Parasites, Hosts and Diseases

"Ok-Sik Chung"

Brief Communications

Recovery of Oswaldotrema nacinovici from Whimbrels (Aves) in Korea: Young-Il Lee, Ok-Sik Chung, Min Seo; Korean J Parasitol 2016;54(6):809-812.
Published online December 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.6.809

Abstract
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Adult specimens of Oswaldotrema nacinovici (Digenea: Philophthalmidae) have been first identified in Korea from 2 migratory birds (whimbrels, Numenius phaeopus) which were found dead at a western seashore area near Gunsan. The worms were recovered in the intestine of these birds. The worms were morphologically characterized by a large ventral sucker in comparison to the oral sucker, an external seminal vesicle extending beyond the posterior margin of the ventral sucker, and conspicuous uterine seminal receptacle. It was noteworthy that metacercariae-like bodies were contained within the inflated regions of 2 ceca. Other intestinal trematode species found in whimbrels included Spelotrema pygmeum, Gynaecotyla squatarolae, Maritrema obstipum, and Himasthla megacotyle. Zoonotic potential of these trematode species should be taken into considerations.

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New Definitive Hosts and Differential Body Indices of Isthmiophora hortensis (Digenea: Echinostomatidae)
Woon-Mok Sohn, Byoung-Kuk Na, Sung-Shik Shin
The Korean Journal of Parasitology.2017; 55(3): 287. CrossRef
Prevalence and Density of Digenetic Trematode Metacercariae in Clams and Oysters from Western Coastal Regions of the Republic of Korea
Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Won-Ja Lee
The Korean Journal of Parasitology.2017; 55(4): 399. CrossRef
Echinostoma macrorchis (Digenea: Echinostomatidae): Metacercariae in Cipangopaludina chinensis malleata Snails and Adults from Experimental Rats in Korea
Woon-Mok Sohn, Byoung-Kuk Na
The Korean Journal of Parasitology.2017; 55(5): 541. CrossRef

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Seroprevalence of Trichinella sp. in Wild Boars (Sus scrofa) from Yanggu-gun, Gangwon-do, Korea: Hye-Jung Lee, Ok-Sik Chung, Jae-Lip Kim, Seung-Ha Lee, Young-Bok Yoo, Min Seo; Korean J Parasitol 2015;53(2):233-236.
Published online April 22, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.2.233

Abstract
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A total 7 outbreaks of trichinellosis have occurred in Korea, mostly as a result of consumption of raw wild boar (Sus scrofa) meat. Since only 1 serological survey on wild boars had yet been performed in Korea, the present study aimed to estimate the prevalence of trichinellosis in wild boars and some species of rodents by artificial digestion and serological examinations in Yanggu-gun, Gangwon-do, the endemic area of trichinellosis. Both the wild boar and rodent muscle samples revealed no Trichinella larvae by direct examination and artificial digestion method. However, serological examinations revealed that 4 wild boar sera samples out of 118 (3.4%) were positive to Trichinella antigen. Although the recovery of Trichinella larvae ended in a failure, it is proved for the first time that the sylvatic cycle of Trichinella has been maintained in wild boars of Gangwon-do, Korea.

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Differences in larval survival and IgG response patterns in long-lasting infections by Trichinella spiralis, Trichinella britovi and Trichinella pseudospiralis in pigs
Edoardo Pozio, Giuseppe Merialdi, Elio Licata, Giacinto Della Casa, Massimo Fabiani, Marco Amati, Simona Cherchi, Mattia Ramini, Valerio Faeti, Maria Interisano, Alessandra Ludovisi, Gianluca Rugna, Gianluca Marucci, Daniele Tonanzi, Maria Angeles Gómez-M
Parasites & Vectors.2020;[Epub] CrossRef
Wild Boar: A Reservoir of Foodborne Zoonoses
Maria Fredriksson-Ahomaa
Foodborne Pathogens and Disease.2019; 16(3): 153. CrossRef
A systematic review and meta-analysis on the global seroprevalence of Trichinella infection among wild boars
Ali Rostami, Seyed Mohammad Riahi, Reza Ghadimi, Hooman Hanifehpour, Faezeh Hamidi, Hooshang Khazan, H. Ray Gamble
Food Control.2018; 91: 404. CrossRef
Screening and characterization of early diagnostic antigens in excretory–secretory proteins from Trichinella spiralis intestinal infective larvae by immunoproteomics
Ruo Dan Liu, Peng Jiang, Hui Wen, Jiang Yang Duan, Li Ang Wang, Jie Feng Li, Chun Ying Liu, Ge Ge Sun, Zhong Quan Wang, Jing Cui
Parasitology Research.2016; 115(2): 615. CrossRef

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Discovery of Endocotyle incana and Spelotrema pseudogonotyla (Digenea: Microphallidae) from Scolopacid Migratory Birds in Korea: Ho-Jin Yoo, Ok-Sik Chung, Min Seo; Korean J Parasitol 2012;50(3):273-276.
Published online August 13, 2012; DOI: https://doi.org/10.3347/kjp.2012.50.3.273

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Migratory birds have been suspected as playing a central role in transmission of various trematodes, but few surveys have been undertaken in the Republic of Korea. In the present study, we describe new fauna of microphallid flukes in Korea. Two species of microphallids were found in the intestines of 2 migratory bird species, namely the red necked stints (Calidris ruficollis) and the terek sandpiper (Xenus cinereus), in a coastal area of Gunsan-si, Jeollabuk-do. The microphallids recovered from the latter were 451 ?m in length and 217 ?m in width, and the eggs were very small, 13 ?m by 8 ?m. They had the characteristic extracecal vitellaria intruding into the median posttesticular area, belonging to Endocotyle incana. Another microphallids were discovered from both migratory birds, 417 ?m in length and 249 ?m in width. The cirrus was projecting into the genital atrium in form of male papilla, and bounded by a muscular flap, termed pseudogonotyl. They were identified as Spelotrema pseudogonotyla in consideration of the distinctive male papilla and pseudogonotyl. Besides these flukes, Maritrema obstipum and Gynaecotyla squatarolae also were recovered. This paper is in fact the first report on the presence of Spelotrema and Endocotyle in Korea.

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Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
Woon-Mok Sohn, Byoung-Kuk Na
The Korean Journal of Parasitology.2019; 57(3): 273. CrossRef
New Record of Schistorophus cirripedesmi (Nematoda: Acuariidae) from a Bar-Tailed Godwit, Limosa lapponica baueri (Charadriformes: Scolopacidae) in Korea
Seongjun Choe, Hyun Kim, Junsik Lim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Heejong Kim, Youngjun Kim, Keeseon S. Eom
The Korean Journal of Parasitology.2016; 54(3): 349. CrossRef
Recovery of Oswaldotrema nacinovici from Whimbrels (Aves) in Korea
Young-Il Lee, Ok-Sik Chung, Min Seo
The Korean Journal of Parasitology.2016; 54(6): 809. CrossRef

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Discovery of Maritrema obstipum (Digenea: Microphallidae) from Migratory Birds in Korea: Ok-Sik Chung, Woon-Mok Sohn, Jong-Yil Chai, Min Seo, Hye-Jung Lee; Korean J Parasitol 2011;49(4):457-460.
Published online December 16, 2011; DOI: https://doi.org/10.3347/kjp.2011.49.4.457

Abstract
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Adults of Maritrema obstipum (Digenea: Microphallidae) were found in the intestines of 4 species of migratory birds, including the sanderling (Crocethia alba), Kentish plover (Charadrius alexandrines), Mongolian plover (Charadrius mongolus), and red-necked stint (Calidris ruficollis), collected from Yubu Island, Chungcheongnam-do, Korea. The worms of were 451×265 ?m in size, and were easily identifiable as Maritrema species by the presence of the cirrus sac, and the ring-like distribution of the vitellaria. More specifically, the ejaculatory duct curved posteromedially, and the 2 parts of vitelline follicles were found to be distinct at the posterior end. The eggs were brown-colored, and 19.8×12.3 ?m in size. All these findings implicated M. obstipum as the pertinent species of the worms. Beside these, adult worms of Gynaecotyla squatarolae, Parvatrema duboisi, and Acanthoparyphium sp. were also discovered. This is the first report establishing migratory birds as the natural definitive hosts for M. obstipum.

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Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
Woon-Mok Sohn, Byoung-Kuk Na
The Korean Journal of Parasitology.2019; 57(3): 273. CrossRef
New Record of Schistorophus cirripedesmi (Nematoda: Acuariidae) from a Bar-Tailed Godwit, Limosa lapponica baueri (Charadriformes: Scolopacidae) in Korea
Seongjun Choe, Hyun Kim, Junsik Lim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Heejong Kim, Youngjun Kim, Keeseon S. Eom
The Korean Journal of Parasitology.2016; 54(3): 349. CrossRef
Recovery of Oswaldotrema nacinovici from Whimbrels (Aves) in Korea
Young-Il Lee, Ok-Sik Chung, Min Seo
The Korean Journal of Parasitology.2016; 54(6): 809. CrossRef
Discovery of Endocotyle incana and Spelotrema pseudogonotyla (Digenea: Microphallidae) from Scolopacid Migratory Birds in Korea
Ho-Jin Yoo, Ok-Sik Chung, Min Seo
The Korean Journal of Parasitology.2012; 50(3): 273. CrossRef

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Discovery of Maritrema jebuensis n. sp. (Digenea: Microphallidae) from the Asian Shore Crab, Hemigrapsus sanguineus, in Korea: Ok-Sik Chung, Hye-Jung Lee, Woon-Mok Sohn, Seung-Ha Lee, Il-Yong Park, Sang-Ah Oh, Jong-Yil Chai, Min Seo; Korean J Parasitol 2010;48(4):335-338.
Published online December 16, 2010; DOI: https://doi.org/10.3347/kjp.2010.48.4.335

Abstract
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Maritrema spp. (Digenea: Microphallidae) are parasites of birds, but have not been found in the Republic of Korea. In this study, metacercariae of Maritrema sp. were discovered in the Asian shore crab, Hemigrapsus sanguineus, caught in the mud-flats of Jebu-do, Hwasung-gun, Gyeonggi-do, and the adult flukes were confirmed by experimental infection into mice. Based on the symmetric ribbon-like vitellarium, adult flukes of Maritrema sp. were identified, but did not belong to previously described species in terms of the following morphologic characteristics: ceca reaching to the lateral wall at the anterior border of the ovary; ventral sucker larger than oral sucker; a prominent metraterm; and vitellarium forming a complete ring. Hence, we named this microphallid M. jebuensis n. sp. after the island where the second intermediate hosts were collected. From this study, it has been shown that Maritrema sp. is distributed in Korea and transmitted by the Asian shore crab, H. sanguineus.

Citations

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Molecular characterization of Microphallus sp. (Digenea: Microphallidae) parasitic in freshwater crabs of Manipur, India
Voleentina Devi Athokpam, Lalit Mohan Goswami, Veena Tandon
Journal of Parasitic Diseases.2024; 48(3): 570. CrossRef
Maritrema patagonican. sp. (Digenea: Microphallidae) cultured from Metacercariae from Freshwater Anomuran,Aeglaspp. (Decapoda: Aeglidae), in Patagonia
Carlos A. Rauque, Verónica R. Flores, Norma L. Brugni
Comparative Parasitology.2013; 80(2): 196. CrossRef
Discovery ofMaritrema obstipum(Digenea: Microphallidae) from Migratory Birds in Korea
Ok-Sik Chung, Woon-Mok Sohn, Jong-Yil Chai, Min Seo, Hye-Jung Lee
The Korean Journal of Parasitology.2011; 49(4): 457. CrossRef
Parasites of shore crabs in the genusHemigrapsus(Decapoda: Brachyura: Varunidae) and their status in crabs geographically displaced: a review
John J. McDermott
Journal of Natural History.2011; 45(39-40): 2419. CrossRef

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Discovery of Parvatrema duboisi and Parvatrema homoeotecnum (Digenea: Gymnophallidae) from Migratory Birds in Korea: Ok-Sik Chung, Hye-Jung Lee, Woon-Mok Sohn, Yun-Kyu Park, Jong-Yil Chai, Min Seo; Korean J Parasitol 2010;48(3):271-274.
Published online September 16, 2010; DOI: https://doi.org/10.3347/kjp.2010.48.3.271

Abstract
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Adult worms of Parvatrema spp. (Digenea: Gymnophallidae) were found in the intestines of 2 species of migratory birds, i.e., a great knot, Calidris tenuirostris, and 2 Mongolian plovers, Charadrius mongolus, in the coastal area of Gunsan-si, Jeollabuk-do in October 2009. The recovered Parvatrema worms were 79 in total number and composed of 2 species. The worms from a great knot were 289 ?m in length with the oral and ventral sucker ratio of 2 : 1. They had a single vitellarium, and their intrauterine eggs were 25.0 × 17.5 ?m in size. These findings were compatible with P. duboisi (Dollfus, 1923) Bartoli, 1974 (syn. P. timondavidi Bartoli, 1963). The worms recovered from the Mongolian plovers were smaller in length than P. duboisi and had 2 vitellaria. The oral and ventral sucker ratio was 2.5 : 1, and the eggs were 17.5 × 8.8 ?m in size. These worms were assigned to be P. homoeotecnum James, 1964. This is the first report on the natural final hosts of Parvatrema spp. in Korea.

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Parvatrema spp. (Digenea, Gymnophallidae) with parthenogenetic metacercariae: diversity, distribution and host specificity in the palaearctic
Kirill V. Galaktionov, Anna Gonchar, Daria Postanogova, Aleksei Miroliubov, Semen Yu. Bodrov
International Journal for Parasitology.2024;[Epub] CrossRef
Parvatrema duboisi (Digenea: Gymnophallidae) Life Cycle Stages in Manila Clams, Ruditapes philippinarum, from Aphae-do (Island), Shinan-gun, Korea
Bong-Kwang Jung, Taehee Chang, Hyejoo Shin, Seungwan Ryoo, Sooji Hong, Jeonggyu Lee, Hyemi Song, Jaeeun Cho, Deok-Gyu Kim, Hojong Jun, Min-Jae Kim, Eun Jeong Won, Eun-Taek Han, Eun-Hee Shin, Jong-Yil Chai
The Korean Journal of Parasitology.2021; 59(1): 83. CrossRef
Molecular data reshape our understanding of the life cycles of three digeneans (Monorchiidae and Gymnophallidae) infecting the bivalve, Donax variabilis: it’s just a facultative host!
Kristina M. Hill-Spanik, Claudia Sams, Vincent A. Connors, Tessa Bricker, Isaure de Buron
Parasite.2021; 28: 34. CrossRef
Morphological and Molecular Confirmation of Parvatrema duboisi Metacercariae in the Manila Clam Ruditapes philippinarum from Gochang-gun, Korea
Taehee Chang, Bong-Kwang Jung, Hyejoo Shin, Sooji Hong, Jeonggyu Lee, Deok-Gyu Kim, Laddawan Patarwut, Woon-Mok Sohn, Jong-Yil Chai
The Korean Journal of Parasitology.2020; 58(1): 87. CrossRef
Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
Woon-Mok Sohn, Byoung-Kuk Na
The Korean Journal of Parasitology.2019; 57(3): 273. CrossRef
Fossils of parasites: what can the fossil record tell us about the evolution of parasitism?
Tommy L. F. Leung
Biological Reviews.2017; 92(1): 410. CrossRef
New Record of Schistorophus cirripedesmi (Nematoda: Acuariidae) from a Bar-Tailed Godwit, Limosa lapponica baueri (Charadriformes: Scolopacidae) in Korea
Seongjun Choe, Hyun Kim, Junsik Lim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Heejong Kim, Youngjun Kim, Keeseon S. Eom
The Korean Journal of Parasitology.2016; 54(3): 349. CrossRef
Seasonality and host–parasite interrelationship of Mytilus galloprovincialis parasites in Turkish Black Sea coasts
Ahmet Özer, Sevilay Güneydağ
Journal of the Marine Biological Association of the United Kingdom.2015; 95(8): 1591. CrossRef
First report of Urosporidium sp., a haplosporidian hyperparasite infecting digenean trematode Parvatrema duboisi in Manila clam, Ruditapes philippinarum on the west coast of Korea
Thanh Cuong Le, Hyun-Sil Kang, Hyun-Ki Hong, Kwang-Jae Park, Kwang-Sik Choi
Journal of Invertebrate Pathology.2015; 130: 141. CrossRef
Discovery ofMaritrema obstipum(Digenea: Microphallidae) from Migratory Birds in Korea
Ok-Sik Chung, Woon-Mok Sohn, Jong-Yil Chai, Min Seo, Hye-Jung Lee
The Korean Journal of Parasitology.2011; 49(4): 457. CrossRef