Spinetoram-induced changes in life-history and population growth of Cadra cautella (Lepidoptera: Pyralidae)
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.
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BibTeX
@article{hafez2026spinetoraminduced,
title = {{Spinetoram-induced changes in life-history and population growth of Cadra cautella (Lepidoptera: Pyralidae)}},
author = {Abdulwahab M. Hafez and Saddam Hussien Tutu Ardon and Naeem Abbas},
journal = {Scientific Reports},
year = {2026},
month = oct,
doi = {10.1038/s41598-026-77022-6},
url = {https://www.nature.com/articles/s41598-026-77022-6},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Spinetoram-induced changes in life-history and population growth of Cadra cautella (Lepidoptera: Pyralidae)
AU - Abdulwahab M. Hafez
AU - Saddam Hussien Tutu Ardon
AU - Naeem Abbas
PY - 2026
DA - 2026/10/20
JO - Scientific Reports
DO - 10.1038/s41598-026-77022-6
UR - https://www.nature.com/articles/s41598-026-77022-6
AB - 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.
SN - 2045-2322
ER -