ArticleBiology letters2025
Divergence in cuticular wax profiles generates partial behavioural isolation between leaf beetle populations with different dispersal traits.
Article in Biology letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Abstract
Sex pheromones are among the most studied insect mating signals, with their extensive diversity underscoring their crucial role in promoting behavioural isolation during speciation. In Chrysomelidae, cuticular wax (CW), a hydrophobic layer covering the insect cuticle, functions as a mating signal and potentially facilitates behavioural isolation. Male leaf beetles use female CW as a mating signal, and their species-specific profiles prevent heterospecific matings, indicating that divergence in CW profiles may promote reproductive isolation and, hence, contribute to speciation. However, the role of CW as an isolating barrier remains unclear owing to limited knowledge regarding intraspecific divergence in female CW and its coevolution with male preferences. Through chemical analysis and behavioural experiments, we demonstrated that intraspecific divergence in female CW contributes to partial behavioural isolation between leaf beetle populations with different dispersal traits: the flight-capable macropterous and flightless brachypterous forms of
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