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Fine structure of the axial complex of Sphaerechinus granularis (Lam.) (Echinodermata: Echinoidea)

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Summary

Three regions of the axial complex in Sphaerechinus granularis can be distinguished: 1) The axial organ which protrudes from one side of the axial sinus; the sinus septum which separates the sinus from the body cavity and encloses the stone canal; the pulsating vessel which runs along the inside of the axial organ. 2) The blindly-ending terminal sinus in which the pulsating vessel broadens out to the contractile terminal process. 3) The ampulla of the stone canal which connects the axocoel and water vascular system and which opens out through the madreporite.

A single-layered, monociliated coelomic epithelium surrounds all regions of the axial complex. This epithelium contains smooth muscle cells at the contractile areas. Canaliculi, surrounded by basal lamina, are formed through infolding of epithelia; they end blindly in the fluid and connective tissue -matrix of the inner structures.

The lacunae of the dorso-ventral mesentery connect the periesophageal and the perianal haemal ring with the axial organ. The axial organ contains many coelomocytes rich in pigment and granules. These coelomocytes are separated into compartments by elastic fibres. Phagocytosis of whole cells and transformational stages of coelomocytes suggest storage and degradation functions. An excretory function via the water vascular system is also suggested.

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References

  • Bargmann, W., Behrens, B.: Über die Tiedemannschen Organe des Seesternes (Asterias rubens L.). Z. Zellforsch. 63, 120–133 (1964)

    Google Scholar 

  • Bargmann, W., Hehn, G. v.: Über das Axialorgan (“mysterious gland”) von Asterias rubens L. Z. Zellforsch. 88, 262–277 (1968)

    Google Scholar 

  • Binyon, J.: Physiology of Echinoderms. Int. Ser. Monogr. in Pure and Applied Biology, Vol. 49. Oxford: Pergamon Press 1972

    Google Scholar 

  • Boolootian, R.A., Campbell, J.L.: A primitive heart in the Echinoid Stronglyocentrotus purpuratus. Science 145, 173–175 (1964)

    Google Scholar 

  • Burton, M.P.M.: Haemal system of regular Echinoids. Nature (Lond.) 204, 1218 (1964)

    Google Scholar 

  • Chien, P.K., Johnson, P.T., Holland, N.D., Faylla, A.L., Chapman, F.A.: The coelomic elements of sea urchins (Stronglyocentrotus). IV. Ultrastructure of the coelomocytes. Protoplasma (Wien) 71, 419–442 (1970)

    Google Scholar 

  • Cobb, J.L.S., Sneddon, E.: An ultrastructural study of the gills of Echinus esculentus. Cell Tiss. Res. 182, 265–274 (1977)

    Google Scholar 

  • Coleman, R.: Ultrastructure of the tube foot wall of a regular Echinoid, Diadema antillarum Philippi. Z. Zellforsch. 96, 162–172 (1969)

    Google Scholar 

  • Cuénot, L.: Anatomie, éthologie et systématique des Echinodermes. In: Traité de Zoologie, Vol. XI, (P. Grassé, ed.), p. 154. Paris: Masson 1948

    Google Scholar 

  • Endean, R.: The coelomocytes and coelomic fluids. In: Physiology of Echinodermata (Ed. R.A. Boolootian). New York: Interscience Publ. 1966

    Google Scholar 

  • Fechter, H.: Über die Funktion der Madreporenplatte der Echinoidea. Z. vergl. Physiol. 51, 227–257 (1965)

    Google Scholar 

  • Florey, E., Cahill, M.A.: Ultrastructure of sea urchin tube feet. Cell Tiss. Res. 188, 195–214 (1977)

    Google Scholar 

  • Fontaine, A.R., Lambert, P.: The fine structure of the leucocytes of the holothurian, Cucumaria miniata. Canad. J. Zool. 55, 1530–1544 (1977)

    Google Scholar 

  • Gilula, N.B., Branton, D., Satir, P.: The septate junction: a structural basis for intercellular coupling. Proc. nat. Acad. Sci. (Wash.) 67, 213–220 (1970)

    Google Scholar 

  • Hamann, O.: Anatomie und Histologie der Echiniden and Spatangen. Jena. Z. Med. Naturw. 21, 150–162 (1887)

    Google Scholar 

  • Höbaus, E.: Studies on phagocytes of regular sea urchins (Echinoidea, Echinodermata). I. The occurrence of iron containing bodies within the nuclei of phagocytes. Zool. Anz. 200, 31–40 (1978)

    Google Scholar 

  • Hoffmann, C.K.: Zur Anatomie der Echinen und Spatangen. Niederl. Arch. Zool. I, 11–112 (1871)

    Google Scholar 

  • Holland, N.D.: The fine structure of the axial organ of the feather star, Nemaster rubiginosa (Echinodermata: Crinoidea). Tissue & Cell 2, 625–636 (1970)

    Google Scholar 

  • Hyman, L.H.: The invertebrates, Vol. IV, Echinodermata. New York: McGraw-Hill B.C. 1955

    Google Scholar 

  • Jangoux, M., Schaltin, P.: Le complexe axial de Psammechinus miliaris (Gmelin) (Echinodermata, Echinoidea). Arch. Zool. exp. gén. 118, 285–303 (1977)

    Google Scholar 

  • Karnovsky, M.J.: A formaldehyde-glutaraldehyde fixative of high osmolarity for use in electron microscopy. J. Cell Biol. 27, 137A-138A (1965)

    Google Scholar 

  • Kawaguti, S.: Electron microscopic structure of the podial wall of echinoid with special references to the nerve plexus and the muscle. Biol. J. Okayama Univ. 10, 1–12 (1964)

    Google Scholar 

  • Koehler, R.: Recherches sur les Echinides des côtes de Provence. Ann. Mus. Hist. nat. Marseille 1, (Mem. 3) 1–167 (1883)

    Google Scholar 

  • Leclerc, M.: L'organe axial et ses relationes avec la sexualité et l'immunité chez les Asterides. Ann. Sci. Nat. Zool. 12. sér., 16, 285–359 (1974)

    Google Scholar 

  • Leipoldt, F.: Das angebliche Exkretionsorgan der Seeigel, untersucht an Sphaerechinus granularis und Dorocidaris papillata. Z. wiss. Zool. 55, 585–625 (1893)

    Google Scholar 

  • Luft, J.H.: Improvements in epoxy resin embedding methods. J. biophys. biochem. Cytol. 9, 409–414 (1961)

    Google Scholar 

  • Millott, N.: A possible function for the axial organ of echinoids. Nature (Lond.) 209, 594–596 (1966)

    Google Scholar 

  • Millott, N.: The axial organ of echinoids. Re-interpretation of its structure and function. Symp. zool. Soc. Lond. 20, 53–63 (1967)

    Google Scholar 

  • Millott, N.: Injury and the axial organ of echinoids. Experientia (Basel) 25, 756–757 (1969)

    Google Scholar 

  • Millott, N., Farmanfarmaian, A.: Regeneration of the axial organ of Arbacia punctulata and its implications. Nature (Lond.) 216, 1136–1138 (1967)

    Google Scholar 

  • Millott, N., Vevers, H.G.: Axial organ and fluid circulation in echinoids. Nature (Lond.) 204, 1216–1217 (1964)

    Google Scholar 

  • Nørrevang, A., Wingstrand, K.G.: On the occurrence and structure of choanocyte-like cells in some echinoderms. Acta zool. (Stockh.) 51, 249–270 (1970)

    Google Scholar 

  • Pequignat, E.: “Skin digestion” and epidermal absorption in irregular and regular urchins and their probable relation to the outflow of spherule-coelomocytes. Nature (Lond.) 210, 397–399 (1966)

    Google Scholar 

  • Perrier, E.: Sur le corps plastidogêne ou prétendu coeur des Echinodermes. C.R. Acad. Sci. (Paris) 104, 180–182 (1887)

    Google Scholar 

  • Pietschmann, W.: Zur Kenntnis des Axialorgans und der ventralen Bluträume der Asteriden. Arb. Zool. Inst. Wien 16, 63–86 (1906)

    Google Scholar 

  • Prouho, H.: Recherches sur le Dorocidaris papillata. Arch. Zool. exp. gén., 2. sér. 5, 213–380 (1887)

    Google Scholar 

  • Reynolds, E.S.: The use of lead citrate at high pH as an electron opaque stain in electron microscopy. J. Cell Biol. 17, 208–212 (1963)

    Google Scholar 

  • Rieder, E.: Untersuchungen über das Axialorgan der Echinoidea. Phil. Diss. Univ. Vienna, Zool. Inst. 1975

  • Schinke, H.: Bildung und Ersatz der Zellelemente der Leibeshöhlenflüsigkeit von Psammechinus miliaris (Echinoidea). Z. Zellforsch. 35, 311–331 (1950)

    Google Scholar 

  • Stang-Voss, Ch.: Zur Ultrastruktur der Blutzellen wirbelloser Tiere. VI. Über die Haemocyten von Psammechinus miliaris (Echinoidea). Z. Zellforsch. 122, 76–84 (1971)

    Google Scholar 

  • Strenger, A.: Sphaerechinus granularis. Violetter Seeigel. Großes Zool. Praktikum, Bd. 18e. Stuttgart: G. Fischer 1973

    Google Scholar 

  • Teuscher, R.: Beiträge zur Anatomie der Echinodermen. III.Asteriadae. Jena. Z. Med. Naturw. 10, 493–528 (1876)

    Google Scholar 

  • Tiedemann, F.: Anatomie der Röhrenholothurie, des pomeranzfarbigen Seesternes und des Stein Seeigels. Landshut: J. Thomannsche Buchdruckerei 1816

  • Verchowskaja, I.: Experimentalstudien über das Axialorgan von Echinoidea. Z. vergl. Physiol. 14, 405–414 (1931)

    Google Scholar 

  • Vevers, H.G.: The histochemistry of the echinoid axial organ. Symp. Zool. Soc. Lond. 20, 65–74 (1967)

    Google Scholar 

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Authors and Affiliations

  1. Department of Zoology, University of Salzburg, Austria

    Sebastian Bachmann &  Alfred Goldschmid

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  1. Sebastian Bachmann
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  2. Alfred Goldschmid
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Bachmann, S., Goldschmid, A. Fine structure of the axial complex of Sphaerechinus granularis (Lam.) (Echinodermata: Echinoidea). Cell Tissue Res. 193, 107–123 (1978). https://doi.org/10.1007/BF00221605

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