Advertisement

Cell and Tissue Research

, Volume 236, Issue 2, pp 339–343 | Cite as

The ecdysis of hair mechanoreceptors in crayfish

  • Nobuo Kouyama
  • Tateo Shimozawa
Article

Summary

The fine structure of hair mechanoreceptors in crayfish during moulting was investigated with special attention to the interface apparatus between cuticular hairs and sensory cells: the chorda. The chordae are lost with old exuviae at every moulting. They are drawn out from a moulting canal at the tip of the new hair. The chordae are regenerated from a material secreted by sheath cells after moulting. Therefore, the chorda is an inward projection of the cuticular exoskeleton, and it has direct contact with the sensory element, the scolopidium. The scolopidium has been found in both hair mechanoreceptors and subcuticular chordotonal organs in crustaceans, and is thought to be a primitive type of mechano-sensory transducing element. The present observation gives additional evidence for the homology of two sensory elements in arthropods, i.e., the cuticular hair sensilla and subcuticular chordotonal organs.

Key words

Moulting Mechanosensory hair Chordotonal organ Ultrastructure Crustacea 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Gaffal KP, Hansen K (1972) Mechanorezeptive Strukturen der antennalen Haarsensillen der Baumwollwanze Dysdercus intermedius Dist. Z Zellforsch 132:79–94Google Scholar
  2. Gaffal KP, Tichy H, Theiss J, Seelinger G (1975) Structural polarities in mechanosensitive sensilla and their influence on stimulus transmission (Arthropoda). Zoomorphologie 82:79–103Google Scholar
  3. Gnatzy W, Schmidt K (1972) Die Feinstruktur der Sinneshaare auf den Cerci von Gryllus bimaculatus Deg. (Saltatoria, Gryllidae) IV. Die Häutung der kurzen Borstenhaare. Z Zellforsch 126:223–239Google Scholar
  4. Guse G-W (1980a) Fine structure of sensilla during moulting in Neomysis integer (Leach) Crustacea, Mysidacea. Experientia 36:1382–1384Google Scholar
  5. Guse G-W (1980b) Development of antennal sensilla during moulting in Neomysis integer (Leach) (Crustacea, Mysidacea). Protoplasma 105:53–67Google Scholar
  6. Howse PE (1968) The fine structure and functional organization of chordotonal organs. Symp Zool Soc Lond 23:167–198Google Scholar
  7. Kouyama N, Shimozawa T (1982) The structure of a hair mechanoreceptor in the antennule of crayfish (Crustacea). Cell Tissue Res 226:565–578Google Scholar
  8. Kouyama N, Shimozawa T, Hisada M (1981) Transducing element of crustacean mechano-sensory hairs. Experientia 37:379–380Google Scholar
  9. Lowe DA, Mill PJ, Knapp MF (1973) The fine structure of the PD proprioceptor of Cancer pagurus. II. The position sensitive cells. Proc R Soc Lond B 184:199–205Google Scholar
  10. McIver SB (1975) Structure of cuticular mechanoreceptors of arthropods. Ann Rev Ent 20:381–397Google Scholar
  11. Mill PJ, Lowe DA (1973) The fine structure of the PD proprioceptor of Cancer pagurus. I. The receptor strand and the movement sensitive cells. Proc R Soc Lond B 184:179–197Google Scholar
  12. Moran DT (1971) Loss of sensory process of an insect receptor at ecdysis. Nature 234:476–477Google Scholar
  13. Moran DT, Rowley JC III, Zill SN, Varela FG (1976) The mechanism of sensory transduction in a mechanoreceptor. Functional stages in campaniform sensilla during the moulting cycle. J Cell Biol 71:832–847Google Scholar
  14. Schmidt K, Gnatzy W (1971) Die Feinstruktur der Sinneshaare auf den Cerci von Gryllus bimaculatus Deg. (Saltatoria, Gryllidae) II. Die Häutung der Fadenund Keulenhaare. Z Zellforsch 122:210–226Google Scholar
  15. Thurm U (1964) Mechanoreceptors in the cuticle of the honey bee: Fine structure and stimulus mechanism. Science 145:1063–1065Google Scholar
  16. Thurm U (1965) An insect mechanoreceptor. Part I: Fine structure and adequate stimulus. Cold Spr Harb Symp quant Biol 30:75–82Google Scholar
  17. Whitear M (1962) The fine structure of crustacean proprioceptors. I. The chordotonal organs in the legs of the shore crab (Carcinus maenas). Phil Trans R Soc Lond B 245:291–325Google Scholar
  18. Yokohari F (1978) Hygroceptor mechanism in the antenna of the cockroach Periplaneta. J Comp Physiol 124:53–60Google Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Nobuo Kouyama
    • 1
  • Tateo Shimozawa
    • 1
  1. 1.Zoological Institute, Faculty of Science, Hokkaido UniversitySapporoJapan

Personalised recommendations