Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp &amp; Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species

Hemp, Claudia; Heller, Klaus‐Gerhard; Warchałowska‐Śliwa, Elżbieta; Grzywacz, Beata; Hemp, Andreas

doi:10.1007/s13127-014-0194-2

Cited by 19 publications

(10 citation statements)

References 33 publications

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“…For example, in Afroagraecia brachyptera , the left mirror is more triangular in shape making width dimensions harder to measure compared to other species (see Fig. 11: Hemp et al ., ). Hence, we believe mirror area is a better measure to account for shape variance in mirrors.…”

Section: Discussionmentioning

confidence: 97%

“…family Tettigoniidae (Rust et al, 1999;Gwynne, 2001;Montealegre-Z, 2005). Hemp et al (2015) studied the scaling of length and width of left (N = 7 species) and right (N = 4 species) mirrors as predictors of CF in Afroanthracites and Afroagraecia species. They found a high correlation for the length of left and right mirrors but lower for the width.…”

Section: Discussionmentioning

confidence: 99%

“…or Tettigonia spp., and in many species of Saginae, for example, the left mirror exhibits some level of specialization for sound radiation. Not surprisingly, males of these species tend to produce broadband calling songs (Morris & Pipher, 1967, 1972Pipher & Morris, 1974;Morris et al, 1975;Heller, 1988;Jatho et al, 1992Jatho et al, , 1994Morris & Mason, 1995;Hemp et al, 2015;Lemonnier-Darcemont et al, 2016). Even when the left stridulatory cell shows some levels of activity, high levels of mechanical asymmetry between both left and right wings are observed, with maximum amplitude exhibited by the right stridulatory area (Montealegre-Z & Mason, 2005;Montealegre-Z & Postles, 2010;Sarria-S et al, 2016;Chivers et al, 2017;Jonsson et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

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Morphological determinants of signal carrier frequency in katydids (Orthoptera): a comparative analysis using biophysical evidence of wing vibration

Montealegre‐Z

Ogden

Jonsson

et al. 2017

J of Evolutionary Biology

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Male katydids produce mating calls by stridulation using specialized structures on the forewings. The right wing (RW) bears a scraper connected to a drum-like cell known as the mirror and a left wing (LW) that overlaps the RW and bears a serrated vein on the ventral side, the stridulatory file. Sound is generated with the scraper sweeping across the file, producing vibrations that are amplified by the mirror. Using this sound generator, katydids exploit a range of song carrier frequencies (CF) unsurpassed by any other insect group, with species singing as low as 600 Hz and others as high as 150 kHz. Sound generator size has been shown to scale negatively with CF, but such observations derive from studies based on few species, without phylogenetic control, and/or using only the RW mirror length. We carried out a phylogenetic comparative analysis involving 94 species of katydids to study the relationship between LW and RW components of the sound generator and the CF of the male's mating call, while taking into account body size and phylogenetic relationships. The results showed that CF negatively scaled with all morphological measures, but was most strongly related to components of the sound generation system (file, LW and RW mirrors). Interestingly, the LW mirror (reduced and nonfunctional) predicted CF more accurately than the RW mirror, and body size is not a reliable CF predictor. Mathematical models were verified on known species for predicting CF in species for which sound is unknown (e.g. fossils or museum specimens)

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Morphological determinants of signal carrier frequency in katydids (Orthoptera): a comparative analysis using biophysical evidence of wing vibration

Montealegre‐Z

Ogden

Jonsson

et al. 2017

J of Evolutionary Biology

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“…For others (e.g. Walker and Funk 2014, Hemp et al 2015) the publications contain detailed song descriptions, while the songs are either deposited outside OSF, or are not accessible at all. However, OSF already contains links, e.g.…”

Section: Present Knowledge Of Orthoptera Songs and Coverage In Sound mentioning

confidence: 99%

Acoustic profiling of Orthoptera: present state and future needs

Riede¹

2018

JOR

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Bioacoustic monitoring and classification of animal communication signals has developed into a powerful tool for measuring and monitoring species diversity within complex communities and habitats. The high number of stridulating species among Orthoptera allows their detection and classification in a non-invasive and economic way, particularly in habitats where visual observations are difficult or even impossible, such as tropical rainforests. Major sound archives were queried for Orthoptera songs, with special emphasis on usability as reference training libraries for computer algorithms. Orthoptera songs are highly stereotyped, reliable taxonomic features. However, exploitation of songs for acoustic profiling is limited by the small number of reference recordings: existing song libraries represent only about 1000 species, mainly from Europe and North America, covering less than 10% of extant stridulating Orthoptera species. Available databases are fragmented and lack tools for song annotation and efficient feature-based searching. Results from recent bioacoustic surveys illustrate the potential of the method, but also the challenges and bottlenecks impeding further progress. A major problem is time-consuming data analysis of recordings. Computer-aided identification software exists for classification and identification of cricket and grasshopper songs, but these tools are still far from practical for field application.A framework for acoustic profiling of Orthoptera should consist of the following components: (1) Protocols for standardized acoustic sampling, at species and community levels, using acoustic data loggers for autonomous long-term recordings; (2) Open access to and efficient management of song data and voucher specimens, involving the Orthoptera Species File (OSF) and Global Biodiversity Information Facility (GBIF); (3) An infrastructure for automatized analysis and song classification; and (4) Complementation and improvement of Orthoptera sound libraries using OSF as the taxonomic backbone and repository for representative song recordings. Taxonomists should be encouraged, or even obliged, to deposit original recordings, particularly if they form part of species descriptions or revisions. Citation: Riede K (2018) Acoustic profiling of Orthoptera: present state and future needs. Journal of Orthoptera Research 27(2): 203-215. https://doi.

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“…With a considerable number of 243 recordings imported from DORSA, OSF has a similar bias towards European species. Addition 244 of songs from newly described species will sooner or later compensate this unbalance, but 245 addition of songs from newly described species grows slowly: According to a "complex search" or not accessible at all (Hemp et al, 2015). However, OSF already contains links, e. g. to 253…”

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confidence: 99%

Acoustic profiling of Orthoptera for species monitoring and discovery: present state and future needs

Riede

2017

Preprint

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Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species

Abstract: The flightless Agraeciini genus Afroanthracites, a genus restricted to East Africa, is reviewed and two new species are described. Exemplary for the genus

Cited by 19 publications

References 33 publications

Morphological determinants of signal carrier frequency in katydids (Orthoptera): a comparative analysis using biophysical evidence of wing vibration

Morphological determinants of signal carrier frequency in katydids (Orthoptera): a comparative analysis using biophysical evidence of wing vibration

Acoustic profiling of Orthoptera: present state and future needs

Acoustic profiling of Orthoptera for species monitoring and discovery: present state and future needs

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