Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-23T07:41:43.148Z Has data issue: false hasContentIssue false

6.—A Re-examination of the Central Nervous System of Alderia modesta (Lovén).

Published online by Cambridge University Press:  06 July 2012

T. Gascoigne
Affiliation:
Alleyn's School, Dulwich, London.

Synopsis

Alderia modesta (class Gastropoda, order Sacoglossa) has a central nervous system of a type common in the Stiligeridae and Limapontiidae. The visceral loop is short and bears two ganglia, the abdominal and supra-intestinal.

Medio-dorsal bodies, probably neurosecretory in function, are present on the cerebral ganglia. They were also found in eight other species of Sacoglossa and latero-dorsal bodies were noted in Oxynoe viridis (Pease) and Lobiger viridis (Pease).

Dissections of sixteen species of Sacoglossa showed that the order may be arranged on the length of the visceral loop and the number of ganglia on it. The evolution of medio-dorsal bodies is discussed.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1974

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

References to Literature

Alder, J. and Hancock, A., 18451855. A Monograph of the British Nudibranchiate Mollusca. London: Ray Society.CrossRefGoogle Scholar
Apathy, S. V., 1892. Erfahrungen in der Behandlung des Nervensystems für histologische Zweckc. 1. Mitlheilung, Methylenblau. Z. Wiss. Mikrosk., 9, 1537.Google Scholar
Boer, H. H., 1965. A cytological study of neuro-secretory cells in Basommatophora, with particular reference to Lymnaea stagnalis L. Archs Néerl. Zool., 16, 313386.CrossRefGoogle Scholar
Boettger, C. R., 1962. Gastropoden mit zwei Schalenklappen. Verh. Dt. Zool. Ges., 26, 403439.Google Scholar
Bullock, T. H. and Horridge, G. A., 1965. Structure and Function in the Nervous Systems of Invertebrates, IF, Chap. 23. San Francisco and London: Freeman.Google Scholar
Eliot, C., 1906. Notes on some British Nudibranchiata. J. Mar. Biol. Assoc. U.K., 7, 376382.CrossRefGoogle Scholar
Eliot, C., 1910. A Monograph on the British Nudibranchiate Mollusca, pt. VIII (supplementary), pl. VII, fig. 6. London: Ray Society.Google Scholar
Guiart, J., 1901. Contribution a l'étude des Gastéropodes Opisthobranches, et en particulier des Céphalaspides, Mém. Soc. Zool. Fr., 14, 88132.Google Scholar
Hoffmann, H., 1936. Opisthobranchia ord Bronns Klassen und Ordnungen des Tierreichs, 3, 2–3/5, 752769. Leipzig: Akad. Verlag.Google Scholar
Hyman, L. H., 1967. The Invertebrates, Vol. VI, Mollusca 1, p. 461. New York: McGraw-Hill.Google Scholar
Joosse, J., 1964. Dorsal bodies and neuro-sensory cells of the cerebral ganglia of Lymnaea stagnalis L. Archs Neerl. Zool., 16, 110.CrossRefGoogle Scholar
Lever, J., 1958. On the relation between the medio-dorsal bodies and the cerebral ganglia in some Pulmonates. Archs Néerl. Zool., 13, 194201.Google Scholar
Odhner, N., 1914. Ptisanula limnacoides, a new arctic opisthobranchiate mollusc, its anatomy and affinities. Ark. Zool., 8, no. 25.Google Scholar
Russell, L., 1929. The comparative morphology of the Elysioid and Aeolidoid types of the molluscan nervous system and its bearings on the relationships of the Ascoglossan nudibranchs. Proc. Zool. Soc. Loud., 14, 197230.CrossRefGoogle Scholar