Scale effects and constraints for sound production in katydids (Orthoptera: Tettigoniidae): generator size constrains signal parameters

F Montealegre-Z

Research output: Contribution to journalArticle (Academic Journal)peer-review

61 Citations (Scopus)

Abstract

Male katydids (Orthoptera: Tettigoniidae) produce mating calls by rubbing the wings together, using specialized structures in their forewings (stridulatory file, scraper and mirror). A large proportion of species (ca. 66%) reported in the literature produces ultrasonic signals as principal output. Relationships among body size, generator structures and the acoustic parameters carrier frequency (fc) and pulse duration (pd), were studied in 58 tropical species that use pure-tone signals. A comparative analysis, based on the only available katydid phylogeny, shows how changes in sound generator form are related to changes in fc and pd. Anatomical changes of the sound generator that might have been selected via fc and pd are mirror size, file length and number of file teeth. Selection for structures of the stridulatory apparatus that enhance wing mechanics via file-teeth and scraper morphology was crucial in the evolution of ultrasonic signals in the family Tettigoniidae.
Translated title of the contributionScale effects and constraints for sound production in katydids (Orthoptera: Tettigoniidae): generator size constrains signal parameters
Original languageEnglish
Pages (from-to)355 - 366
Number of pages12
JournalJournal of Evolutionary Biology
Volume22
DOIs
Publication statusPublished - Feb 2009

Bibliographical note

Author of Publication Reviewed: Montealegre-Z, F
Publisher: EUROPEAN SOCIETY FOR EVOLUTIONARY BIOLOGY

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