Ultrastructural observations on the elusive subtegumental cells of the viviparous gill monogenean, Macrogyrodactylus clarii

El-Naggar, Mohammed Mohammed and Cable, Joanne ORCID: https://orcid.org/0000-0002-8510-7055 2007. Ultrastructural observations on the elusive subtegumental cells of the viviparous gill monogenean, Macrogyrodactylus clarii. Parasitology Research 101 (1) , pp. 9-17. 10.1007/s00436-006-0448-9

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Abstract

The ultrastructure of the tegument, including putative subtegumental cells, of the monogenean gill parasite Macrogyrodactylus clarii is described for the first time. The lateral cells are secretory in nature and can be classified into four types: T1 producing elongated, electron-dense, bodies (t1); T2 manufacturing electron-lucent vesicles (t2); T3 producing thin, dump-bell shaped, electron-dense bodies (t3); and T4 containing lyzosome-like inclusions. Morphologically, the T2 cells resemble those described as presumptive vitelline cells in other gyrodactylids whereas the T1, T3 and T4 cells are reported for the first time in gyrodactylids. The close similarity between the secretory inclusions of the outer syncytial layer of the tegument and those found in the T1, T2 and T3 cells suggests that these cells represent the enigmatic tegumental cell bodies rather than vitelline cells. The possible functions of the distinctive features of the tegument of M. clarii are discussed.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Subjects:	Q Science > QL Zoology
Publisher:	Springer Verlag
ISSN:	0932-0113
Last Modified:	27 Oct 2022 08:17
URI:	https://orca.cardiff.ac.uk/id/eprint/61860

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