Scale effects and constraints for sound production in katydids (Orthoptera: Tettigoniidae): correlated evolution between morphology and signal parameters

Montealegre‐Z, Fernando

doi:10.1111/j.1420-9101.2008.01652.x

Cited by 73 publications

(66 citation statements)

References 58 publications

(104 reference statements)

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“…These morphological wing characteristics result in an obligatory wing arrangement of 'left-over-right' for stridulatory sound production. Specific to bush crickets is the widespread use of ultrasonic frequencies in the calls; indeed ∼70% of species use ultrasounds in the range of 20-150 kHz (Morris et al, 1994;Montealegre-Z, 2009;Sarria-S et al, 2014), with some exceptions singing in the sonic range as low as 600 Hz (Heller, 1995). It has been suggested that the production of tonal calls at high ultrasonic frequencies is facilitated by the single radiating structure in this group, whereby there is no need to synchronize radiating cells on two wings for coherent sound generation Gu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Functional morphology of tegmina-based stridulation in the relict speciesCyphoderris monstrosa(Orthoptera: Ensifera: Prophalangopsidae)

Chivers

Béthoux²,

Sarria-S

et al. 2017

Journal of Experimental Biology

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Male grigs, bush crickets and crickets produce mating calls by tegminal stridulation: the scraping together of modified forewings functioning as sound generators. Bush crickets (Tettigoniidae) and crickets (Gryllinae) diverged some 240 million years ago, with each lineage developing unique characteristics in wing morphology and the associated mechanics of stridulation. The grigs (Prophalangopsidae), a relict lineage more closely related to bush crickets than to crickets, are believed to retain plesiomorphic features of wing morphology. The wing cells widely involved in sound production, such as the harp and mirror, are comparatively small, poorly delimited and/or partially filled with cross-veins. Such morphology is similarly observed in the earliest stridulating ensiferans, for which stridulatory mechanics remains poorly understood. The grigs, therefore, are of major importance to investigate the early evolutionary stages of tegminal stridulation, a critical innovation in the evolution of the Orthoptera. The aim of this study is to appreciate the degree of specialization on grig forewings, through identification of sound radiating areas and their properties. For well-grounded comparisons, homologies in wing venation (and associated areas) of grigs and bush crickets are re-evaluated. Then, using direct evidence, this study confirms the mirror cell, in association with two other areas (termed 'neck' and 'pre-mirror'), as the acoustic resonator in the grig Cyphoderris monstrosa. Despite the use of largely symmetrical resonators, as found in field crickets, analogous features of stridulatory mechanics are observed between C. monstrosa and bush crickets. Both morphology and function in grigs represents transitional stages between unspecialized forewings and derived conditions observed in modern species.

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Section: Introductionmentioning

confidence: 99%

Functional morphology of tegmina-based stridulation in the relict speciesCyphoderris monstrosa(Orthoptera: Ensifera: Prophalangopsidae)

Chivers

Béthoux²,

Sarria-S

et al. 2017

Journal of Experimental Biology

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“…Many species of bushcrickets communicate using ultrasonic channels, with pure tone ultrasound signals prevailing in neotropical species (Montealegre-Z, 2009). Pure tone signals seem to be common in species of the genus Copiphora (Montealegre-Z and Postles, 2010;Morris, 1980;Morris et al, 1994), with most of the energy occurring in the ultrasonic range (Montealegre-Z, 2009). …”

Section: Introductionmentioning

confidence: 99%

Wing mechanics, vibrational and acoustic communication in a new bush-cricket species of the genus Copiphora (Orthoptera: Tettigoniidae) from Colombia

Sarria-S

Buxton

Jonsson

et al. 2016

Zoologischer Anzeiger - A Journal of Comparative Zoology

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Male bush-crickets produce acoustic signals by wing stridulation to call females. Several species also alternate vibratory signals with acoustic calls for intraspecific communication, a way to reduce risk of detection by eavesdropping predators. Both modes of communication have been documented mostly in neotropical species, for example in the genus Copiphora. In this article, we studied vibratory and acoustic signals and the biophysics of wing resonance in C. vigorosa, a new species from the rainforest of Colombia. Different from other Copiphora species in which the acoustic signals have been properly documented as pure tones, C. vigorosa males produce a complex modulated broadband call peaking at ca. 30 kHz. Such a broadband spectrum results from several wing resonances activated simultaneously during stridulation. Since males of this species do rarely sing, we also report that substratum vibrations have been adopted in this species as a persistent communication channel. Wing resonances and substratum vibrations were measured using a μ-scanning Laser Doppler Vibrometry. We found that the stridulatory areas of both wings exhibit a relatively broad-frequency response and the combined vibration outputs fits with the calling song spectrum breadth. Under laboratory conditions the calling song duty cycle is very low and males spend more time tremulating than singing

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“…Studies on mechanisms of sound production continuously contribute to a better understanding of animal communication, its role in life history and its evolutionary pathways (Stuart and Currie, 2002;Montealegre-Z, 2009;Leal and Losos, 2010). Whilst basic or generic mechanisms of communication can be investigated in model species, important comparative information on specialised, highly evolved mechanisms can be obtained from species diverging from the norm.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of high frequency song generation in brachypterous crickets and the role of ghost frequencies

Robillard

Montealegre‐Z

Desutter‐Grandcolas

et al. 2013

Journal of Experimental Biology

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SUMMARYSound production in crickets relies on stridulation, the well-understood rubbing together of a pair of specialised wings. As the file of one wing slides over the scraper of the other, a series of rhythmic impacts causes harmonic oscillations, usually resulting in the radiation of pure tones delivered at low frequencies (2-8kHz). In the short-winged crickets of the Lebinthini tribe, acoustic communication relies on signals with remarkably high frequencies (>8kHz) and rich harmonic content. Using several species of the subfamily Eneopterinae, we characterised the morphological and mechanical specialisations supporting the production of high frequencies, and demonstrated that higher harmonics are exploited as dominant frequencies. These specialisations affect the structure of the stridulatory file, the motor control of stridulation and the resonance of the sound radiator. We placed these specialisations in a phylogenetic framework and show that they serve to exploit high-frequency vibrational modes pre-existing in the phylogenetic ancestor. In Eneopterinae, the lower frequency components are harmonically related to the dominant peak, suggesting they are relicts of ancestral carrier frequencies. Yet, such ghost frequencies still occur in the wingsʼ free resonances, highlighting the fundamental mechanical constraints of sound radiation. These results support the hypothesis that such highfrequency songs evolved stepwise, by a form of punctuated evolution that could be related to functional constraints, rather than by only the progressive increase of the ancestral fundamental frequency. Supplementary material available online at

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Scale effects and constraints for sound production in katydids (Orthoptera: Tettigoniidae): correlated evolution between morphology and signal parameters

Cited by 73 publications

References 58 publications

Functional morphology of tegmina-based stridulation in the relict speciesCyphoderris monstrosa(Orthoptera: Ensifera: Prophalangopsidae)

Functional morphology of tegmina-based stridulation in the relict speciesCyphoderris monstrosa(Orthoptera: Ensifera: Prophalangopsidae)

Wing mechanics, vibrational and acoustic communication in a new bush-cricket species of the genus Copiphora (Orthoptera: Tettigoniidae) from Colombia

Mechanisms of high frequency song generation in brachypterous crickets and the role of ghost frequencies

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