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<p>In the present study, two leafy liverworts, <i>Heteroscyphus hyalinus</i> (Steph.) A. Srivast. &amp; S.C. Srivast. and<i> Plagiochila asplenioides</i> (L.) Dum., from the Kumaun region of the North-West Himalayas, were selected to evaluate their insecticidal activity against an insect, <i>Sitophilus granarius</i> Linn., commonly known as the wheat weevil. The insecticidal potential was evaluated by using the Area Preference Method, No Choice Bioassay, and Antifeedant activity. An ANOVA test was applied using SPSS software for the analysis of insect repellency and mortality. The ethanolic extract of <i>H. hyalinus</i> showed a maximum percent (60 ± 4.05%) repellency, which falls under class III, with the maximum percent mortality of (80 ± 0.57%), whereas <i>P. asplenioides</i> showed a maximum percent (68.6 ± 0.07%) antifeedant activity. This study is the first experimental investigation into the insecticidal activities of Himalayan bryophytes. The present study suggests that these liverworts may serve as potential bio-insecticides, but future research is needed to confirm their practical applications.</p>

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Insecticidal activity of leafy liverworts, Heteroscyphus hyalinus (Steph.) A. Srivast. & S.C. Srivast. and Plagiochila asplenioides (L.) Dum. against, Sitophilus granarius Linn. - a common wheat weevil

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Neha Binwal,
  • Prachi Joshi,
  • S. D. Tewari,
  • Manju Kandpal

摘要

In the present study, two leafy liverworts, Heteroscyphus hyalinus (Steph.) A. Srivast. & S.C. Srivast. and Plagiochila asplenioides (L.) Dum., from the Kumaun region of the North-West Himalayas, were selected to evaluate their insecticidal activity against an insect, Sitophilus granarius Linn., commonly known as the wheat weevil. The insecticidal potential was evaluated by using the Area Preference Method, No Choice Bioassay, and Antifeedant activity. An ANOVA test was applied using SPSS software for the analysis of insect repellency and mortality. The ethanolic extract of H. hyalinus showed a maximum percent (60 ± 4.05%) repellency, which falls under class III, with the maximum percent mortality of (80 ± 0.57%), whereas P. asplenioides showed a maximum percent (68.6 ± 0.07%) antifeedant activity. This study is the first experimental investigation into the insecticidal activities of Himalayan bryophytes. The present study suggests that these liverworts may serve as potential bio-insecticides, but future research is needed to confirm their practical applications.