Effects of Different Levels of Drought Stress in Ficus Plants on the Life History and Population Growth of Perina nuda (Lepidoptera: Lymantriidae): An Age-Stage, Two-Sex Life Table Analysis
Changqi Chen, Yunfang Guan, Yan Wang, Ying Zhang, Zhu Liu, Yana Zhou, Zongbo Li, Yuan Zhang

TL;DR
This study shows how drought stress affects the life cycle and population growth of a pest species, Perina nuda, feeding on Ficus plants, with implications for pest management under climate change.
Contribution
The study introduces a novel application of age-stage, two-sex life table analysis to assess the impact of drought stress on a pest species.
Findings
Light drought stress maximizes the fitness of Perina nuda, enhancing development, reproduction, and population growth.
Severe drought stress also increases population growth rates and sizes compared to the control group.
Drought stress alters key life history traits, including larval development time and adult lifespan.
Abstract
Based on the age-stage, two-sex life table theory, this study systematically investigated the effects of reared on Ficus microcarpa subjected to different levels of drought stress on the life history traits and population dynamics of Perina nuda. The research findings demonstrate that the effects of different levels of drought stress on P. nuda exhibit a nonlinear pattern. Under light drought stress, the fitness of this pest reaches its peak, manifested by optimal levels across key parameters including development, reproduction, and population growth. In contrast, moderate drought stress had a relatively weak effect; while severe drought stress promoted some life history parameters, its overall impact was weaker than that of light drought stress. The population prediction results indicate that both the growth rate and population size of P. nuda under light and severe drought stress are…
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Taxonomy
TopicsPhytochemistry and biological activities of Ficus species · Insect behavior and control techniques · Plant and animal studies
