Ultrastructural reconstruction of Taenia ovis oncospheres from serial sections

Jabbar, Abdu, Crawford, Simon, Mlocicki, Daniel, Swiderski, Zdzisław P., Conn, David B., Jones, Malcolm K., Beveridge, Ian and Lightowlers, Marshall W. (2010) Ultrastructural reconstruction of Taenia ovis oncospheres from serial sections. International Journal For Parasitology, 40 12: 1419-1431. doi:10.1016/j.ijpara.2010.04.011

Author Jabbar, Abdu
Crawford, Simon
Mlocicki, Daniel
Swiderski, Zdzisław P.
Conn, David B.
Jones, Malcolm K.
Beveridge, Ian
Lightowlers, Marshall W.
Title Ultrastructural reconstruction of Taenia ovis oncospheres from serial sections
Journal name International Journal For Parasitology   Check publisher's open access policy
ISSN 0020-7519
Publication date 2010-10
Sub-type Article (original research)
DOI 10.1016/j.ijpara.2010.04.011
Volume 40
Issue 12
Start page 1419
End page 1431
Total pages 13
Place of publication United Kingdom
Publisher Elsevier Science
Collection year 2011
Language eng
Abstract The cellular organisation of Taenia ovis oncospheres is interpreted from ultrathin serial sections and transmission electron microscopy following high pressure freezing and freeze-substitution. The surface of a hatched, non-activated T. ovis oncosphere is covered by an oncospheral membrane below which is the tegument bearing microvilli. The basal lamina of the tegument is underlain by broad bands of peripheral somatic musculature. Three pairs of hooks and associated muscles are present in the somatophoric third of the oncosphere. Approximately 19 cells of seven different types were identified which include: (i) a quadri-nucleated syncytium of penetration gland type 1 containing two lateral pairs of cell bodies interconnected by narrow cytoplasmic bridges (PG1); (ii) a quadri-nucleated syncytium of penetration gland type 2 (PG2); (iii) a single-nucleated median mesophoric gland cell; (iv) 10 somatic cells; (v) two germinative cells; (vi) two nerve cells; and (vii) a pair of median somatophoric cells. This study provides a clear understanding of the morphology of T. ovis oncospheres and forms the basis for further investigations into the biology of taeniid oncospheres. © 2010 Australian Society for Parasitology Inc.
Keyword Taenia ovis
Non-activated oncosphere
Serial sections
Transmission electron microscopy
Host-parasite Interface
Metacestode Development
Taeniaeformis Cestoda
Electron Microscope
Hatched Oncospheres
Development Invitro
Hexacanth Embryos
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Received 1 April 2010; revised 22 April 2010; accepted 26 April 2010. Available online 15 May 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Veterinary Science Publications
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Created: Sun, 31 Oct 2010, 00:09:41 EST