Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-09T13:32:42.606Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies in the Functional Morphology and Embryology of Onchidella Celtica (Forbes and Hanley) and their Bearing on its Relationships

Published online by Cambridge University Press:  11 May 2009

Vera Fretter
Vera Fretter
Affiliation:
Departments of Zoology, Birkbeck and Royal Holloway Colleges, University of London
Get access Rights & Permissions [Opens in a new window]

Extract

Onchidella celtica lives in communities in intertidal rock crevices, emerging only when uncovered by the tide during the milder months (March- November). It feeds on young algae and diatoms, rasping them from the rock with the radula which is lubricated by a mucous saliva. The distensible crop and stomach afford ample storage space for the food. The stomach consists of three chambers (Fig. 2), and the dorsal (d) and ventral (v) chitinous plates of the posterior one, the gizzard, crush the contents and help to direct the soluble portion towards the ducts of the digestive gland. There are three of these the two anterior (Id, rd) are large and lead from the initial chamber of the stomach (ic), the third (pd) is small and joins the posterior wall of the gizzard (pzv). The digestive gland secretes into the stomach; no cellulase occurs. Feeding experiments suggest that the digestive cells of the gland absorb only fluid. Lime and excretory cells occur in the crypts of the digestive epithelium, the latter concerned with taking up excretory matter from the blood and elaborating it into spherical masses for evacuation with the faeces

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 25 , Issue 4 , September 1943 , pp. 685 - 720
Copyright
Copyright © Marine Biological Association of the United Kingdom 1943

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Arey, L. B. & Crozier, W. J., 1921. On the natural history of Onchidium. Journ. Exp. Zool., Vol. XXXII pp. 443–502.CrossRefGoogle Scholar
Bergh, R. 1885. Ueber die Verwandtschaftsbeziehungen der Onchidien. Morph.Jb., Bd. X, pp. 172–81.Google Scholar
Brock, J., 1883. Besprechung der Arbeit von Joyeux-Laffuie. Biol. Zbl., Bd.III, PP. 370–4.Google Scholar
Cuvier, G., 1804. Mémoire sur l'Onchidie, genre de mollusques nus, voisin des Limaces, et sur une espèce nouvelle, Onchidium Peronii. Paris, Ann. Mus. Hist. nat., T. V, pp. 99–122.Google Scholar
Ellis, A. E., 1926. British Snails. Oxford, Clarendon Press.Google Scholar
Fischer, H., 1892. Recherches sur la morphologie du foie des Gastéropodes. Bull. sci. Fr. Belg., T. XXIV (ser. 4, T. iii), pp. 260–346.Google Scholar
Forbes, E. & Hanley, S., 1853. A History of British Mollusca and their Shells. London.Google Scholar
Fretter, V., 1937. The structure and function of the alimentary canal of some species of Polyplacophora (Mollusca). Trans. Roy. Soc. Edinb., Vol. LIX, pp. 119–64.CrossRefGoogle Scholar
Fretter, v., 1939. The structure and function of the alimentary canal of some tectibranch molluscs, with a note on excretion. Trans. Roy. Soc. Edinb., Vol. LIX, pp. 599–646.CrossRefGoogle Scholar
Fretter, v., 1941. The genital ducts of some British stenoglossan prosobranchs. Journ. Mar. Biol. Assoc. U.K., Vol. XXV, pp. 173–211.CrossRefGoogle Scholar
Graham, A., 1932. On the structure and function of the alimentary canal of the limpet. Trans. Roy. Soc. Edinb., Vol. LVII, pp. 287–308.CrossRefGoogle Scholar
Haller, B., 1894. Betrachtungen U¨ber die Nieren von Onchidium celticum Cuv. Verh. naturh.-med. Ver. Heidelberg, N.F. Bd. V, pp. 1–10.Google Scholar
Heidermanns, C., 1924. u¨ber den Muskelmagen der Siisswasserlungenschnecken. Zool. Jb. Abt. 3 Allg. Zool., Bd. XLI, pp. 335–424.Google Scholar
Hirasaka, K., 1922. On the structure of the dorsal eyes ofOnchidium with notes on their formation.Annot. zool. jap., Vol. X, pp. 171–81.Google Scholar
Hoffmann, H., 1929. Zur Kenntnis der Oncidiiden (Gastrop. Pulmonés). Teil 11. Phylogenie und Verbreitung. Zool. Jb. Abt. 1 Syst., Bd. LVII, pp. 253–302.Google Scholar
Howells, H. H., 1942. The structure and function of the alimentary canal of Aplysia punctata. Quart. Journ. Micr. Sci., Vol. LXXXM, pp. 357–97.Google Scholar
Jhering, H. Von, 1877. Ueber die systematische Stellung von Peronia, und die Ordnung der Nephropneusta. Erlangen, Sitzber. Phys. Med. Soc., Bd. 9, pp. 131–68.Google Scholar
Joyeux-Laffuie, J., 1882. Organisation et développement de l'OncidieOncidium celticum Cuv.Arch. Zool.exp. gén., Vol. X, pp.225–383.Google Scholar
Labbé, A., 1934. Opisthobranches et Silicodermes (Oncidiades).Rés. sci. Voy. Indes orientales néerl. Prince Léopold Belg., Vol. 11, fasc. 14 (i), pp. 1–83.Google Scholar
Linke, O., 1933. Morphologie und Physiologie des Genitalapparates des Nordseelittorinen.Wiss. Meeresuntersuch., Vol. XIX, no. 5, 60pp.Google Scholar
Mazzzarelli, G., 1906. Contributo alla conoscenza delle larve libere degli opisthobranchi. Arch. Zool. ital. Napoli, Vol. II, pp. 19–78.Google Scholar
Plate, L., 1893. Studien über opisthopneumone Lungenschnecken. II. Die Oncidiiden. Zool Jb. Abt. 2 Anat., Bd. VII, pp. 93–234.Google Scholar
Semper, C., 1876–1877. Einige Bemerkungen über die “Nephropneusten” von v. Jherings. Arb. Zool. Zool. Inst. Wirzburg, Bd. III.Google Scholar
K. Von, Wissel, 1898. Beiträge zur Anatomic der Gattung Oncidiella. Zool. Jb., suppl. Bd. IV (Fauna Chilensis, Bd. I), pp. 583–640.Google Scholar