The effect of fumigation with microencapsulated allyl isothiocyanate in a gas-barrier bag against Solenopsis invicta (Hymenoptera: Formicidae)

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<jats:title>Abstract</jats:title><jats:p>Red imported fire ants, <jats:italic>Solenopsis invicta</jats:italic> Buren (Hymenoptera: Formicidae), which are among the most harmful alien ants, were first detected in Japan in a shipping container from China in May 2017, and continue to enter Japan via this trade pathway. Fumigation is one of the most effective ways to eliminate <jats:italic>S. invicta</jats:italic> from goods transported in containers. The present study is the first to evaluate the effect of fumigation with allyl isothiocyanate (AITC) against <jats:italic>S. invicta</jats:italic>. Fumigation using microencapsulated AITC pellets in a gas-barrier bag for 24 h completely killed <jats:italic>S. invicta</jats:italic>. Furthermore, our fumigation system was able to maintain a high concentration of AITC vapor for at least 13 days. AITC, a naturally occurring compound in wasabi [<jats:italic>Eutrema japonicum</jats:italic> (Miq.) Koidz], has been demonstrated to be safe for humans and the environment, but its use as a fumigant is limited by its strong volatility and pungency. However, its encapsulation solves this problem by allowing controlled vapor release. Thus, the use of microencapsulated AITC in combination with a gas-barrier bag has considerable potential to provide an effective and easy-to-use protocol for fumigation of <jats:italic>S. invicta</jats:italic>.</jats:p>

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  • Applied entomology and zoology

    Applied entomology and zoology 55 (3), 345-350, 2020-08

    Tokyo : The Japanese Society of Applied Entomology and Zoology ; 1966-

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