Summary
A microcanalicular network is demonstrated within the ossicle stroma and the dermal tissue of two asteroid species. Microcanaliculi are presumed to be mesodermal structures. They consist of convoluted tubular ducts lined by epithelial cells associated with scattered basiepithelial nervous processes. Such a microcanalicular system has not been reported previously from any echinoderm species. Its discovery in asteroids entails some conceptual changes, especially considering the physiology of the body wall.
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Cuénot L (1948) Anatomie, systématique et éthologie des échinodermes. In: Grasse PP (ed), Traité de Zoologie, vol 11. Masson, Paris, pp 3–363
Dietrich HF, Fontaine AR (1975) A decalcification method for ultrastructure of echinoderm tissues. Stain Technol 50:351–354
Grimmer JC, Holland ND, Messing CG (1984) Fine structure of the stalk of the bourgueticrinid sea lily Democrinus conifer (Echinoderma: Crinoidea). Mar Biol 81:163–176
Heatfield BM, Travis DF (1975a) Ultrastructural studies of regenerating spines of the sea urchin, Strongylocentrotus purpuratus. I. Cell types without spherules. J Morphol 145:13–50
Heatfield BM, Travis DF (1975b) Ultrastructural studies of regen erating spines of the sea urchin, Strongylocentrotus purpuratus. II. Cell types with spherules. J Morphol 145:51–72
Humphrey CD, Pittman FE (1974) A simple methylene blue — azure II — basic fuschin stain for epoxy-embedded tissue sections. Stain Technol 49:9–14
Humphreys WJ, Spurlock BO, Johnson JS (1974) Critical point drying of ethanol infiltrated, cryofractured biological specimens for scanning electron microscopy. In: Johari O, Corvin I (eds) Scanning electron microscopy (IITRI Proc.) 7(1): 275–282
Jangoux M (1982) Digestive systems: General considerations. In: Jangoux M, Lawrence JM (eds) Echinoderm nutriton. Balkema, Rotterdam, pp 185–186
Märkel K, Röser U (1983) The spine tissue of the echinoid Eucidaris tribuloides. Zoomorphology 103:25–41
Nichols D (1962) Echinoderms. Hutchinson, London, p 200
Nørrevang A, Wingstrand KG (1970) On the occurence and structure of choanocyte-like cells in some echinoderms. Acta Zool 51:249–270
Walker C (1979) Ultrastructure of the somatic portion of the gonads in asteroids, with emphasis on flagellated-collar cells and nutrient transport. J Morphol 162:127–162
Wood RL, Cavey MJ (1981) Ultrastructure of the coelomic lining in the podium of the starfish Stylasterias forreri. Cell Tissue Res 218:449–473
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Research assistants of the National Fund for Scientific Research (NFSR, Belgium)
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Jangoux, M., Dubois, P., Lambert, A. et al. Occurrence of a microcanalicular system within the ossicles and dermal tissue of Asterias rubens and Marthasterias glacialis (Echinodermata: Asteroidea). Cell Tissue Res. 242, 657–660 (1985). https://doi.org/10.1007/BF00225434
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DOI: https://doi.org/10.1007/BF00225434