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The initial development of gangliar rudiments in a posterior position in mytilus galloprovincialis (Mollusca: Bivalvia)

Published online by Cambridge University Press:  11 May 2009

M. Raineri  and
M. Ospovat
M. Raineri
Affiliation:
Institute of Comparative Anatomy, University of Genoa, 16136 Genoa, Italy
M. Ospovat
Affiliation:
Institute of Comparative Anatomy, University of Genoa, 16136 Genoa, Italy
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Extract

Histochemical methods for cholinesterase activities were applied to embryos and early larvae of the marine mussel Mytilus galloprovincklis Lamarck (Mollusca: Bivalvia: Mytilidae) and demonstrated that the cerebral ganglia, which are generally accepted as the first differentiating ganglia, appear after two bilaterally symmetrical nerve rudiments have developed in a posterior position prior to the trochophore stage. They are intimately associated with non-nervous superficial cells in two structures which have features of sensory organs.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 74 , Issue 1 , February 1994 , pp. 73 - 77
Copyright
Copyright © Marine Biological Association of the United Kingdom 1994

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