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<p>The predatory mite <i>Amblyseius swirskii</i> Athias-Henriot (Acari: Phytoseiidae) is important for controlling pests such as whiteflies, mites and thrips in greenhouses. Different commercial diets have been investigated for its mass production. A diet containing the pest mite species <i>Rhizoglyphus robini</i> Claparède (Acari: Acaridae) along with almond pollen (AP) was used for mass rearing of the predatory mite after three and ten generations and evaluated its effects on life table parameters. Four diets of <i>R</i>. <i>robini</i> were defined as follows: 30% <i>R. robini</i> + 70% AP (R30), 50% <i>R. robini</i> + 50% AP (R50), 80% <i>R. robini</i> + 20% AP (R80), and 100% <i>R. robini</i> mite (R100). The highest intrinsic rate of increase (<i>r</i><sub><i>m</i></sub>) of 0.20 day<sup>− 1</sup> and net reproductive rate (<i>R</i><sub><i>0</i></sub>) of 16.1 eggs/individuals/generation, and the shortest mean generation time (<i>T</i>) of 13.6 days was observed in R50 treatment of the 3rd generation. In the 10th generation, diet had a significant effect on these parameters, with the highest intrinsic rate of increase of 0.17 day<sup>− 1</sup> and net reproductive rate of 20.0 eggs/individuals/generation, and the shortest mean generation time of 13.1 days in R50 treatment. Functional response of the predatory mite showed type II response with a searching efficiency of 0.02–0.05&#xa0;h<sup>− 1</sup> at different diets (densities) of <i>Tetranychus urticae</i> Koch and a handling time of 0.33–1.79&#xa0;h. The results of the present research can be useful for mass rearing of <i>A</i>. <i>swirskii</i> to control pest mites.</p>

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Life table parameters of the predatory mite Amblyseius swirskii on different diets of Rhizoglyphus robini and its functional response on Tetranychus urticae

  • 期刊论文

  • 发表日期：

    2025年4月10日

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  • Payam Amini,
  • Nafiseh Poorjavad,
  • Jahangir Khajehali,
  • Masoud M. Ardestani

摘要

The predatory mite Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) is important for controlling pests such as whiteflies, mites and thrips in greenhouses. Different commercial diets have been investigated for its mass production. A diet containing the pest mite species Rhizoglyphus robini Claparède (Acari: Acaridae) along with almond pollen (AP) was used for mass rearing of the predatory mite after three and ten generations and evaluated its effects on life table parameters. Four diets of R. robini were defined as follows: 30% R. robini + 70% AP (R30), 50% R. robini + 50% AP (R50), 80% R. robini + 20% AP (R80), and 100% R. robini mite (R100). The highest intrinsic rate of increase (rm) of 0.20 day− 1 and net reproductive rate (R0) of 16.1 eggs/individuals/generation, and the shortest mean generation time (T) of 13.6 days was observed in R50 treatment of the 3rd generation. In the 10th generation, diet had a significant effect on these parameters, with the highest intrinsic rate of increase of 0.17 day− 1 and net reproductive rate of 20.0 eggs/individuals/generation, and the shortest mean generation time of 13.1 days in R50 treatment. Functional response of the predatory mite showed type II response with a searching efficiency of 0.02–0.05 h− 1 at different diets (densities) of Tetranychus urticae Koch and a handling time of 0.33–1.79 h. The results of the present research can be useful for mass rearing of A. swirskii to control pest mites.