Recherches histologiques sur la tunique de deux ascidiaces phlebobranches: Ascidiella aspersa Muell. et Phallusia mammillata Cuv.
Stiévenart, J. (1970). Recherches histologiques sur la tunique de deux ascidiaces phlebobranches: Ascidiella aspersa Muell. et Phallusia mammillata Cuv. Ann. Soc. R. Zool. Bel. 100(3): 139-157
In: Annales de la Société Royale Zoologique de Belgique = Annalen van de Koninklijke Belgische Vereniging voor Dierkunde. Société Royale Zoologique de Belgique: Bruxelles. ISSN 0771-5528, more
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| Keywords |
Ascidiella aspersa (Müller, 1776) [WoRMS]; Phallusia mammillata (Cuvier, 1815) [WoRMS]
Marine/Coastal |
| Abstract |
The structure and composition of the tunics of 2 phlebobranch ascidians, Ascidiella aspersa and Phallusia mammillata have been investigated by means of histochemical and extraction techniques. As well as a high percentage of water, acidic polysaccharides, neutral polysaccharides and proteins have been detected. The distribution and proportions of these 3 constituents differ from one sp to another. No chitin was detectable. The neutral polysaccharide representing the so-called tunicin, amounted to less than 40 percent of the crude dry weight. It is concluded that the tunic of phlebobranch tunicates has no uniformity of structure and composition as is generally accepted. |
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