Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data

Heller, Klaus‐Gerhard; Baker, Edward; Ingrisch, Sigfrid; Korsunovskaya, O. S.; Liu, Chunxiang; Riede, Klaus; Warchałowska‐Śliwa, Elżbieta

doi:10.11646/zootaxa.5005.2.1

Cited by 8 publications

(7 citation statements)

References 32 publications

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“…At description of sound and vibratory signals we mainly follow bioacoustic terminology used Heller et al, 2021: calling song – spontaneous song produced by an isolated male. Syllable – the sound produced by one complete up (opening) and down (closing) stroke of the forewings (tegmina).…”

Section: Methodsmentioning

confidence: 99%

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in the one species

Korsunovskaya

Zhantiev

2022

Preprint

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The males of Mexican katydids Nesoecia nigrispina (Stal) produce calling songs and protest sounds using the same stridulatory apparatus as in most of the other Ensifera at the base of the elytra. It includes pars stridens on the upper elytron and plectrum on the lower. Calling sounds are 2−pulse series, repeated with a frequency of 2−3 per sec. Protest signals in the form of short trills from the same pulse duration males produce with tactile stimulation. The pulse repetition rate is almost three times higher than that of the calling sounds - up to 10 per sec. The frequency spectra of these signals have maxima in the band of 14−15 kHz. However, in addition to the sounds described, both males and females are capable to produce protest signals of the second type with the help of another sound apparatus, namely with the help of the wings. Insects with removed elytra are unable to produce an audible sound. Thus, the sound is produced by the friction of the wings on the elytra, but there are no specialized stridulatory structures on them. In females, in response to tactile stimulation, short clicks are recorded, which they make, apparently, by the mandibles. Vibrational signals at tremulation are emitted by individuals of both sexes during courtship and males, completing the calling signal cycle and after copulation. It is possible that vibrational signals are an additional factor in reproductive isolation in sympatric species, since the calling sound signals in representatives of the genus Nesoecia are similar and exhibit significant variability.

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Section: Methodsmentioning

confidence: 99%

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in the one species

Korsunovskaya

Zhantiev

2022

Preprint

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“…To describe sound and vibratory signals we mainly follow bioacoustic terminology used by Heller et al (2021) : calling song—spontaneous song produced by an isolated male. Syllable—the sound produced by one complete up (opening) and down (closing) stroke of the forewings (tegmina) or hind wings.…”

Section: Methodsmentioning

confidence: 99%

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in one species

Korsunovskaya

Zhantiev

2022

PeerJ

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The males of Mexican katydids Nesoecia nigrispina (Stal, 1873) produce calling songs and protest sounds using the typical stridulatory apparatus, situated, as in most of the other Ensifera, at the bases of the tegmina. It includes a stridulatory file on the upper tegmen and a plectrum on the lower one. The calling sounds, which are of two types (fast and slow), are two-syllabic series, with a repetition rate fluctuate within 3–4.5 s−1 (fast) and 1.2–2 s−1 (slow). After tactile stimulation, males produce protest signals in the form of short trills of uniform syllable duration. The syllable repetition rate is higher than that of the calling sounds: 7.7 s−1. The frequency spectra of these signals have maxima in the band of 14–15 kHz. However, in addition to the sounds described, both males and females are capable of producing protest signals of the second type, with the help of another sound apparatus, namely the hind wings. Apparently, the sound is produced by the friction of the hind wings on the lower tegmen. The dominant frequencies in the frequency spectra of these sounds are 40–60 kHz. In adults of both sexes and older nymphs, in response mainly to tactile stimulation, short clicks are recorded, which they produce, apparently, by the mandibles. Thus, N. nigrispina seems to have the most extensive acoustic repertoire among pseudophyllines and three means of emitting sound signals. Tremulatory substrate-borne vibrations are produced by individuals of both sexes during courtship and by males completing the calling signal cycle and after copulation. It is possible that vibrational signals are an additional factor in the reproductive isolation of sympatric species, since the calling sound signals in representatives of the genus Nesoecia are similar and exhibit considerable variability. The type and parameters of the calling signal used by the female during recognizing a conspecific mate remain unclear.

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“…Most of the 3200 species in the family Cicadidae produce sound by rapidly deforming tymbal membranes, producing series of loud clicking sounds that set the tymbals into resonance [ 2 – 4 ]. Many of these sounds are species-specific, and in some cases are key criteria for species identification [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptive representations of sound for automatic insect recognition

Faiß,

Stowell

2023

PLoS Comput Biol

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Insect population numbers and biodiversity have been rapidly declining with time, and monitoring these trends has become increasingly important for conservation measures to be effectively implemented. But monitoring methods are often invasive, time and resource intense, and prone to various biases. Many insect species produce characteristic sounds that can easily be detected and recorded without large cost or effort. Using deep learning methods, insect sounds from field recordings could be automatically detected and classified to monitor biodiversity and species distribution ranges. We implement this using recently published datasets of insect sounds (up to 66 species of Orthoptera and Cicadidae) and machine learning methods and evaluate their potential for acoustic insect monitoring. We compare the performance of the conventional spectrogram-based audio representation against LEAF, a new adaptive and waveform-based frontend. LEAF achieved better classification performance than the mel-spectrogram frontend by adapting its feature extraction parameters during training. This result is encouraging for future implementations of deep learning technology for automatic insect sound recognition, especially as larger datasets become available.

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Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data

Cited by 8 publications

References 32 publications

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in the one species

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in the one species

Acoustic and vibrational signaling in true katydid Nesoecia nigrispina: three means of sound production in one species

Adaptive representations of sound for automatic insect recognition

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