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<p>The South American tomato pinworm, <i>Tuta absoluta</i> (Lepidoptera: Gelechiidae), is a devastating invasive pest of tomato (<i>Solanum lycopersicum</i>). To evaluate candidate female-oriented semiochemicals, we examined the electroantennogram (EAG) activity of ten tomato-associated volatiles selected from previous reports. The compound 1-nonanol was selected as a candidate based on its relatively strong EAG activity and was subsequently assessed for its effects on olfaction, orientation, and oviposition. These findings indicate that 1-nonanol elicits female-biased attraction and stimulates oviposition under laboratory conditions. However, its ecological relevance within natural tomato volatile blends and its field performance require further validation before it can be developed as a female-oriented IPM component.</p>

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Electrophysiological and Behavioral Responses of Tuta absoluta to the Tomato-Associated Volatile 1-Nonanol

  • 期刊论文

  • 发表日期：

    2026年6月24日

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  • Weifeng Wang,
  • Bo Xu,
  • Xiaolan Ou,
  • Yanhui Lu,
  • Jingsong Kong,
  • Guifen Zhang,
  • Cong Huang,
  • Yibo Zhang,
  • Fanghao Wan

摘要

The South American tomato pinworm, Tuta absoluta (Lepidoptera: Gelechiidae), is a devastating invasive pest of tomato (Solanum lycopersicum). To evaluate candidate female-oriented semiochemicals, we examined the electroantennogram (EAG) activity of ten tomato-associated volatiles selected from previous reports. The compound 1-nonanol was selected as a candidate based on its relatively strong EAG activity and was subsequently assessed for its effects on olfaction, orientation, and oviposition. These findings indicate that 1-nonanol elicits female-biased attraction and stimulates oviposition under laboratory conditions. However, its ecological relevance within natural tomato volatile blends and its field performance require further validation before it can be developed as a female-oriented IPM component.