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Tentacular ultrastructure and feeding behaviour of Neopentadactyla mixta (Holothuroidea: Dendrochirota)

Published online by Cambridge University Press:  16 October 2009

Timothy B. Smith
Timothy B. Smith
Affiliation:
Department of Zoology, University College, Galway, Republic of Ireland
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Abstract

Suspension-feeding in the holothurian Neopentadactyla mixta (Östergren), 1898 is accomplished by an adhesive secretion synthesized in modified retractable discs of epithelial cells located on the terminal tentacular nodes. Besides secretory cells, each disc epithelium is composed of three other cell types: ciliated, granular and nerve cells. The fine structure and possible functions of the epithelium are described with reference to the behaviour of tentacles during feeding and the observations are compared with existing information on holothuroid feeding mechanisms.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 63 , Issue 2 , May 1983 , pp. 301 - 311
Copyright
Copyright © Marine Biological Association of the United Kingdom 1983

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