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<p>The “pupa ring” formed by the Asian corn borer <i>Ostrinia furnacalis</i> (Guenée) is a fascinating phenomenon discovered during the course of this experiment. The structure consists of approximately 2 to 10 pupae connected by their tails, raising speculation about possible underlying signal communication mechanisms. As a major pest of corn crops, the Asian corn borer has significant agricultural importance. Understanding its behavioral responses to chemical stimuli is crucial for exploring its ecological traits and provides valuable data to support ecological chemical control strategies. In this study, we extracted cuticular volatiles from the larvae and pupae of the Asian corn borer, evaluated their taxis behavior, and investigated the effect of these volatiles on pupa ring formation in fifth instar larvae. The results showed that volatiles from female larvae and pupae were more attractive, and those from female larvae were particularly effective at inducing pupa ring formation. This research seeks to explore the underlying causes of this remarkable behavior and offers plausible hypotheses to explain the formation of the pupa ring.</p>

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The larval aggregation mechanism of the Asian corn borer and the conjecture on the formation of the pupa ring

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Haichao Wu,
  • Linghao Kong,
  • Yi Li,
  • Bo Li,
  • Ge Wu,
  • Rizhao Chen

摘要

The “pupa ring” formed by the Asian corn borer Ostrinia furnacalis (Guenée) is a fascinating phenomenon discovered during the course of this experiment. The structure consists of approximately 2 to 10 pupae connected by their tails, raising speculation about possible underlying signal communication mechanisms. As a major pest of corn crops, the Asian corn borer has significant agricultural importance. Understanding its behavioral responses to chemical stimuli is crucial for exploring its ecological traits and provides valuable data to support ecological chemical control strategies. In this study, we extracted cuticular volatiles from the larvae and pupae of the Asian corn borer, evaluated their taxis behavior, and investigated the effect of these volatiles on pupa ring formation in fifth instar larvae. The results showed that volatiles from female larvae and pupae were more attractive, and those from female larvae were particularly effective at inducing pupa ring formation. This research seeks to explore the underlying causes of this remarkable behavior and offers plausible hypotheses to explain the formation of the pupa ring.