadult duration and preoviposition periods and increased the fecundity, net reproductive rate, and finite rate of increase. Meanwhile, population projection indicated that E. grisescens population size with Wolbachia infection can increase faster than without. These results indicate that Wolbachia plays a regulatory role in the fitness of E. grisescens. It is also noted that the life history parameters of E. grisescens may positively correlate with Wolbachia titers. These findings could aid in pest management in tea gardens.
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