Abstract
This study was performed to observe the chronological changes in the tegumental structure of M. yokogawai using scanning electron microscope. The subjected worms were excysted metacercariae obtained from sweetfish, and 2-day, 1-week and 4-week old worms experimentally reared in albino rats. The results are as follows: The tegument of excysted metacercariae showed many transverse shallow rugae, which were more remarkable in posterior half body, i.e., posterior to ventral sucker. The whole surface was armed with many scale-like spines; 7-8 pointed ones on anterior body and 2-3 pointed on posterior body. The ciliated knob-like papillae (Type I) were abundant around oral and ventral suckers, which grouped 2, 3 or 4 in number in most cases. A few round swellings of tegument (Type II) were observed only on oral sucker. The tegumental surface of 2-day old worms showed deeper rugae, and the anterior half covered with knob-like processes of distal cytoplasm and the posterior half with cobblestone-like ones. Interspinous space became more wide and 9 pointed spines appeared on anterior dorsal surface.
The sensory papillae enlarged but not changed in their distribution. The tegument of 1-week old worms revealed knob-like cytoplasmic processes in posterior half body and velvety ones around oral sucker. The scale-Iike spines of anterior half body changed remarkably to the slender ones of posterior body at the level of ventral sucker. In dorsal surface, the arrangement of the Type I papillae were bilaterally symmetrical. The tegument of 4-week old worms were finely differentiated and the posterior tegument covered with velvety cytoplasmic processes. The spines had remarkably grown in length and width but the density remained nearly unchanged. The papillae also became larger but their morphology and distribution were not different from younger worms. However, the round elevation of cytoplasmic ridges (Type III papilla) appeared bilaterally on inner wall of oral sucker, approximately 8 in number.
From the above results, it is considered that the tegument of juvenile M. yokogawai continued to differentiate until 4 weeks after infection.
Citations
Citations to this article as recorded by
- Body Surface Ultrastructure as a Main Morphological Criterion for Distinguishing Adult Trematode Metagonimus suifunensis
Polina Shumenko, Yulia Tatonova, Mikhail Shchelkanov
Biology.2024; 13(11): 942. CrossRef - Taxonomic tools for the identification of Allogenarchopsis bareilliensis n. sp. (Digenea: Hemiuroidea: Derogenidae) from Channa striata of Rohilkhand, India based on light and scanning electron microscopic studies
Neelima Gupta, Dileep K. Gupta, Misako Urabe
Journal of Parasitic Diseases.2017; 41(1): 29. CrossRef - Topography and ultrastructure of the tegument of Deropristis inflata Molin, 1859 (Digenea: Deropristidae), a parasite of the European eel Anguilla anguilla (Osteichthyes: Anguillidae)
Jean-José Filippi, Yann Quilichini, Bernard Marchand
Parasitology Research.2013; 112(2): 517. CrossRef - Topography and ultrastructure of the tegument of Lecithochirium musculus (digenea: Hemiuridae), a parasite of the European eel Anguilla anguilla (osteichthyes: Anguillidae)
Jean‐José Filippi, Yann Quilichini, Joséphine Foata, Bernard Marchand
Journal of Morphology.2012; 273(4): 361. CrossRef - Topography and Ultrastructure of the Tegument of Bucephalus anguillae (Digenea: Bucephalidae), a Parasite of the European Eel Anguilla anguilla (Osteichthyen: Anguillidae)
Jean-José Filippi, Yann Quilichini, Joséphine Foata, Bernard Marchand
Journal of Parasitology.2010; 96(6): 1102. CrossRef - Surface ultrastructure of Plagiorchis muris growth and developmental stages in rats, the final host
Sung-Jong Hong
Parasitology Research.2009; 105(4): 1077. CrossRef - Surface ultrastructure of the plagiorchid trematode Glossidium pedatum Looss, 1899 from bagrid fish in Egypt
Mohammed Hasan Ibraheem
Acta Zoologica.2007; 88(2): 173. CrossRef - Developmental surface ultrastructure of Macroorchis spinulosus in albino rats
Sung-Jong Hong, Ho-Chun Woo, Oh Sil Kwon
The Korean Journal of Parasitology.2004; 42(4): 151. CrossRef - Surface ultrastructure of the adult stage of Acanthotrema felis (Trematoda: Heterophyidae)
Woon-Mok Sohn, Min Seo, Jong-Yil Chai
The Korean Journal of Parasitology.2003; 41(2): 107. CrossRef - Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes
Jong-Yil Chai, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee
The Korean Journal of Parasitology.2002; 40(3): 107. CrossRef - A review of Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections in the Republic of Korea
Soon-Hyung Lee, Jong-Yil Chai
The Korean Journal of Parasitology.2001; 39(2): 85. CrossRef - Surface ultrastructure of Stictodora tridactyla (Trematoda: Heterophyidae) from Kuwait Bay
J Abdul-Salam, B.S Sreelatha, H Ashkanani
Parasitology International.2000; 49(1): 1. CrossRef - Surface ultrastructure of Metagonimus takahashii metacercariae and adults
Jong-Yil Chai, Sang-Mee Guk, Eun-Taek Han, Min Seo, Eun-Hee Shin, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee
The Korean Journal of Parasitology.2000; 38(1): 9. CrossRef - Surface morphology of Probolocoryphe uca (Sarkisian, 1957) (Digenea: Microphallidae) from Kuwait Bay
J. Abdul-Salam, B.S. Sreelatha
Systematic Parasitology.2000; 46(3): 209. CrossRef - Surface ultrastructure of Metagonimus miyatai metacercariae and adults
J Y Chai, Y J Kang, S Y Choi, S M Guk, J R Yu, S H Lee
The Korean Journal of Parasitology.1998; 36(4): 217. CrossRef - Surface ultrastructure of juvenile and adult stages of Centrocestus armatus
Ho-Choon Woo, Myung-Deuk Seo, Sung-Jong Hong
Journal of Helminthology.1998; 72(3): 215. CrossRef - Centrocestus formosanus: surface morphology of metacercaria, adult and egg
T. Srisawangwong, S. Pinlaor, P. Kanla, P. Sithithaworn
Journal of Helminthology.1997; 71(4): 345. CrossRef - Surface ultrastructure of Parvatrema timondavidi (Digenea:Gymnophallidae) according to its developmental stages
Jae Ran YU, Jin Young PARK, Jong Yil CHAI
The Korean Journal of Parasitology.1994; 32(2): 65. CrossRef - Tegumental ultrastructure of juvenile and adult Echinostoma cinetorchis
S H Lee, H S Jun, W M Sohn, J Y Chai
The Korean Journal of Parasitology.1992; 30(2): 65. CrossRef - Surface ultrastructure of Heterophyes nocens (Trematoda: Heterophyidae)
J Y Chai, H L Chung, M H Choi, W M Sohn, S J Hong, S H Lee
The Korean Journal of Parasitology.1992; 30(2): 75. CrossRef - Antigenic localities in the tissues of Metagonimus yokogawai observed by immunogoldlabeling method
H Ahn, H J Rim, S J Kim
The Korean Journal of Parasitology.1991; 29(3): 245. CrossRef - A scanning electron microscope study on the tegument of Proalarioides kobayashii Park, 1940 (Trematoda)
J P Chu, I S Im, I D Hwang
The Korean Journal of Parasitology.1991; 29(2): 173. CrossRef - Intestinal trematodes of humans in Korea: Metagonimus, heterophyids and echinostomes
J Y Chai, S H Lee
The Korean Journal of Parasitology.1990; 28(Suppl): s103. CrossRef - Scanning electron microscopy of the tegumental surface of adultHaplorchis pumilio(Looss)
Tuanchai Srisawangwonk, Pipatpong Kanla, Smarn Tesana, Channarong Arunyanart
Journal of Helminthology.1989; 63(2): 141. CrossRef - Tegumental ultrastructures of Paragonimus iloktsuenensis according to the developmental stages
S H Lee, S J Kim, J Y Chai, W M Sohn
The Korean Journal of Parasitology.1989; 27(1): 57. CrossRef - Szidatia joyeuxi (Trematoda: Cyathocytylidae): morphological and tegumental changes during growth in the definitive host
Ahmed Mouahid
Systematic Parasitology.1989; 13(2): 125. CrossRef - Ultrastructural studies on the surface of Paragonimus westermani metacercaria
Kyong Min Kim, Myoung Hee Ahn, Duk Young Min
The Korean Journal of Parasitology.1987; 25(2): 129. CrossRef - Scanning electron microscopical findings of Echinochasmus japonicus tegument
Soon Hyung Lee, Woon Mok Sohn, Sung Tae Hong
The Korean Journal of Parasitology.1987; 25(1): 51. CrossRef - In vitro effect of praziquantel on Paragonimus westermani by light and scanning electron microscopic observation
Soon Hyung Lee, Ho Jin Park, Sung Jong Hong, Jong Yil Chai, Sung Tae Hong
The Korean Journal of Parasitology.1987; 25(1): 24. CrossRef - Tegumental ultrastructures of Echinostoma hortense observed by scanning electron microscopy
Soon Hyung Lee, Sung Jong Hong, Jong Yil Chai, Sung Tae Hong, Byong Seol Seo
The Korean Journal of Parasitology.1986; 24(1): 63. CrossRef - In situ posture of anterior body of Metagonimus yokogawai in experimentally infected dog
Young Kee Jang, Shin Yong Kang, Suk Il Kim, Seung Yull Cho
The Korean Journal of Parasitology.1985; 23(2): 203. CrossRef - Studies on intestinal trematodes in Korea X. Scanning electron microscopic observation on the tegument of Fibricola seoulensis
Byong Seol Seo, Soon Hyung Lee, Jong Yil Chai, Sung Tae Hong, Sung Jong Hong
The Korean Journal of Parasitology.1984; 22(1): 21. CrossRef
