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On The Fine Structure of Lateral-Line Canal Organs of the Herring (Clupea Harengus)

Published online by Cambridge University Press:  11 May 2009

J. Mørup Jørgensen
Affiliation:
Zoological Laboratory, University of Aarhus, DK-8000 Aarhus C, Denmark

Extract

The lateral-line system of water-living lower vertebrates is provided with mechanoreceptors enabling the animals to detect water displacements, either caused by moving objects such as prey, predators or neighbours in a school or by deformations of pressure waves from the swimming animal caused by other objects. Cyclostomes, some fish and water–living amphibians have their lateral-line organs situated superficially in the epidermis as free neuromasts, while most fish besides these neuromasts possess a canal system in the dermis. Ordinarily the lateral line canal system consists of a few canals on the sides of the head and a trunk canal. In herring, however, the canal system is confined to the head and opercule. It forms a very richly branched system with numerous pores which connect the canal fluid with the surrounding sea water.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1985

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