Variation in plant leaf traits affects transmission and detectability of herbivore vibrational cues

Ecology and Evolution
Estefania VelillaWouter Halfwerk

Abstract

Many insects use plant-borne vibrations to obtain important information about their environment, such as where to find a mate or a prey, or when to avoid a predator. Plant species can differ in the way they vibrate, possibly affecting the reliability of information, and ultimately the decisions that are made by animals based on this information. We examined whether the production, transmission, and possible perception of plant-borne vibrational cues is affected by variation in leaf traits. We recorded vibrations of 69 Spodoptera exigua caterpillars foraging on four plant species that differed widely in their leaf traits (cabbage, beetroot, sunflower, and corn). We carried out a transmission and an airborne noise absorption experiment to assess whether leaf traits influence amplitude and frequency characteristics, and background noise levels of vibrational chewing cues. Our results reveal that species-specific leaf traits can influence transmission and potentially perception of herbivore-induced chewing vibrations. Experimentally-induced vibrations attenuated stronger on plants with thicker leaves. Amplitude and frequency characteristics of chewing vibrations measured near a chewing caterpillar were, however, not affected by lea...Continue Reading

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Citations

Sep 20, 2021·Journal of Experimental Botany·Mario Vallejo-Marín

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Software Mentioned

lsmeans
R
ggplot2
R package “ MuMIn ”
RStudio
R Core
Lme4
Seewave package
ImageJ
Raven Pro

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