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<p><i>Panonychus ulmi</i> Koch (Acari: Tetranychidae), commonly named European red spider mite, is one of the major phytophagous pests of various crops. To perform the integrated mite management, predation parameters and the population growth of the predatory mite, <i>Typhlodromus setubali</i> Dosse (Acari: Phytoseiidae) were determined by the age-stage two-sex life table analysis at 30&#xa0;°C, 65 ± 5% RH, and a photoperiod of 16:8 (L: D). The predator showed fast development with a short generation time (<i>T</i> = 14.90&#xa0;days). The fecundity was 19.32 eggs/female, resulting in a high survival rate (0.73) and longevity (24.05&#xa0;days) for females. Life table parameters were <i>r</i> = 0.177 d<sup>−1</sup>, λ = 1.194 d<sup>−1</sup>, and <i>R</i><sub><i>0</i></sub> = 14.16 offspring/individual. The female predation rate was 310.86 prey, compared to 101.71 prey for males. The <i>C</i><sub><i>0</i></sub>, <i>Q</i><sub><i>p</i></sub>, <i>ψ</i>, and <i>ω</i> of the predator were 260.03 prey/individual, 18.48 prey, 4.01 prey, and 4.80 prey, respectively. Once the age-stage structure of the <i>T. setubali</i> population stabilized, the stage-specific growth rate and the overall population size were determined with necessary confidence. Using the bootstrap resampling technique with 100,000 samples, the <i>T. setubali</i> life table constructed based on the 2.5th and 97.5th percentiles of population parameters is demonstrated and used to project the population growth.</p>

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Modeling the Panonychus ulmi and Typhlodromus setubali relationship using the age-stage two-sex life table analysis

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • Said Ouassat,
  • Latifa Allam

摘要

Panonychus ulmi Koch (Acari: Tetranychidae), commonly named European red spider mite, is one of the major phytophagous pests of various crops. To perform the integrated mite management, predation parameters and the population growth of the predatory mite, Typhlodromus setubali Dosse (Acari: Phytoseiidae) were determined by the age-stage two-sex life table analysis at 30 °C, 65 ± 5% RH, and a photoperiod of 16:8 (L: D). The predator showed fast development with a short generation time (T = 14.90 days). The fecundity was 19.32 eggs/female, resulting in a high survival rate (0.73) and longevity (24.05 days) for females. Life table parameters were r = 0.177 d−1, λ = 1.194 d−1, and R0 = 14.16 offspring/individual. The female predation rate was 310.86 prey, compared to 101.71 prey for males. The C0, Qp, ψ, and ω of the predator were 260.03 prey/individual, 18.48 prey, 4.01 prey, and 4.80 prey, respectively. Once the age-stage structure of the T. setubali population stabilized, the stage-specific growth rate and the overall population size were determined with necessary confidence. Using the bootstrap resampling technique with 100,000 samples, the T. setubali life table constructed based on the 2.5th and 97.5th percentiles of population parameters is demonstrated and used to project the population growth.