| Home | E-Submission | Sitemap | Contact us |  
top_img
Korean J Parasitol > Volume 30(4):1992 > Article

Original Article
Korean J Parasitol. 1992 Dec;30(4):237-243. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1992.30.4.237
Copyright © 1992 by The Korean Society for Parasitology
Growth and development of Metorchis orientalis in chicks and its adult morphology
W M Sohn,J Y Chai,* and S H Lee*
Department of Parasitology, College of Medicine, Inje University, Pusan 614-735, Korea.
*Department of Parasitology and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 110-799, Korea.
Abstract

In order to observe the infectivity, growth and development and adult morphology of Metorchis orientalis, a total of 40 chicks were experimentally infected with 100 metacercariae respectively, collected from Pseudorasbora parva. The worms of various developmental stages were recovered from chicks at 1.5, 3, 5, 7, 9, 11, 14 and 21 days after infection, and they were prepared for morphological observations and measurements. All of the worms were found in the gallbladders of chicks, and their recovery rate was 32% in average. The growth of the body was rapid from 9 to 11 days after infection. The genital primordia appeared in 1.5 and 3-day old worms, and ovary and testes were first observed in 5-day old worms. Thereafter, genital organs gradually matured and completed up to 11 days after infection. The adult worm was leaf-like, and possessed a convoluted tubular seminal vesicle, an ovoid ovary, a sac-like seminal receptacle, 2 lobed-testes and follicular vitellaria. Eggs were 31.9 × 15.3 <m in average size, ellipsoid to elliptical in shape and possessed abopercular thickenings. From the above results, it is concluded that M. orientalis grows in sigmoid pattern in chicks, and their genital organs fully mature between days 9 and 11. It is also confirmed that a chick is a new definitive host of M. orientalis.

Figures


Fig. 1
The growth curve of M. orientalis up to 21 days after infection.


Figs. 2-7
Metorchis orientalis form the experimentally infected chicks.

Fig. 2. A 1,5-day old worm.

Fig. 3. A 3-day old worm.

Fig. 4. A 5-day old worm.

Fig. 5. A 7-day old worm.

Fig. 6. A 9-day old worm.

Fig. 7. A 11-day old worm.



Figs. 8-11
Metorchis orientalis form the experimentally infected chicks.

Fig. 8. A 14-day old worm, showing oral sucker (OS), seminal vesicle(SV), ventral sucker(VS), vitellaria(V), uterus(U), ovary(O), seminal receptacle(SR), testis(T) and cecum(C).

Figs. 9~10. Two 21-day old worms.

Original Article Intrauterine eggs of M. orientalis.

*Bar unit is mm.


Tables


Table 1
Recovery rate of M. orientalis from the experimentally infected chicks


Table 2
Measurements* of M. orientalis recovered from the experimentally infected chicks

References
1. Seo BS, Park YH, Chai JY, Hong SJ, Lee SH. [Studies On Intestinal Trematodes In Korea Xiv. Infection Status Of Loaches With Metacercariae Of Echinostoma Cinetorchis And Their Development In Albino Rats]. Korean J Parasitol 1984;22(2):181–189.
 
2. Ciurea I. Z Infektionskr Parasit Kr Hyg Haustiere 1917;18:301–333.
3. Dawes B. On the growth and maturation of Fasciola hepatica L. in the mouse. J Helminthol 1962;36:11–38.
  
4. Hasegawa T. Okayama Igakkai asshi 1935;46(6):1397–1434.
5. Heimenann E. Z Parasitenkd 1937;9:23–260.
6. Hong SJ, Seo BS, Lee SH, Chai JY. A human case of Centrocestus armatus infection in Korea. Korean J Parasitol 1988;26(1):55–60.
 
7. Hsu HF, et al. Chinese Med J 1938 Suppl 2:433–440.
8. Kennedy MJ. Proc Helminthol Soc Wash 1983;50(2):312–317.
9. Kobayashi H. Mitt Med Akad Keijo 1917;1:251–284.
10. Lee SH, Hwang SW, Chai JY, Seo BS. Comparative Morphology Of Eggs Of Heterophyids And Clonorchis Sinensis Causing Human Infections In Korea. Korean J Parasitol 1984;22(2):171–180.
 
11. Lee SH, Shin SM, Hong ST, Sohn WM, Chai JY, Seo BS. Growth and development of Fibricola seoulensis metacercariae in tadpoles. Korean J Parasitol 1986;24(2):109–114.
 
12. Meyer MC. J Parasit 1949;35 Suppl:39.
13. Morishita K. Annot Zool Jap 1929;12:143–170.
14. Watson TG. Canadian J Zool 1981;59:2014–2019.
 
15. Yamaguti S. Jap J Zoo 1933;5:62.
16. Yamaguti S. Jap J Zoo 1934;5:545.
Editorial Office
c/o Department of Medical Environmental Biology
Chung-AngUniversity College of Medicine, Dongjak-gu, Seoul 06974, Korea
Tel: +82-2-820-5683   Fax: +82-2-826-1123   E-mail: kjp.editor@gmail.com
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © 2019 by The Korean Society for Parasitology and Tropical Medicine. All rights reserved.     powerd by m2community