Occurrence of a microcanalicular system within the ossicles and dermal tissue of Asterias rubens and Marthasterias glacialis (Echinodermata: Asteroidea) |
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Authors: | Dr. Michel Jangoux Philippe Dubois Anne Lambert Catherine Yourassowsky |
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Affiliation: | (1) Laboratoire de Biologie Marine, Université Libre de Bruxelles, Belgium;(2) Laboratoire de Biologie Marine (CP 160), Université Libre de Bruxelles, 50 Ave F.D. Roosevelt, 1050 Bruxelles, Belgium |
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Abstract: | 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.Research assistants of the National Fund for Scientific Research (NFSR, Belgium) |
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Keywords: | Ossicle Dermis Epithelium Mesoderm Echinodermata |
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