Journal of comparative physiology

, Volume 100, Issue 1, pp 25–57 | Cite as

Physical and physiological properties of the tettigoniid (“grasshopper”) ear

  • Harald Nocke
Article

Summary

  1. 1.

    The hearing threshold for test sound frequencies above 2 kHz and the directional properties of the intact tettigoniid ear (8 kHz test sound) remain unchanged if sound is prevented from acting on theouter surface of the tympana (Figs. 6, 14). This cannot readily be understood from present theories on tettigoniid hearing.

     
  2. 2.

    No changes of the hearing threshold above 0.5 kHz or the directionality at 8 kHz can be observed if onlyone tympanum, anterior or posterior, is damped. The hearing threshold shows an increase only afterboth tympana have been damped (Figs. 7, 17).

     
  3. 3.

    The ear becomes very insensitive to sound and looses the directional properties (8 kHz test sound), characteristic of the intact ear, if the tympanal trachea is blocked at the spiracle on the thorax (Figs. 5, 16). This demonstrates the importance of the sound pathway via the tympanal trachea.

     
  4. 4.

    The directional sensitivity, i.e. the hearing threshold for a given sound frequency, depends on the relative position between the direction of sound incidence and the tympanal spiracle on the thorax (Figs. 12, 13). The symmetry axis of the directivity pattern (8 kHz test sound) is fixed in relation to the longitudinal axis of the body and does not change if the foreleg is moved into different “walking positions” (Fig. 15).

     
  5. 5.

    The optimum frequency of hearing of the tettigoniid ear is changed by altering the length of the tympanal trachea (Figs. 9, 19).

     
  6. 6.

    Two theories, namely the horn and the resonator theory, relating to the acoustical function of the tympanal trachea are discussed.

     

Keywords

Relative Position Symmetry Axis Longitudinal Axis Physiological Property Present Theory 

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References

  1. Ander, K.: Vergleichend-anatomische und Phylogenetische Studien über die Ensifera (Saltatoria). Opusc. Ent. Lund (1939)Google Scholar
  2. Autrum, H.: Über Lautäußerungen und Schallwahrnehmungen bei Arthropoden II. Z. vergl. Physiol.28, 326–352 (1940)Google Scholar
  3. Autrum, H.: Über Gehör und Erschütterungssinn bei Locustiden. Z. vergl. Physiol.28, 580–637 (1941)Google Scholar
  4. Baier, L. J.: Contribution to the physiology of the stridulation and hearing of insects. Zool. Jb. Physiol.47, 151–248 (1930)Google Scholar
  5. Beranek, L.: Acoustics. New York: McGraw-Hill Book Company 1954Google Scholar
  6. Busnel, M. C.: Contribution à l'étude des émissions acoustiques des Orthoptères. Ann. I.N.R.A.3, 333–421 (1953)Google Scholar
  7. Dumortier, B.: The physical characteristics of sound emissions in Arthropoda. In: Acoustic behaviour of animals (ed. R. G. Busnel). Amsterdam: Elsevier Publ. Co. 1963Google Scholar
  8. Gardner, M. B., Hawley, M. S.: Network representation of the external ear. J. acoust. Soc. Amer.52, 1620–1628 (1972)Google Scholar
  9. Graber, V.: Die tympanalen Sinnesapparate der Orthopteren. Denkschr. kgl. Akad. Wiss. Wien math.-nat.36 (1876)Google Scholar
  10. Katsuki, Y., Suga, N.: Electrophysiological studies on hearing in common insects in Japan. Proc. Jap. Acad.34, 633–638 (1958)Google Scholar
  11. Katsuki, Y., Suga, N.: Neural mechanism of hearing in insects. J. exp. Biol.37, 279–290 (1960)Google Scholar
  12. Lewis, D. B.: The physiology of the tettigoniid ear. I. The implications of the anatomy of the ear to its function in sound reception. II. The response characteristic of the ear to differential inputs: Lesion and blocking experiments. III. The response characteristic of the intact ear and some biophysical considerations. IV. A new hypothesis for acoustic orientation behaviour. J. exp. Biol.60, 821–869 (1974)Google Scholar
  13. Littler, T. S.: The physics of the ear. New York: Pergamon Press 1965Google Scholar
  14. McKay, J. M.: The auditory system ofHomorocoryphus (Tettigonioidea, Orthoptera). J. exp. Biol.51, 787–802 (1969)Google Scholar
  15. Michelsen, A.: Pitch discrimination in the locust ear: observations on single sense cells. J. Insect Physiol.12, 1119–1131 (1966)Google Scholar
  16. Michelsen, A.: The physiology of the locust ear. I. Frequency sensitivity of single cells in the isolated ear. II. Frequency discrimination based upon resonances in the tympanum. III. Acoustical properties of the intact ear. Z. vergl. Physiol.71, 49–128 (1971)Google Scholar
  17. Møller, A. R.: Network model of the middle ear. J. Acoust. Soc. Amer.33, 168–176 (1961)Google Scholar
  18. Morse, P. M.: Vibration and sound. New York: McGraw Hill 1948Google Scholar
  19. Morton, J. Y., Jones, R. A.: The acoustical impedance presented by some human ears to hearing-aid earphones of the insert type. Acustica6, 339–345 (1956)Google Scholar
  20. Murphey, R. K., Zaretsky, M. D.: Orientation to calling song by female crickets,Scapsipedus marginatus (Gryllidae). J. exp. Biol.56, 335–352 (1972)Google Scholar
  21. Nocke, H.: Physiological aspects of sound communication in crickets (Gryllus campestris L.). J. comp. Physiol.80, 141–162 (1972)Google Scholar
  22. Nocke, H.: The tympanal trachea as an integral part of the ear inAcripeza reticulata Guérin (Orthoptera, Tettigonioidea). Z. Naturforsch.29c, 652–654 (1974)Google Scholar
  23. Pumphrey, R. J.: Hearing in insects. Biol. Rev.15, 107–132 (1940)Google Scholar
  24. Quincke, G.: Ann. d. Physik128, 177 (1866)Google Scholar
  25. Regen, J.: Über die Anlockung des Weibchens vonGryllus campestris L. durch telephonisch übertragene Stridulationslaute des Männchens. Pflügers Arch. ges. Physiol.155, 193–200 (1913)Google Scholar
  26. Rheinlaender, J., Kalmring, K.: Die afferente Hörbahn im Bereich des Zentralnervensystems vonDecticus verrucivorus (Tettigoniidae). J. comp. Physiol.85, 361–410 (1973)Google Scholar
  27. Schumacher, R.: Morphologische Untersuchungen der tibialen Tympanalorgane von neun einheimischen Laubheuschrecken-Arten (Orthoptera, Tettigonioidea). Z. Morph. Tiere75, 267–282 (1973)Google Scholar
  28. Schumacher, R.: Beitrag zur Kenntnis des tibialen Tympanalorgans vonTettigonia viridissima L. (Orthoptera: Tettigoniidae). Mikroskopie29, 8–19 (1973)Google Scholar
  29. Siebold, Th.: Über das Stimm- und Gehörorgan der Orthopteren. Wiegmanns Arch. Naturgesch.10, 52–81 (1844)Google Scholar
  30. Stewart, G. W., Lindsay, R. B.: Acoustics. New York: D. van Nostrand Comp. 1930Google Scholar
  31. Suga, N.: Ultrasonic production and its reception in some neotropical Tettigoniidae. J. Insect Physiol.12, 1039–1050 (1966)Google Scholar
  32. Zaretsky, M. D.: Specificity of the calling song and short term changes in the phonotactic response by female cricketsScapsipedus marginatus (Gryllidae). J. comp. Physiol.79, 153–172 (1972)Google Scholar
  33. Zeuner, F.: The prothoracic tracheal apparatus of Saltatoria (Orthoptera). Proc. R. Ent. Soc. Lond. (A)11, 11–21 (1936)Google Scholar
  34. Zhantiev, R. D.: Frequency characteristics of tympanal organs in grasshoppers (Orthoptera, Tettigonioidea). [In russian.] Zool. J.U.S.S.R. Acad. Sci.50, 507–514 (1970)Google Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • Harald Nocke
    • 1
  1. 1.Department of Neurobiology, Research School of Biological SciencesAustralian National UniversityCanberra CityAustralia

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