What the buzz was all about: Superfast song muscles rattle the tymbals of male periodical cicadas

Patrick C. Nahirney, Jeffrey G. Forbes, H. Douglas Morris, Susanne C. Chock, Kuan Wang

研究成果: 雜誌貢獻文章同行評審

16 引文 斯高帕斯(Scopus)

摘要

Male cicadas produce mating calls by oscillating a pair of superfast tymbal muscles in their anterior abdominal cavity that pull on and buckle stiff-ribbed cuticular tymbal membranes located beneath the folded wings. The functional anatomy and rattling of the tymbal organ in 17 yr periodical cicada, Magicicada cassini (Brood X), were revealed by high-resolution microcomputed tomography, magnetic resonance imaging, electron microscopy, and laser vibrometry to understand the mechanism of sound production in these insects. Each 50 Hz muscle contraction yielded five to six stages of rib buckling in the tymbal, and a small release of muscle tension resulted in a rapid recovery due to the spring-loaded nature of the stiff ribs in the resilin-rich tymbal. The tymbal muscle sarcomeres have thick and thin filaments that are 30% shorter than those in flight muscles, with Z-bands that were thicker and configured into novel perforated hexagonal lattices. Caffeine-treated fibers supercontracted by allowing thick filaments to traverse the Z-band through its open lattice. This superfast sonic muscle illustrates design features, especially the matching hexagonal symmetry of the myofilaments and the perforated Z-band that contribute to high-speed contractions, long endurance, and potentially supercontraction needed for producing enduring mating songs and choruses.

原文英語
頁(從 - 到)2017-2026
頁數10
期刊FASEB Journal
20
發行號12
DOIs
出版狀態已發佈 - 十月 2006
對外發佈

ASJC Scopus subject areas

  • 生物技術
  • 生物化學
  • 分子生物學
  • 遺傳學

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