Ultrastructure and Cytochemistry of the Tegument of Atriaster heterodus (Platyhelminthes: Monogenea)
The tegument of the polyopisthocotylean monogenean Atriaster heterodus Lebedev & Parukhin, 1969 was studied using transmission electron microscopy. The outer syncytial layer of the tegument is connected to the internal cell bodies by cytoplasmic extensions which interweave between the muscular f...
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Veröffentlicht in: | Memórias do Instituto Oswaldo Cruz 2000-12, Vol.95 (6), p.899-904 |
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Zusammenfassung: | The tegument of the polyopisthocotylean monogenean Atriaster heterodus
Lebedev & Parukhin, 1969 was studied using transmission electron
microscopy. The outer syncytial layer of the tegument is connected to
the internal cell bodies by cytoplasmic extensions which interweave
between the muscular fibres. The free surface of the syncytium has
projections of the external membrane which are similar to microvilli.
The undulating basal membrane, with numerous narrow elongate
projections, is associated with the basal lamina situated between the
syncytial and muscular layers. The cell bodies and syncytial layer of
the tegument exhibit two types of vesicles, one with fibrous contents
and one with electron-dense contents; these were analysed using two
cytochemical tests, the E-PTA and alcian blue methods, used for the
first time on monogeneans. |
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ISSN: | 1678-8060 0074-0276 0074-0276 1678-8060 |
DOI: | 10.1590/S0074-02762000000600028 |