Spinetoram-induced changes in life-history and population growth of Cadra cautella (Lepidoptera: Pyralidae)
Year: 2026
Type: article
Abstract: Cadra cautella (Walker) (Lepidoptera: Pyralidae) is an important stored pest responsible for significant losses worldwide. Spinetoram has demonstrated high efficacy against numerous agricultural and stored-product insect pests, including C. cautella . However, information on its sublethal impacts on the biological attributes and demographic performance of this species remains limited. Accordingly, we evaluated both the lethal and sublethal responses of C. cautella to spinetoram. The LC 30 , LC 50 , and LC 70 values were estimated to be 0.23, 1.09, and 5.11 ppm, respectively. Exposure to spinetoram significantly reduced the preadult survival rate of C. cautella at the LC 50 and LC 70 levels relative to the untreated control. Furthermore, larval development, preadult development, the total preoviposition period, and mean generation time were significantly extended in all treated groups. The pupal stage was prolonged following exposure to the LC 30 and LC 70 concentrations, whereas adult longevity was significantly shortened regardless of treatment concentration. Reproductive performance was also adversely affected, as evidenced by significant reductions in the oviposition period, r , λ , R 0 , GRR, s xj , f x , m x , l x m x , age-stage-specific reproductive output, e xj , and v xj . These findings demonstrate that spinetoram suppresses the population growth of C. cautella through both direct mortality and sublethal effects that impair development, survival, and reproductive capacity.
Source: Scientific Reports
Institution: King Saud University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W7223017866