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Cell and Tissue Research

, Volume 266, Issue 2, pp 285–293 | Cite as

The valvula cerebelli of the spiny eel, Macrognathus aculeatus, receives primary lateral-line afferents from the rostrum of the upper jaw

  • Mario F. Wullimann
  • Michael H. Hofmann
  • Dietrich L. Meyer
Article

Summary

In the spiny eel, Macrognathus aculeatus, anterodorsal and (to a lesser degree) anteroventral lateralline nerves project massively to the granular layer of the valvula cerebelli, throughout its rostrocaudal extent. The posterior lateral-line nerve terminates in the corpus cerebelli. Thus, valvula and corpus cerebelli are supplied with mechanosensory input of different peripheral origins. An analysis of the taxonomic distribution of experimentally determined primary lateral-line input to the three parts of the teleostean cerebellum reveals that the eminentia granularis always receives such input, and that the corpus cerebelli is the recipient of primary lateral-line input in many teleosts. The valvula, however, receives primary lateral-line afferents in only two examined species. In M. aculeatus, the massive lateral-line input to the valvula probably originates in mechanoreceptors located in the elongated rostrum of the upper jaw, a characteristic feature of mastacembeloid fishes. This projection to the valvula may therefore represent a unique specialization that arose with the evolution of the peculiar rostrum.

Key words

Cerebellum Valvula Lateral-line system Mechanoreception Macrognathus aculeatus (Teleostei) 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Mario F. Wullimann
    • 1
  • Michael H. Hofmann
    • 1
  • Dietrich L. Meyer
    • 1
  1. 1.Zentrum AnatomieAbteilung für Neuroanatomie der UniversitätGöttingenFederal Republic of Germany

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