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16 May 2024 Toxicity-Related Behavior in the Invasive Argentine Ant Linepithema humile Mayr in Response to Fipronil Exposure1
Yugo Seko, Naoto Ishiwaka, Yuki Morikawa, Daisuke Hayasaka
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Abstract

Ants self-organize through interactions between individuals (nestmates). Therefore, it is possible that slight changes in individual behavior play an important role in interactions between individuals and subsequently lead to colony-level responses to environmental changes. While conducting research on the control/eradication of the invasive Argentine ant Linepithema humile Mayr, we observed an unusual behavior (i.e., a mandible-opening behavior: a toxicity-related behavior) displayed by ant workers after exposure to the insecticide fipronil until death. Although this phenomenon might represent a symptom of exposure to a toxin, it is possible that mandible opening behaviors are performed for the secretion of pheromones. Therefore, further studies are needed to clarify why fipronil-exposed workers exhibit mandible-opening behavior.

Yugo Seko, Naoto Ishiwaka, Yuki Morikawa, and Daisuke Hayasaka "Toxicity-Related Behavior in the Invasive Argentine Ant Linepithema humile Mayr in Response to Fipronil Exposure1," Entomological News 131(3), 140-145, (16 May 2024). https://doi.org/10.3157/021.131.0302
Received: 25 August 2021; Accepted: 3 October 2021; Published: 16 May 2024
KEYWORDS
acute toxicity
animal behavior
behavioral ecology
invasive species
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