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Background <p><i>Meteorus pulchricornis</i> (Wesmael) (Hymenoptera: Braconidae) is an important parasitoid of various lepidopteran pests with promising applications in biological control. However, its large-scale application has been hindered by the challenges associated with rearing it on natural hosts. This study investigates the use of <i>Plodia interpunctella</i> (Hübner) (Lepidoptera: Pyralidae) as a suitable alternative host for <i>M. pulchricornis</i>.</p> Results <p>While parasitoids reared on <i>P. interpunctella</i> showed slight reductions in body size (3.87 vs. 4.60&#xa0;mm), fecundity (17.10 vs. 26.70 eggs) and adult longevity (16.63 vs. 17.73 days) compared to those reared on the natural host <i>Spodoptera frugiperda</i>, key performance indicators—such as parasitism rate (48.00 vs. 50.00%), cocoon formation rate (90.83 vs. 91.67%) and adult emergence rate (93.33 vs. 94.17%)—did not differ significantly between the two host treatments.</p> Conclusion <p><i>P. interpunctella</i> provides a suitable alternative host for rearing <i>M. pulchricornis</i>, thereby offering substantial potential for the application of this parasitoid in large-scale biological control programs targeting lepidopteran pests.</p>

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Plodia interpunctella as the suitable alternative host for mass rearing of Meteorus pulchricornis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月26日

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  • Rui Shi,
  • Jiayan Lu,
  • Aimin Shi,
  • Xiaohan Shu,
  • Lingzhi Yang,
  • Pingting Wang,
  • Yan Yan,
  • Zhenxiao Li,
  • Qiong Wu,
  • Zhizhi Wang,
  • Xiqian Ye,
  • Xuexin Chen,
  • Pu Tang

摘要

Background

Meteorus pulchricornis (Wesmael) (Hymenoptera: Braconidae) is an important parasitoid of various lepidopteran pests with promising applications in biological control. However, its large-scale application has been hindered by the challenges associated with rearing it on natural hosts. This study investigates the use of Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) as a suitable alternative host for M. pulchricornis.

Results

While parasitoids reared on P. interpunctella showed slight reductions in body size (3.87 vs. 4.60 mm), fecundity (17.10 vs. 26.70 eggs) and adult longevity (16.63 vs. 17.73 days) compared to those reared on the natural host Spodoptera frugiperda, key performance indicators—such as parasitism rate (48.00 vs. 50.00%), cocoon formation rate (90.83 vs. 91.67%) and adult emergence rate (93.33 vs. 94.17%)—did not differ significantly between the two host treatments.

Conclusion

P. interpunctella provides a suitable alternative host for rearing M. pulchricornis, thereby offering substantial potential for the application of this parasitoid in large-scale biological control programs targeting lepidopteran pests.