The ground offers acoustic efficiency gains for crickets and other calling animals

Brandt, Erin E.; Duke, Sara E.; Wang, Honglin; Mhatre, Natasha

doi:10.1101/2022.11.13.516353

Cited by 1 publication

(1 citation statement)

References 112 publications

(202 reference statements)

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“…Data used to generate figures have been deposited in Dryad ( https://doi.org/10.5061/dryad.v15dv420b ) ( 74 ).…”

Section: Data Materials and Software Availabilitymentioning

confidence: 99%

The ground offers acoustic efficiency gains for crickets and other calling animals

Brandt,

Duke,

Wang

et al. 2023

Proc. Natl. Acad. Sci. U.S.A.

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Male crickets attract females by producing calls with their forewings. Louder calls travel further and are more effective at attracting mates. However, crickets are much smaller than the wavelength of their call, and this limits their power output. A small group called tree crickets make acoustic tools called baffles which reduce acoustic short-circuiting, a source of dipole inefficiency. Here, we ask why baffling is uncommon among crickets. We hypothesize that baffling may be rare because like other tools they offer insufficient advantage for most species. To test this, we modelled the calling efficiencies of crickets within the full space of possible natural wing sizes and call frequencies, in multiple acoustic environments. We then generated efficiency landscapes, within which we plotted 112 cricket species across 7 phylogenetic clades. We found that all sampled crickets, in all conditions, could gain efficiency from tool use. Surprisingly, we also found that calling from the ground significantly increased efficiency, with or without a baffle, by as much as an order of magnitude. We found that the ground provides some reduction of acoustic short-circuiting but also halves the air volume within which sound is radiated. It simultaneously reflects sound upwards, allowing recapture of a significant amount of acoustic energy through constructive interference. Thus, using the ground as a reflective baffle is an effective strategy for increasing calling efficiency. Indeed, theory suggests that this increase in efficiency is accessible not just to crickets but to all acoustically communicating animals whether they are dipole or monopole sound sources.

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“…Data used to generate figures have been deposited in Dryad ( https://doi.org/10.5061/dryad.v15dv420b ) ( 74 ).…”

Section: Data Materials and Software Availabilitymentioning

confidence: 99%

The ground offers acoustic efficiency gains for crickets and other calling animals

Brandt,

Duke,

Wang

et al. 2023

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

show abstract

The ground offers acoustic efficiency gains for crickets and other calling animals

Cited by 1 publication

References 112 publications

The ground offers acoustic efficiency gains for crickets and other calling animals

The ground offers acoustic efficiency gains for crickets and other calling animals

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