| Home | E-Submission | Sitemap | Contact us |  
Korean J Parasito Search


Parasit Host Dis > Volume 6(3):1968 > Article

Original Article
Korean J Parasitol. 1968 Dec;6(3):111-122. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1968.6.3.111
Copyright © 1968 by The Korean Society for Parasitology
Ultrastructure of the integument of adult Clonorchis sinensis
Chong Hwan Kim
Department of Parasitology, College of Medicine, Yonsei University, Korea.

Ultrastructural studies on the integument of digenetic trematodes were investigated by several workers (Senft et al., 1961; Bjorkman and Thorsell, 1964; Burton, l966; Erasmus, l968; Morris and Threadgold, 1967, l968).

Clonorchis sinensis is a common parasite of human beings in the Far East. But as far little has been written on ultrastructure of the integument of this parasite.

This study was carried out systematically to elucidate the ultrastructure of the integument of adult C. sinensis, and the results are summarized as follows:

1. The integument of C. sinensis was organized in two parts; the epidermis and the muscular layer.

2. The apical surface and basal surface of the epidermis were covered with typical plasma membrane and irregularly invaginated from the surface. Plasma membrane at perisuckers was extremely folded and appeared as if the epidermis might be divided with the layer.

3. The syncytial epidermis contained mitochondria and numerous secretory bodies, and which was connected by cytoplasmic processes to nucleated epidermal cells lying in the parenchyma.

4. The mitochondriae, the secretory bodies, the granular endoplasmic reticulum, the Golgi bodies and the free ribosomes were present in the perinuclear cytoplasm of epidermal cells, but no organelle was observed in processes of epidermal cell except some secretory bodies.

5. The fibrous layer consists of argentophile fiber and collagenous fiber, in which the circular muscle bundles and longitudinal muscle bundles were embedded. Bundles of muscle fiber are weIl developed at the perisucker, and mitochondriae in this portion contain many cristae as compared with any other parts of C. sinensis.


Fig. 1
Electron-microscopic finding of tegument of Clonorchis sinensis.

Fig. 2
Electron-microscopic finding of tegument and muscle of Clonorchis sinensis.

Fig. 3
Electron-microscopic finding of epithelium of sucker of Clonorchis sinensis.

Fig. 4
Electron-microscopic finding of cytoplasm of tegument of Clonorchis sinensis.

Fig. 5
Electron-microscopic finding of excretory granule of tegument of Clonorchis sinensis.

Fig. 6
Electron-microscopic finding of muscle of sucker of Clonorchis sinensis.

Fig. 7
Electron-microscopic finding of nucleus of tegumental cell of Clonorchis sinensis.

1. Bils RF, Martin WE. Fine structure and development of the trematode integument. Trans Am Microsc Soc 1966;85(1):78–88.
2. Bjoerkman N, Thorsell W. On The Fine Structure And Resorptive Function Of The Cuticle Of The Liver Fluke, Fasciola Hepatica L. Exp Cell Res 1964;33:319–329.
3. Burton PR. The Ultrastructure of the Integument of the Frog Lung-Fluke, Haematoloechus Medioplexus (Trematoda: Plagiorchiidae). J Morphol 1964;115:305–317.
4. Burton PR. The ultrastructure of the integument of the frog bladder fluke, Gorgoderina sp. J Parasitol 1966;52(5):926–934.
5. Erasmus DA. The host-parasite interface of Cyathocotyle bushiensis Khan, 1962 (Trematoda: Strigeoidea)l. II. Electron microscope studies of the tegument. J Parasitol 1967;53(4):703–714.
6. Erasmus AD. Parasitology 1968;58:371–375.
7. Luft JH. Improvements in epoxy resin embedding methods. J Biophys Biochem Cytol 1961;9:409–414.
8. Morris GP, Threadgold LT. A presumed sensory structure associated with the tegument of Schistosoma mansoni. J Parasitol 1967;53(3):537–539.
9. Morris GP, Threadgold LT. Ultrastructure of the tegument of adult Schistosoma mansoni. J Parasitol 1968;54(1):15–27.
10. Senft AW, Philpott DE, Pelofsky AH. Electron microscope observations of the integument, flame cells, and gut of Schistosoma mansoni. J Parasitol 1961;47:217–229.
11. Takagi K. Tokushima J Exp Med 1962;9(1):60–66.
12. Threadgold LT. Quar J Micr Sci 1963;104:505–512.
13. Threadgold LT. Parasitology 1965;55:467–472.
14. Threadgold LT. The tegument and associated structures of Haplometra cylindracea. Parasitology 1968;58(1):1–7.
Editorial Office
Department of Molecular Parasitology, Samsung Medical Center, School of Medicine, Sungkyunkwan University,
2066 Seobu-ro, Jangan-gu, Suwon 16419, Gyeonggi-do, Korea.
Tel: +82-31-299-6251   FAX: +82-1-299-6269   E-mail: kjp.editor@gmail.com
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © 2023 by The Korean Society for Parasitology and Tropical Medicine.     Developed in M2PI