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Identification of a colony- and dose-dependent worker aggregation pheromone in the subterranean termite Reticulitermes virginicus
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Identification of a colony- and dose-dependent worker aggregation pheromone in the subterranean termite Reticulitermes virginicus
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Journal Article
Identification of a colony- and dose-dependent worker aggregation pheromone in the subterranean termite Reticulitermes virginicus
2024
Overview
Collective behaviors of social insects are often regulated by pheromones. In subterranean termites, some workers forage for and exploit decaying wood for new food resources while forming tunnels from their nest. Colonizing new food resources requires workers to build and disinfect tunnels and chambers inside the nest and ingest decaying wood; therefore subterranean termite colonies should have mechanisms to establish and maintain groups of workers to perform these functions. Recently, an aggregation pheromone was identified in workers of the termite
Reticulitermes speratus
, which induces quick attraction of nestmate workers and prolonged aggregation to the site of attraction. In this study, we extended this work to another species of
Reticulitermes
and identified a worker aggregation pheromone in the termite
R. virginicus
. GC–MS analysis and bioassays demonstrated that this pheromone consists of 3-octanone, 3-octanol, and palmitic acid and shows a colony-specific, dose-dependent attractant response but not an arrestant response. Furthermore, these pheromone components were most likely emitted from the surface of the body. This suggests that aggregation pheromone composition and function differ significantly among termite species, even within the same genus. This study advances our understanding of the regulatory mechanisms of termite aggregation behavior.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
