Table of Contents > Full Text
Original Article



Korean J Parasitol. 1993 Mar;31(1):1-6. English.
Published online 1994 March 20.혻혻http://dx.doi.org/10.3347/kjp.1993.31.1.1
Copyright 짤 1993 by The Korean Society for Parasitology
Morphologic descriptions of Taenia asiatica sp. n.
Keeseon S. Eom,1 and Han-Jong Rim2
1Department of Parasitology, College of Medicine, Chungbuk National University, Chongju 360-763, Korea.
2Department of Parasitology, College of Medicine, Korea University, Seoul 136-705, Korea.
Received November 17, 1992; Accepted January 07, 1993.



Abstract

Among taeniid tapeworms infecting humans through pork or beef, Taenia solium Linnaeus 1758 and Taenia saginata Goeze 1782 have already been known. Based on the morphologic characteristics of adult and metacestodes of Asian Taenia saginata, the third kind of human taeniid tapeworm known to distribute in Asian countries, a new species name of Taenia asiatica is proposed. In addition to the known biology in their intermediate hosts, T. asiatica was different morphologically from Taenia saginata Goeze 1782 in having the unarmed rostellum on the scolex of adult, the large number of 'uterine twigs' and the existence of 'posterior protuberance'. These structures in the gravid proglottids were used as taxonomic keys in taeniid tapeworms for the first time. T. asiatica metacestode (Cysticercus viscerotropica) was different morphologically from T. saginata metacestode (Cysticercus bovis) in having wartlike formations on the external surface of the bladder wall.

Figures


Figs. 1-6
Fig. 1. Scolex of Asian T. saginata with rostellum. Fig. 2. Gravid proglottid (unpressed), PP: posterior protuberance. Fig. 3. Mature proglottid. Fig. 4. Gravid proglottid (pressed), ut: uterine twigs. Fig. 5. Egg. Fig. 6. Metacestode with wartlike formations on the bladder surface.

References
1. Chao D, Wong MM, Fan PC. Experimental infection in a human subject by a possibly undescribed species of Taenia in Taiwan. J Helminthol 1988;62(3):235242.
2. Cross JH, Murrell KD. The 33rd SEAMEO-TROPMED Regional Seminar on Emerging Problems in Food-Borne Parasitic Zoonoses: Impact on Agriculture and Public Health. Southeast Asian J Trop Med Public Health 1991;22(1):415.
4. Eom KS, Rim HJ. Natural infections of Asian Taenia saginata metacestodes in the livers of Korean domestic pigs. Korean J Parasitol 1992;30(1):1520.
5. Eom KS, Rim HJ. Experimental human infection with Asian Taenia saginata metacestodes obtained from naturally infected Korean domestic pigs. Korean J Parasitol 1992;30(1):2124.
6. Eom KS, Rim HJ, Geerts S. Experimental infection of pigs and cattle with eggs of Asian Taenia saginata with special reference to its extrahepatic viscerotropism. Korean J Parasitol 1992;30(4):269275.
8. Fan PC. Taiwan taenia and taeniasis. Parasitol Today 1988;4(3):8688.
9. Fan PC, et al. Chinese J Parasitol 1988;1:5670.
10. Kang SY, et al. Korean J Int Med 1965;8:341348.
12. Slais J, et al. Zool Anz 1976;196:8592.
14. Verster A. Redescription of Taenia solium Linnaeus, 1758 and Taenia saginata Goeze, 1782. Z Parasitenkd 1967;29(4):313328.
15. Verster A. A toxonomic revision of the genus Taenia Linnaeus, 1758 S. str. Onderstepoort J Vet Res 1969;36(1):358.
17. Zarlenga DS, McManus DP, Fan PC, Cross JH. Characterization and detection of a newly described Asian taeniid using cloned ribosomal DNA fragments and sequence amplification by the polymerase chain reaction. Exp Parasitol 1991;72(2):174183.
18. Zdarska Z. Morphological and histochemical demonstration of hooks in the rostellar region of Cysticercus bovis. Folia Parasitol (Praha) 1976;23(2):131134.
Figures:
   Indexed in Science Citation Index Expanded from 2008
   Copyright © 2014 The Korean Society of Pathologists/The Korean Society for Cytopathology