An ultrastructural approach to feeding behaviour in Philodina roseola and Brachionus calyciflorus (rotifers) II. The oesophagus |
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| Authors: | P Clement J Amsellem A-M Cornillac A Luciani C Ricci |
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| Institution: | (1) Laboratoire d'Histologie et Biologie Tissulaire (LA 244 CNRS) et CMEABG, Université Claude Bernard (Lyon I), Villeurbanne, France;(2) Instituto di Zoologia, Universita degli studi, via Celosia, 10, Milano, Italy |
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| Abstract: | The cuticular oesophagus is a simple expansion of the dorsal pharyngeal wall of the mastax. The ciliary oesophagus is the cellular anterior wall of the stomach lumen, but seems to have the same embryological origin as the pharynx.In Brachionus calyciflorus, its cilia are surrounded by cuticular velums which have the same myelin-like structure and the same function as the buccal velum of Philodina roseola. In all cases, the oesophagus prevents the return of food particles from the stomach to the mastax lumen. |
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| Keywords: | Rotifer ultrastructures feeding behaviour digestive tract cuticle |
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