Summary
The differentiation and course of the first order giant nerve fibres in the medial and posterior suboesophageal lobes of the brain of Sepia officinalis is examined in different developmental stages. In earlier embryonic stages one pair of first order giant cells differentiates on each side. Later, as a normal phenomenon, one cell of each pair degenerates.
The two remaining giant fibres cross in the palliovisceral lobe. On either side of the intersection one branch of the contralateral and one branch of the ipsilateral axon are connected with the second order giant fibres. This structure, which differs from that found in Loligo, apparently mediates the functional bilaterality of the giant fibre system.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literatur
Arnold, J. M.: Normal embryonic stages of the squid, Loligo pealii (Lesueur). Biol. Bull. 128, 24–32 (1965).
Bodian, D.: The staining of paraffin sections of nervous tissues with activated protargol. The role of fixatives. Anat. Rec. 69, 153–162 (1937).
Boycott, B. B.: The functional organization of the brain of the cuttlefish Sepia officinalis. Proc. roy. Soc. B 153, 503–534 (1961).
—: A comparison of living Sepioteuthis sepioidea and DoryteutJiis plei with other squids, and with Sepia officinalis. J. Zool. 147, 344–351 (1965).
Fioroni, P.: Zum embryonalen Größenwachstum bei Tintenfischen. Rev. suisse Zool. 71, 777–804 (1964).
Glücksmann, A.: Cell death in normal development. Arch. Biol. (Liège) 76, 419–437 (1965).
Hughes, A.: Cell degeneration in the larval ventral horn of Xenopus laevis. J. Embryol. exp. Morph. 9, 269–284 (1961).
Levi-Montalcini: Events in the developing nervous system. Progr. Brain Res. 4, 1–26 (1964).
Lund, R. D.: The staining of degeneration in the nervous system of the octopus by modified silver methods. Quart. J. micr. Sci. 106, 115–117 (1965).
Martin, R.: On the structure and embryonic development of the giant fibre system of the squid Loligo vulgaris. Z. Zellforsch. 67, 77–85 (1965).
Naef, A.: Die Cephalopoden, Bd. 2, Teil I. Embryologie. Fauna und Flora des Golfes von Neapel. 35. Monographie, 1–357 (1928).
Sereni, E., and J. Z. Young: Nervous degeneration and regeneration in cephalopods. Pubbl. Staz. zool. Napoli 12, 173–208 (1932).
Thore, S.: Beiträge zur Kenntnis der vergleichenden Anatomie des zentralen Nervensystem der dibranchiaten Cephalopoden. Pubbl. Staz. zool. Napoli 17, 313–506 (1939).
Young, J. Z.: Fused neurons and synaptic contacts in the giant nerve fibres of cephalopods. Phil. Trans. B 229, 465–505 (1939).
Author information
Authors and Affiliations
Additional information
Supported by grant NONR 2100 through the Anton and Reinhard Dohrn foundation.
Rights and permissions
About this article
Cite this article
Martin, R., Rungger, D. Zur Struktur und Entwicklung des Riesenfasersystems erster Ordnung von Sepia officinalis L. (Cephalopoda). Z.Zellforsch 74, 454–463 (1966). https://doi.org/10.1007/BF00496838
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00496838