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<p>This research investigated the development patterns, reproduction and predatory potential of <i>Apertochrysa astur</i> Banks (Neuroptera: Chrysopidae) fed on nymphs of <i>Aphis gossypii</i> raised on <i>Gossypium hirsutum</i> L. (cotton) and <i>Hibiscus sabdariffa</i> L. (mesta). The predator exhibited higher survival rates and shorter developmental durations when fed aphids reared on cotton rather than those reared on mesta. The population growth parameters, including the intrinsic rate of increase (<i>r</i>), finite rate of increase (<i>λ</i>) and net reproductive rate (<i>R</i><sub>0</sub>), were also greater when fed on cotton aphids (<i>λ</i> = 1.1028&#xa0;day<sup>−1</sup>; <i>R</i><sub>0</sub> = 134.94 offsprings<i>; r</i> = 0.0978&#xa0;day<sup>−1</sup>), demonstrating the better suitability of cotton as a host plant. Compared with mesta aphids (<i>C</i><sub>0</sub> = 432 aphids/individual), <i>A. astur</i> reared on cotton aphids (<i>C</i><sub>0</sub> = 475.51 aphids/individual) had higher predation rates. Population and predation projections showed faster growth and higher consumption efficiency for <i>A. astur</i> fed on cotton aphids compared to mesta aphids. These findings emphasize the critical role of prey quality and host plant suitability in enhancing the biological control potential of the generalist predator <i>A. astur.</i> This study underscores the importance of understanding plant–prey–predator interactions to develop effective and sustainable pest management strategies in agroecosystems.</p>

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Host plant–herbivore–predator interaction effects and projection estimates of Apertochrysa astur Banks reared on Aphis gossypii Glover

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • M. Shashikala,
  • B. V. Jayanth,
  • Gouranga Saw,
  • Gundreddy Rajareddy,
  • Edula Udaykumar,
  • Bishwajeet Paul

摘要

This research investigated the development patterns, reproduction and predatory potential of Apertochrysa astur Banks (Neuroptera: Chrysopidae) fed on nymphs of Aphis gossypii raised on Gossypium hirsutum L. (cotton) and Hibiscus sabdariffa L. (mesta). The predator exhibited higher survival rates and shorter developmental durations when fed aphids reared on cotton rather than those reared on mesta. The population growth parameters, including the intrinsic rate of increase (r), finite rate of increase (λ) and net reproductive rate (R0), were also greater when fed on cotton aphids (λ = 1.1028 day−1; R0 = 134.94 offsprings; r = 0.0978 day−1), demonstrating the better suitability of cotton as a host plant. Compared with mesta aphids (C0 = 432 aphids/individual), A. astur reared on cotton aphids (C0 = 475.51 aphids/individual) had higher predation rates. Population and predation projections showed faster growth and higher consumption efficiency for A. astur fed on cotton aphids compared to mesta aphids. These findings emphasize the critical role of prey quality and host plant suitability in enhancing the biological control potential of the generalist predator A. astur. This study underscores the importance of understanding plant–prey–predator interactions to develop effective and sustainable pest management strategies in agroecosystems.