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<p>Jute semilooper, <i>Anomis sabulifera</i>&#xa0;Guenee, 1852, is a major and monophagous pest of jute. Epizootics in the field population of&#xa0;<i>A. sabulifera</i> caused by <i>Anomis sabulifera</i>&#xa0;nucleopolyhedrosis virus (<i>Ansa</i>NPV CRIJAF 1) necessitated isolation, identification and characterization while the efficacy was assessed both under laboratory and field conditions. Electron microscopic studies revealed that typical baculovirus occlusion bodies of type nucleopolyhedrosis virus with spherical and oval in shape and size ranging from 2.11 to 2.63&#xa0;µm with an average size of 2.37&#xa0;µm. Bioassay studies showed the larval mortality at low concentration of <i>Ansa</i>NPV i.e. 3.75 × 10<sup>2</sup> POBs/ml. Sequence data generated from amplification of <i>Ansa</i>NPV CRIJAF 1 strain polyhedrin,&#xa0;<i>polh</i>&#xa0;gene was deposited in GenBank (Accession number: MT863564). Pooled mean of larval reduction in the field experiment revealed that&#xa0;<i>Ansa</i>NPV CRIJAF 1 caused 41.88%, 56.10% and 82.13% larval reductions, respectively at 2, 4 and 7&#xa0;days after spray. The present study revealed that foliar application of <i>Ansa</i>NPV CRIJAF 1 strain was very effective in causing mortality and can be used as an effective biopesticide in the integrated pest management of&#xa0;<i>A. sabulifera</i>.</p>

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Characterization and Field Evaluation of Anomis sabulifera Nucleopolyhedrosis Virus (AnsaNPV) CRIJAF 1 Strain Causing Epizootics in Jute Semilooper, Anomis sabulifera Guenee, 1852 Infesting Jute, Corchorus olitorius in India

  • 期刊论文

  • 发表日期：

    2025年12月7日

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  • Veegala Ramesh Babu,
  • Chinmay Biswas,
  • Rakesh Bhowmick,
  • R. Thribhuvan,
  • Nurnabi Mehrul Alam

摘要

Jute semilooper, Anomis sabulifera Guenee, 1852, is a major and monophagous pest of jute. Epizootics in the field population of A. sabulifera caused by Anomis sabulifera nucleopolyhedrosis virus (AnsaNPV CRIJAF 1) necessitated isolation, identification and characterization while the efficacy was assessed both under laboratory and field conditions. Electron microscopic studies revealed that typical baculovirus occlusion bodies of type nucleopolyhedrosis virus with spherical and oval in shape and size ranging from 2.11 to 2.63 µm with an average size of 2.37 µm. Bioassay studies showed the larval mortality at low concentration of AnsaNPV i.e. 3.75 × 102 POBs/ml. Sequence data generated from amplification of AnsaNPV CRIJAF 1 strain polyhedrin, polh gene was deposited in GenBank (Accession number: MT863564). Pooled mean of larval reduction in the field experiment revealed that AnsaNPV CRIJAF 1 caused 41.88%, 56.10% and 82.13% larval reductions, respectively at 2, 4 and 7 days after spray. The present study revealed that foliar application of AnsaNPV CRIJAF 1 strain was very effective in causing mortality and can be used as an effective biopesticide in the integrated pest management of A. sabulifera.