Parasites, Hosts and Diseases

"Dongmin Lee"

Original Articles

Genotypes of Echinococcus Species from Cattle in Tanzania: Mohammed Mebarek Bia, Seongjun Choe, Barakaeli Abdieli Ndosi, Hansol Park, Yeseul Kang, Chatanun Eamudomkarn, Tilak Chandra Nath, Sunmin Kim, Hyeong-Kyu Jeon, Dongmin Lee, Keeseon S. Eom; Korean J Parasitol 2021;59(5):457-464.
Published online October 22, 2021; DOI: https://doi.org/10.3347/kjp.2021.59.5.457

Cystic echinococcosis is a zoonotic parasitic disease caused by Echinococcus species. Tanzania is one of the endemic countries with cystic echinococcosis. This study focussed on identifying genotypes of Echinococcus spp. in Tanzania. We collected 7 cysts from cattle in Mwanza municipal (n=4) and Loliondo district (n=3). The cysts from Mwanza were all E. ortleppi and fertile. In contrast, the cysts from Loliondo were all E. granulosus sensu stricto and sterile. Two from the 4 cysts were a new haplotype of E. ortleppi (G5). These results can improve the preventive and control programs for humans and livestock in Tanzania. To our knowledge, this study is considered the first to identify the genotype and haplotype of Echinococcus spp. in Tanzania.

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Occurrence of Echinococcus felidis in Apex Predators and Warthogs in Tanzania: First Molecular Evidence of Leopards as a New, Definitive Host and Implications for Ecosystem Health
Barakaeli Abdieli Ndossi, Eblate Ernest Mjingo, Mary Wokusima Zebedayo, Seongjun Choe, Hansol Park, Lee Dongmin, Keeseon S. Eom, Mohammed Mebarek Bia
Pathogens.2025; 14(5): 443. CrossRef

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Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species: Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2021;59(2):139-148.
Published online April 22, 2021; DOI: https://doi.org/10.3347/kjp.2021.59.2.139

Abstract
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This study was carried out to provide information on the taxonomic classification and analysis of mitochondrial genomes of Spirometra theileri. One strobila of S. theileri was collected from the intestine of an African leopard (Panthera pardus) in the Maswa Game Reserve, Tanzania. The complete mtDNA sequence of S. theileri was 13,685 bp encoding 36 genes including 12 protein genes, 22 tRNAs and 2 rRNAs with absence of atp8. Divergences of 12 protein-coding genes were as follow: 14.9% between S. theileri and S. erinaceieuropaei, 14.7% between S. theileri and S. decipiens, and 14.5% between S. theileri with S. ranarum. Divergences of 12 proteins of S. theileri and S. erinaceieuropaei ranged from 2.3% in cox1 to 15.7% in nad5, while S. theileri varied from S. decipiens and S. ranarum by 1.3% in cox1 to 15.7% in nad3. Phylogenetic relationship of S. theileri with eucestodes inferred using the maximum likelihood and Bayesian inferences exhibited identical tree topologies. A clade composed of S. decipiens and S. ranarum formed a sister species to S. erinaceieuropaei, and S. theileri formed a sister species to all species in this clade. Within the diphyllobothridean clade, Dibothriocephalus, Diphyllobothrium and Spirometra formed a monophyletic group, and sister genera were well supported.

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Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
Roman Kuchta, Anna J. Phillips, Tomáš Scholz
International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947. CrossRef

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Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania: Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2020;58(6):653-660.
Published online December 29, 2020; DOI: https://doi.org/10.3347/kjp.2020.58.6.653

Abstract
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Spirometra tapeworms (Cestoda: Diphyllobothriidae) collected from carnivorous mammals in Tanzania were identified by the DNA sequence analysis of the mitochondrial cytochrome c oxidase subunit 1 (cox1) and internal transcribed spacer 1 (ITS1), and by morphological characteristics. A total of 15 adult worms were collected from stool samples and carcasses of Panthera leo, Panthera pardus, and Crocuta crocuta in the Serengeti and Selous ecosystems of Tanzania. Three Spirometra species: S. theileri, S. ranarum and S. erinaceieuropaei were identified based on morphological features. Partial cox1 sequences (400 bp) of 10 specimens were revealed. Eight specimens showed 99.5% similarity with Spirometra theileri (MK955901), 1 specimen showed 99.5% similarity with the Korean S. erinaceieuropaei and 1 specimen had 99.5% similarity with Myanmar S. ranarum. Sequence homology estimates for the ITS1 region of S. theileri were 89.8% with S. erinaceieuropaei, 82.5% with S. decipiens, and 78.3% with S. ranarum; and 94.4% homology was observed between S. decipiens and S. ranarum. Phylogenetic analyses were performed with 4 species of Spirometra and 2 species of Dibothriocephalus (=Diphyllobothrium). By both ML and BI methods, cox1 and ITS1 gave well supported, congruent trees topology of S. erinaceieuropaei and S. theileri with S. decipiens and S. ranarum forming a clade. The Dibothriocephalus species were sisters of each other and collectively forming successive outgroups. Our findings confirmed that 3 Spirometra species (S. theileri, S. ranarum, and S. erinaceieuropaei) are distributed in the Serengeti and Selous ecosystems of Tanzania.

Citations

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Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150. CrossRef
Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
Parasitology International.2024; 98: 102798. CrossRef
Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
Acta Parasitologica.2024; 69(1): 574. CrossRef
Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
Roman Kuchta, Anna J. Phillips, Tomáš Scholz
International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947. CrossRef
Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
The Korean Journal of Parasitology.2021; 59(2): 139. CrossRef

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Case Report

First Infestation Case of Sarcoptic Mange from a Pet Rabbit Oryctolagus cuniculus in Republic of Korea: Seongjun Choe, Sungryong Kim, Ki-Jeong Na, Tilak Chandra Nath, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Dongmin Lee, Hansol Park, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2020;58(3):315-319.
Published online June 26, 2020; DOI: https://doi.org/10.3347/kjp.2020.58.3.315

Abstract
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In November 2019 a 5-month-old mixed-breed rabbit presented to Chungbuk National University Veterinary Teaching Hospital, Cheongju-si, Chungbuk, Republic of Korea (Korea) with symptoms comprising pruritus, crusts on skin, poor appetite and reduced defecation. The rabbit was purchased 2 months prior from a pet shop located in a big market, and that the symptoms were first observed about 2 weeks prior to the hospital visit. Physical examination revealed that the patient had crust formation and alopecia on the nose together with lesions on the digits. A skin scraping test was performed using mineral oil and a high density of mites was observed by microscopy. Each mite showed a round, tortoise-like body with 4 comparatively short pairs of legs. The anus was located at the terminal unlike with suspected pathogen, Notoedres cati. Based on morphological characteristics, we identified the mite as Sarcoptes sp. Ivermectin was administered weekly by subcutaneous injection at a dosage of 0.4 mg/kg, and 4 weeks of follow-up study revealed the patient was fully recovered. And no more mites were detected from the case. This is the first case report of sarcoptic mange in a pet rabbit in Korea.

Citations

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Genetic and Serological Survey of Sarcoptic Mange (Sarcoptes scabiei) in Wild Boars (Sus scrofa) in South Korea
Sanghyun Lee, Garam Kim, So-Jeong Kim, Weon-Hwa Jheong, Dong-Hyuk Jeong
Animals.2024; 14(23): 3490. CrossRef
Zoonotic Episodes of Scabies: A Global Overview
Barbara Moroni, Luca Rossi, Charlotte Bernigaud, Jacques Guillot
Pathogens.2022; 11(2): 213. CrossRef
Mange in Rabbits: An Ectoparasitic Disease with a Zoonotic Potential
Wafaa A. Abd El-Ghany, Remo Lobetti
Veterinary Medicine International.2022; 2022: 1. CrossRef

10,347 View
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3 Web of Science
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Original Articles

Echinostoma macrorchis Metacercariae in Cipangopaludina chinensis malleata from Xiengkhuang Province, Lao PDR and Morphologies of Adults from Experimental Animals: Woon-Mok Sohn, Byoung-Kuk Na, Dongmin Lee, Keeseon S. Eom, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min; Korean J Parasitol 2019;57(6):657-664.
Published online December 31, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.6.657

Abstract
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We identified the echinostome metacercariae in Chinese mystery snails, Cipangopaludina chinensis malleata, from Xiengkhuang Province, Lao PDR with morphologies of adult worms recovered. Total 20 snails were examined with artificial digestion method and then the collected metacercariae were orally infected to a mouse and a rat. Adult worms recovered from experimental animals were observed with a light microscope and a SEM. The metacercariae were round, 125×123 ?m in average size, with a moderately thick cyst wall, collar spines distributed in the head collar and excretory granules in 2 canals of excretory tube. Adult flukes (3-week-old in a rat) were elongated, ventrally curved and 5.310×1.023 mm in average size. Head collar distinct, bearing 43 collar spines with 5 end group ones on each side. Oral sucker subterminal, prepharynx very short, pharynx well developed, and esophagus relatively short. Cirrus sac well developed, with a saccular seminal vesicle, and ventral sucker very large. Ovary round and on the median line of the body. Testes tandom and elongated. Eggs operculated, elliptical and 90×57 ?m in average size. In the SEM observation, the head crown prominent, with 43 collar spines resembled with horns of younger stag. Scale-like tegumental spines were densely distributed on the surface between the head collar and ventral sucker, and their densities were decreased posteriorly. Conclusively, the metacercariae detected in C. chinensis malleata from Lao PDR were identified as those of Echinostoma macrorchis based on the morphological characteristics of adult worms.

Citations

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Development of a duplex loop-mediated isothermal amplification together with lateral flow dipstick assay for the detection and discrimination of parasitic infections in chickens between cestodes belonging to genus Raillietina and trematodes in family Echi
Wasin Panich, Thanawan Tejangkura, Thapana Chontananarth
Research in Veterinary Science.2025; 185: 105539. CrossRef
The Nuclear Ribosomal Transcription Units of Two Echinostomes and Their Taxonomic Implications for the Family Echinostomatidae
Yu Cao, Ye Li, Zhong-Yan Gao, Bo-Tao Jiang
Biology.2025; 14(8): 1101. CrossRef
Development and utilization of a visual loop-mediated isothermal amplification coupled with a lateral flow dipstick (LAMP-LFD) assay for rapid detection of Echinostomatidae metacercaria in edible snail samples
Wasin Panich, Phonkawin Jaruboonyakorn, Awika Raksaman, Thanawan Tejangkura, Thapana Chontananarth
International Journal of Food Microbiology.2024; 418: 110732. CrossRef
High diversity of trematode metacercariae that parasitize freshwater gastropods in Bangkok, Thailand, and their infective situations, morphologies and phylogenetic relationships
Pichit Wiroonpan, Thapana Chontananarth, Jong-Yil Chai, Watchariya Purivirojkul
Parasitology.2022; 149(7): 913. CrossRef
Unravelling another mystery: Parasite escape and host‐switching vary spatially in non‐indigenous populations of Japanese mystery snails
Amy E. Fowler, Grace A. Loonam, April M. H. Blakeslee
Freshwater Biology.2022; 67(8): 1316. CrossRef
Snail-borne zoonotic trematodes in edible viviparid snails obtained from wet markets in Northern Thailand
K. Chantima, C. Rika
Journal of Helminthology.2020;[Epub] CrossRef

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Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania: Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Barakaeli Abdieli Ndosi, Tilak Chandra Nath, Chatanun Eamudomkarn, Julius Keyyu, Robert Fyumagwa, Simon Mduma, Hyeong-Kyu Jeon; Korean J Parasitol 2019;57(6):639-645.
Published online December 31, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.6.639

Abstract
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In the present study, a Spirometra species of Tanzania origin obtained from an African leopard (Panthera pardus) and spotted hyena (Crocuta crocuta) was identified based on molecular analysis of cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit I (nad1) as well as by morphological observations of an adult tapeworm. One strobila and several segments of a Spirometra species were obtained from the intestine of an African male leopard (Panthera pardus) and spotted hyena (Crocuta Crocuta) in the Maswa Game Reserve of Tanzania. The morphological characteristics of S. theileri observed comprised 3 uterine loops on one side and 4 on the other side of the mid-line, a uterine pore situated posterior to the vagina and alternating irregularly either to the right or left of the latter, and vesicular seminis that were much smaller than other Spirometra species. Sequence differences in the cox1 and nad1 genes between S. theileri (Tanzania origin) and S. erinaceieuropaei were 10.1% (cox1) and 12.0% (nad1), while those of S. decipiens and S. ranarum were 9.6%, 9.8% (cox1) and 13.0%, 12.6% (nad1), respectively. The morphological features of the Tanzania-origin Spirometra specimens coincided with those of S. theileri, and the molecular data was also consistent with that of S. theileri, thereby demonstrating the distribution of S. theileri in Tanzania. This places the leopard (Panthera pardus) and spotted hyena (Crocuta Crocuta) as new definitive hosts of this spirometrid tapeworm.

Citations

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Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150. CrossRef
Deciphering the global genetic structure of Spirometra mansoni and S. erinaceieuropaei based on 28S ribosomal RNA: Insights into taxonomical revaluation and population dynamics
Anil Kumar Nehra, Rasmita Panda, Prem Sagar Maurya, Ansu Kumari, Aman Dev Moudgil
Parasitology Research.2025;[Epub] CrossRef
Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
Parasitology International.2024; 98: 102798. CrossRef
Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
Acta Parasitologica.2024; 69(1): 574. CrossRef
Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
Roman Kuchta, Anna J. Phillips, Tomáš Scholz
International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947. CrossRef
Cystic echinococcosis in donkeys in eastern Africa
Erastus Mulinge, Eberhard Zeyhle, Cecilia Mbae, Lucy Gitau, Timothy Kaburu, Japhet Magambo, Ute Mackenstedt, Thomas Romig, Peter Kern, Marion Wassermann
Parasitology.2023; 150(5): 468. CrossRef
Evidence of Toxocara Eggs in Pachycrocuta brevirostris (Gervais, 1850) Coprolites from the Pleistocene of Taurida Cave (Crimea)
T. N. Sivkova, D. R. Khantemirov, D. O. Gimranov, A. V. Lavrov, A. V. Kochnev
Doklady Biological Sciences.2022; 504(1): 82. CrossRef
Morphometrical and Molecular Characterization of Oesophagostomum columbianum (Chabertiidae: Oesophagostominae) and Haemonchus contortus (Trichostrongylidae: Haemonchinae) Isolated from Goat (Capra hircus) in Sylhet, Bangladesh
Tilak Chandra Nath, Dongmin Lee, Hansol Park, Seongjun Choe, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Uday Kumar Mohanta, Kazi Mehetazul Islam, Jamal Uddin Bhuiyan, Hyeong-Kyu Jeon, Keeseon S. Eom, José F. Silveira
Journal of Parasitology Research.2021; 2021: 1. CrossRef
Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
The Korean Journal of Parasitology.2021; 59(2): 139. CrossRef
A survey of intestinal helminths in domestic dogs in a human–animal–environmental interface: the Oloisukut Conservancy, Narok County, Kenya
E. Mulinge, E. Zeyhle, J. Mpario, M. Mugo, L. Nungari, B. Ngugi, B. Sankale, P. Gathura, J. Magambo, M. Kachani
Journal of Helminthology.2021;[Epub] CrossRef
African Lions and Zoonotic Diseases: Implications for Commercial Lion Farms in South Africa
Jennah Green, Catherine Jakins, Eyob Asfaw, Nicholas Bruschi, Abbie Parker, Louise de Waal, Neil D’Cruze
Animals.2020; 10(9): 1692. CrossRef
Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
The Korean Journal of Parasitology.2020; 58(5): 577. CrossRef
Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
The Korean Journal of Parasitology.2020; 58(6): 653. CrossRef

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Case Report

A Clonorchiasis Case of a Leopard Cat, Prionailurus bengalensis euptilurus, Diagnosed by Ultrasonography and Egg Detection in Republic of Korea: Seongjun Choe, Dong-Hyuk Jeong, Jeong-Jin Yang, Jeongho Kim, Ki-Jeong Na, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2019;57(3):299-302.
Published online June 30, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.3.299

Abstract
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A clonorchiasis case in a captive leopard cat, Prionailurus bengalensis euptilurus, was confirmed by ultrasonographic findings and egg morphologies found in the bile juice sample in the Korea. The leopard cat was introduced from the wild habitat of Gyeongsangnam-do, to Cheongju Zoo in Cheongju-si, Chungcheongbuk-do, Korea in August 2014. Physical examinations were basically performed for quarantine and check-up health. The cat was comparatively good in health except anorexia. The cyst-like bile duct dilation and the increased echogenicity of gall bladder wall and hepatic parenchyma were observed by ultrasonography. Ultrasound-guided needle biopsy was conducted for collecting bile juice and the specimens were observed under light microscope. The numerous small trematode eggs were detected in the bile juice sample of the light microscopy. The eggs were 25-33 (28±3) μm by 18-22 (20±1) μm in size and showed typical characteristics of Clonorchis sinensis egg, i.e., a dominantly developed operculum, shoulder rim and dust-like wrinkles in surface. To treat the liver fluke infection, 20 mg/kg of praziquantel was orally administered only once to the case. Follow-up studies including fecal examinations were conducted during 2 years after treatment. But no more eggs were detected from the case. In the present study, we described the first clonorchiasis case of leopard cat, which was confirmed by ultrasonographic findings and egg morphologies from the bile juice sample in Korea.

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Jun Ho Choi, Singeun Oh, Myung-hee Yi, Dongjun Kang, Du-Yeol Choi, Xavier Chavarria, Arwa Shatta, Yoon Hee Cho, Seongjun Choe, Seung-Hun Lee, Ju Yeong Kim
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Metabarcoding of pathogenic parasites based on copro-DNA analysis of wild animals in South Korea
Jun Ho Choi, Soo Lim Kim, Dong Kyun Yoo, Myung-hee Yi, Singeun Oh, Myungjun Kim, Sohyeon Yun, Tai-Soon Yong, Seongjun Choe, Jong Koo Lee, Ju Yeong Kim
Heliyon.2024; 10(9): e30059. CrossRef
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Shin-Ichi Nakamura, Kiyokazu Ozaki, Chisa Minoura, Takamitsu Tsukahara
Journal of Comparative Pathology.2023; 204: 11. CrossRef
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Min-Gyeong Seo, Kook-Young Han, Sang-Hyun Kim, Chang Keun Kang, Jong-Hyun Kim, Il-Hwa Hong
Journal of Veterinary Science.2023;[Epub] CrossRef
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Won Gi Yoo, Woon-Mok Sohn, Byoung-Kuk Na
Parasitology.2022; 149(10): 1296. CrossRef

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Brief Communications

Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom; Korean J Parasitol 2019;57(1):55-60.
Published online February 26, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.1.55

Abstract
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This study was undertaken to determine the complete mitochondrial DNA sequence and structure of the mitochondrial genome of Spirometra ranarum, and to compare it with those of S. erinaceieuropaei and S. decipiens. The aim of this study was to provide information of the species level taxonomy of Spirometra spp. using the mitochondrial genomes of 3 Spirometra tapeworms. The S. ranarum isolate originated from Myanmar. The mitochondrial genome sequence of S. ranarum was compared with that of S. erinaceieuropaei (GenBank no. KJ599680) and S. decipiens (GenBank no. KJ599679). The complete mtDNA sequence of S. ranarum comprised 13,644 bp. The S. ranarum mt genome contained 36 genes comprising 12 protein-coding genes, 22 tRNAs and 2 rRNAs. The mt genome lacked the atp8 gene, as found for other cestodes. All genes in the S. ranarum mitochondrial genome are transcribed in the same direction and arranged in the same relative position with respect to gene loci as found for S. erinaceieuropaei and S. decipiens mt genomes. The overall nucleotide sequence divergence of 12 protein-coding genes between S. ranarum and S. decipiens differed by 1.5%, and 100% sequence similarity was found in the cox2 and nad6 genes, while the DNA sequence divergence of the cox1, nad1, and nad4 genes of S. ranarum and S. decipiens was 2.2%, 2.1%, and 2.6%, respectively.

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Molecular identification of sparganum of Spirometra mansoni isolated from the abdominal cavity of a domestic cat in Vietnam
Yen Thi Hoang NGUYEN, Lan Anh Thi NGUYEN, Hieu VAN DONG, Hieu Duc DUONG, Ayako YOSHIDA
Journal of Veterinary Medical Science.2024; 86(1): 96. CrossRef
Spirometra species from Asia: Genetic diversity and taxonomic challenges
Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
Parasitology International.2021; 80: 102181. CrossRef
Insight into One Health Approach: Endoparasite Infections in Captive Wildlife in Bangladesh
Tilak Chandra Nath, Keeseon S. Eom, Seongjun Choe, Shahadat Hm, Saiful Islam, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Sunmin Kim, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee
Pathogens.2021; 10(2): 250. CrossRef
Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
The Korean Journal of Parasitology.2021; 59(2): 139. CrossRef
Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
Infection, Genetics and Evolution.2020; 85: 104466. CrossRef

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Infections with Digenean Trematode Metacercariae in Two Invasive Alien Fish, Micropterus salmoides and Lepomis macrochirus, in Two Rivers in Chungcheongbuk-do, Republic of Korea: Seongjun Choe, Hansol Park, Dongmin Lee, Yeseul Kang, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2018;56(5):509-513.
Published online October 31, 2018; DOI: https://doi.org/10.3347/kjp.2018.56.5.509

Abstract
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Present study was performed to survey infection status of digenetic trematode metacercariae in 2 alien fish species, Micropterus salmoides (largemouth bass) and Lepomis macrochirus (bluegill), in 2 rivers draining Chungcheongbuk-do, Republic of Korea. A total of 107 largemouth bass and 244 bluegills were caught in Daecheong-ho (ho=lake) and Musim-cheon (a branch of Geum-gang), in Chungcheongbuk-do April-July 2015. Additionally, 68 native fish of 5 species, i.e., Zacco platypus, Hemibarbus longirostris, Carassius auratus, Pseudogobio esocinus and Puntungia herzi, were caught from the same water bodies. All of the fish collected were examined by artificial digestion method. The metacercariae of Centrocestus armatus, Clinostomum complanatum, Metagonimus sp. and Diplostomum spp. were detected from 4 out of 5 native fish species in Daecheong-ho. However, any metacercariae were not found from 87 M. salmoides and 177 L. macrochirus in Daecheong-ho. In Musim-cheon, metacercariae of Exorchis oviformis and Metacercaria hasegawai were detected from 78% Z. platypus and 34% L. macrochirus, but any metacercariae not found in M. salmoides. We report here that the 2 alien fish species were less infected with the metacercariae than the native ones. Surveys on the metacercariae in the alien fish species in geographically various rivers should be undertaken for better understanding on the role of alien fish species in the trematode infections in Republic of Korea.

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Woon-Mok Sohn
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Tae-Sik Yu, Chang Woo Ji, Young-Seuk Park, Kyeong-Ho Han, Ihn-Sil Kwak
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Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Cheon-Hyeon Kim, Min-Ah Hwang, Kyeong-Woo No, Jai-Dong Kim
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Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Jung-Won Ju
The Korean Journal of Parasitology.2019; 57(2): 145. CrossRef

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Molecular and Morphologic Identification of Spirometra ranarum Found in the Stool of African Lion, Panthera leo in the Serengeti Plain of Tanzania: Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Julius Keyyu, Robert Fyumagwa, Hyeong-Kyu Jeon; Korean J Parasitol 2018;56(4):379-383.
Published online August 31, 2018; DOI: https://doi.org/10.3347/kjp.2018.56.4.379

Abstract
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The present study was performed with morphological and molecular analysis (cox1 and nad1 mitochondrial genes) to identify the proglottids of spirometrid tapeworm found in the stool of an African lion, Panthera leo, in the Serengeti plain of Tanzania. A strand of tapeworm strobila, about 75 cm in length, was obtained in the stool of a male African lion in the Serengeti National Park (34˚ 50’ E, 02˚ 30’ S), Tanzania, in February 2012. The morphological features of the adult worm examined exhibited 3 uterine coils with a bow tie appearance and adopted a diagonal direction in the second turn. The posterior uterine coils are larger than terminal uterine ball and the feature of uteri are swirling rather than spirally coiling. The sequence difference between the Spirometra species (Tanzania origin) and S. erinaceieuropaei (GenBank no. KJ599680) was 9.4% while those of S. decipiens (GenBank no. KJ599679) differed by 2.1% in the cox1 and nad1 genes. Phylogenetic tree topologies generated using the 2 analytic methods were identical and presented high level of confidence values for the 3 major branches of the 3 Spirometra species in the cox1 gene. The morphological and molecular findings obtained in this study were nearly coincided with those of S. ranarum. Therefore, we can know for the first time that the African lion, Panthera leo, is to the definitive host of this tapeworm.

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Roman Kuchta, Anna J. Phillips, Tomáš Scholz
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Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
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The Korean Journal of Parasitology.2020; 58(6): 653. CrossRef
Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom
The Korean Journal of Parasitology.2019; 57(1): 55. CrossRef
Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania
Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Barakaeli Abdieli Ndosi, Tilak Chandra Nath, Chatanun Eamudomkarn, Julius Keyyu, Robert Fyumagwa, Simon Mduma, Hyeong-Kyu Jeon
The Korean Journal of Parasitology.2019; 57(6): 639. CrossRef

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Original Article

Genetic and Morphologic Identification of Spirometra ranarum in Myanmar: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Woon-Mok Sohn, Sung-Jong Hong, Jong-Yil Chai, Keeseon S. Eom; Korean J Parasitol 2018;56(3):275-280.
Published online June 30, 2018; DOI: https://doi.org/10.3347/kjp.2018.56.3.275

Abstract
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In the present study, we identified a Spirometra species of Myanmar origin (plerocercoid) by molecular analysis using mitochondrial cox1 and nad1 genes, as well as by morphological observations of an adult tapeworm. Spargana specimens were collected from a paddy-field in Taik Kyi Township Tarkwa Village, Yangon, Myanmar in December 2017. A total of 5 spargana were obtained from 20 frogs Hoplobatrachus rugulosus; syn: Rana rugulosa (Wiegmann, 1834) or R. tigrina (Steindachner, 1867). The plerocercoids were used for experimental infection of a dog. After 4 weeks of infection, an adult tapeworm was recovered from the intestine of the dog. Morphologically, the distinct features of Spirometra sp. (Myanmar origin) relative to S. erinaceieuropaei and S. decipiens include a uterine morphology comprising posterior uterine coils that larger than the terminal uterine ball and coiling of the uteri diagonally (swirling) rather than spirally. The cox1 sequences (1,566 bp) of the Myanmar-origin Spirometra species showed 97.9% similarity to a reference sequence of S. decipiens (GenBank no. KJ599679) and 90.5% similarity to a reference sequence of S. erinaceieuropaei (GenBank no. KJ599680). Phylogenetic tree topologies were identical and presented high confidence level of values for the 3 major branches of the 3 Spirometra species in cox1 and nad1 genes. These results indicated that Myanmar-origin Spirometra species coincided with those of S. ranarum and may be considered as a valid species.

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Brief Communications

Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom; Korean J Parasitol 2018;56(1):87-91.
Published online February 28, 2018; DOI: https://doi.org/10.3347/kjp.2018.56.1.87

Abstract
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Morphological and molecular characteristics of spirometrid tapeworms, Spirometra decipiens, were studied, which were recovered from a heavily infected stray cat road-killed in Eumseong-gun, Chungcheongbuk-do (Province), the Republic of Korea (=Korea). A total of 134 scolices and many broken immature and mature proglottids of Spirometra tapeworms were collected from the small intestine of the cat. Morphological observations were based on 116 specimens. The scolex was 22.8-32.6 mm (27.4 mm in average) in length and small spoon-shape with 2 distinct bothria. The uterus was coiled 3-4 times, the end of the uterus was ball-shaped, and the vaginal aperture shaped as a crescent moon was closer to the cirrus aperture than to the uterine aperture. PCR amplification and direct sequencing of the cox1 target fragment (377 bp in length and corresponding to positions 769-1,146 bp of the cox1 gene) were performed using total genomic DNA extracted from 134 specimens. The cox1 sequences (377 bp) of the specimens showed 99.0% similarity to the reference sequence of S. decipiens and 89.3% similarity to the reference sequence of S. erinaceieuropaei. In the present study, we report a stray cat heavily infected with S. decipiens identified by mitochondrial cox1 sequence analysis and morphological examinations of the adult worms.

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Sooji Hong, Hyejoo Shin, Seungwan Ryoo, Chung-Won Lee, Jae-Young Park, Jong-Yil Chai, Bong-Kwang Jung
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Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
Acta Parasitologica.2024; 69(1): 574. CrossRef
Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
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The global prevalence of Spirometra parasites in snakes, frogs, dogs, and cats: A systematic review and meta‐analysis
Milad Badri, Meysam Olfatifar, Amir KarimiPourSaryazdi, Leila Zaki, Luis Manuel Madeira de Carvalho, Majid Fasihi Harandi, Fatemeh Barikbin, Parisa Madani, Aida Vafae Eslahi
Veterinary Medicine and Science.2022; 8(6): 2785. CrossRef
First Clinical Cases of Spirometrosis in Two Cats in Korea
Joohyung Kim, Younsung Ock, Kihwan Yang, Seongjun Choe, Kyung-Mee Park, Wan-Kyu Lee, Kyung-Chul Choi, Soochong Kim, Dongmi Kwak, Seung-Hun Lee
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Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
Infection, Genetics and Evolution.2020; 85: 104466. CrossRef
Molecular Genetic Findings of Spirometra decipiens and S. ranarum in Korea
Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
The Korean Journal of Parasitology.2018; 56(4): 359. CrossRef

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New Record of Aspidogaster ijimai Kawamura, 1913 (Trematoda: Aspidogastridae) from Cyprinus carpio in Korea: Dongmin Lee, Hansol Park, Seongjun Choe, Yeseul Kang, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2017;55(5):575-578.
Published online October 31, 2017; DOI: https://doi.org/10.3347/kjp.2017.55.5.575

Abstract
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Aspidogastrid trematodes (Subclass Aspidogastrea) are a relatively small group with a characteristic adhesive disc and parasitize in a variety of cold-blooded hosts. Until now, only 2 species in the genus Cotylaspis, i.e., C. coreensis and C. sinensis, have been reported as the aspidogastrid trematode in the Republic of Korea (=Korea). In the present study, we intended to describe a species of aspidogastrids collected from the small intestine of the common carp, Cyprinus carpio, in a faunistic point of view. Total 51 specimens were collected from a carp caught in Nakdong-gang (River) on May 2015. Some of them were prepared as the specimens for light microscopic observations, and some others were prepared for SEM. They were slightly elongated without head lobes, 2,432×840 μm in average size, and had characteristic adhesive discs with 4 rows and 46 alveoli in average. The ovary was reniform and was located in the posterior-upper part of the body. The single testis was larger than the ovary and was located below the ovary. The uterus was coiled containing numerous eggs and distributed in the posterior 2/3 of the body. The vitellaria were follicular, and distributed from the mid-level of testis to near the posterior end. The morphological characters with dimensions of our specimens were closely identical with those of Aspidogaster ijimai previously described. A new aspidogastrid is added among the Korean trematode fauna by the present study.

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S.G. Sokolov, D.M. Atopkin, M. Urabe
Parasitology International.2019; 71: 167. CrossRef

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Case Reports

Canine Wound Myiasis Caused by Lucilia sericata (Diptera: Calliphoridae) in Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Hakhyun Kim, Ji-Houn Kang, Cha-Ho Jee, Keeseon S. Eom; Korean J Parasitol 2016;54(5):667-671.
Published online October 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.5.667

Abstract
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Myiasis is a relatively common infection of animals kept as pets, although only 1 case of canine myiasis has been described so far in the Republic of Korea. In the present study, we report an additional case of canine wound myiasis with identification of its causative agent, Lucilia sericata. An 8-year-old male Siberian husky dog was referred with anorexia, vomiting, and diarrhea to the Chungbuk National University Veterinary Medical Center, Cheongju-si (city), Chungcheongbuk-do (province), Korea in July 2013. Physical examination indicated the patient had a deep wound filled with a maggot swarm as a left gluteal lesion. A total of 216 maggots were removed by forceps, and the wounded area was sponged with gauzes and disinfected with 70% alcohol and a povidone-iodine solution. After daily care and suturing the wound, the patient was discharged at day 19 after admission. Recovered worms possessed morphological characteristics similar to those of L. sericata, namely, a sub-cylindrical body with 6-8 lobed anterior spiracles, round shaped with a button surrounded by a peritremal ring with no gaps, and similar distances between dorsal, median, and outer papillae of the 12th segment. Additionally, cox1 partial sequences (528 bp) obtained in the present study showed 100% identity with those of L. sericata (GenBank no. KT272854.1). L. sericata is indicated as a pathogen of myiasis infection not only in humans, but also in animals kept as pets in Korea.

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Marco Pezzi, Chiara Scapoli, Milvia Chicca, Marilena Leis, Maria Gabriella Marchetti, Carlo Nicola Francesco Del Zingaro, Chiara Beatrice Vicentini, Elisabetta Mamolini, Annunziata Giangaspero, Teresa Bonacci
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A Case of Chaunocephalosis by Chaunocephalus ferox (Digenea: Echinostomatidae) in an Oriental White Stork, Ciconia boyciana, in Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, Shi-Ryong Park, Keeseon S. Eom; Korean J Parasitol 2016;54(5):659-665.
Published online October 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.5.659

Abstract
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We intended to describe a case of chaunocephalosis and morphological characteristics of its causative agent, Chaunocephalus ferox, recovered from an oriental white stork, Ciconia boyciana, in the Republic of Korea. An oriental white stork was referred to the Wildlife Center of Chungbuk in Korea in February 2014 for severe depression with cachexia and it died the next day. At necropsy, the stomach was severely expanded and 7 thick-walled nodules were observed in the upper part of the intestine. Although the stomach was filled with full of foreign materials, the intestine was almost empty. The nodules were globular and total 9 flukes were recovered. They were 8,030-8,091 μm in length and 3,318-3,333 μm in maximum width. Because the flukes had bulbous forebody with short narrow subcylindrical hindbody, 27 collar spines, and vitelline follicles not reaching to the posterior end, the specimens were identified as being C. ferox. The cyst formation induced thickening of the intestinal wall with narrowing of the lumen that could have contributed to the gastric impaction to the death of the host. This is the first described case of chaunocephalosis and its causative agent C. ferox found from an oriental white stork in Korea.

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Chaunocephalus ferox (Digenea: Echinostomatidae): a potential threat to the health of Oriental stork (Ciconia boyciana)
Mengchao Zhou, Mingyuan Yu, Mengqiu Liu, Hongrui Liang, Mengru Zhao, Yaxian Lu, Siyuan Qin, Xiaotian Zhang, Hongyan Yu, Hang Tian, Wanting Li, Feiluran Maimaiti, Weiyan Yin, Lei Han, Lihong Tian, Yu Xu, Zhijun Hou
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Complete mitochondrial genome and phylogenetic implications of Chaunocephalus ferox (Digenea: Echinostomatidae), a critical pathogen for Oriental Stork conservation
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International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101129. CrossRef
Morphological and Molecular Study on Trematodes of Storks (Ciconia ciconia and C. nigra) from Turkey
Mehmet Öztürk, Şinasi Umur
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Retrospective Analysis of Postmortem Findings in Oriental Stork (Ciconia boyciana) from Korea (2019-2023)
Byungkwan Oh, Myeon-Sik Yang, Dong-Soo Ha, Su-Kyung Kim, Hyun Jong Park, Bumseok Kim, Chae Woong Lim, Sang-Ik Oh
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A case of nodular enteritis due to Chaunocephalus ferox in a white stork (Ciconia ciconia) in Bulgaria
P. T. Iliev, K. Dimitrov, A. Ivanov
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M. Gonzálvez, C. Muñoz-Hernández, A. Gómez de Ramón, A. Buendía, F. Escribano, C. Martínez-Carrasco
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Woon-Mok Sohn, Byoung-Kuk Na
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Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
The Korean Journal of Parasitology.2019; 57(6): 647. CrossRef
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
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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Original Articles

Catenotaenia dendritica (Cestoda: Catenotaeniidae) and Three Ectoparasite Species in the Red Squirrel, Sciurus vulgaris, from Cheongju, Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, In-Yong Lee, Keeseon S. Eom; Korean J Parasitol 2016;54(4):509-518.
Published online August 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.4.509

Abstract
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Parasites are recorded from the red squirrel, Sciurus vulgaris, from Cheongju, the Republic of Korea. A total of 5 road-killed squirrels were thoroughly examined for internal and external parasites from November 2011 to May 2014. Total 4 parasite species, including 1 tapeworm and 3 ectoparasite species were recovered. They were morphologically identified as Catenotaenia dendritica (Cestoda: Catenotaeniidae), Hirstionyssus sciurinus, Leptotrombidium pallidum, and Ceratophyllus (Monopsyllus) indages. Among them, C. dendritica and H. sciurinus are recorded for the first time in the Korean parasite fauna. In addition, the possibility that the red squirrel could act as a reservoir host for a zoonotic disease like tsutsugamushi disease with L. pallidum as its vector has been raised.

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Marcello Franchini, Giuseppe Mazza, Emiliano Mori
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Zoonotic Pathogens in Wildlife Traded in Markets for Human Consumption, Laos
Pruksa Nawtaisong, Matthew T. Robinson, Khongsy Khammavong, Phonesavanh Milavong, Audrey Rachlin, Sabine Dittrich, Audrey Dubot-Pérès, Malavanh Vongsouvath, Paul F. Horwood, Philippe Dussart, Watthana Theppangna, Bounlom Douangngeum, Amanda E. Fine, Mathi
Emerging Infectious Diseases.2022; 28(4): 860. CrossRef

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Molecular Detection of Spirometra decipiens in the United States: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Woon-Mok Sohn, Keeseon S. Eom; Korean J Parasitol 2016;54(4):503-507.
Published online August 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.4.503

Abstract
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The genus Spirometra belongs to the family Diphyllobothriidae and order Pseudophyllidea, and includes intestinal parasites of cats and dogs. In this study, a plerocercoid labeled as Spirometra mansonoides from the USA was examined for species identification and phylogenetic analysis using 2 complete mitochondrial genes, cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit 3 (nad3). The cox1 sequences (1,566 bp) of the plerocercoid specimen (USA) showed 99.2% similarity to the reference sequences of the plerocercoid of Korean Spirometra decipiens (GenBank no. KJ599679), and 99.1% similarity in regard to nad3 (346 bp). Phylogenetic tree topologies generated using 4 analytical methods were identical and showed high confidence levels with bootstrap values of 1.00, 100%, 100%, and 100% for Bayesian inference (BI), maximum-likelihood (ML), neighbor-joining (NJ), and maximum parsimony (MP) methods, respectively. Representatives of Diphyllobothrium and Spirometra species formed a monophyletic group, and the sister-genera status between these species was well supported. Trapezoic proglottids in the posterior 1/5 region of an adult worm obtained from an experimentally infected cat were morphologically examined. The outer uterine loop of the uterus coiling characteristically consisted of 2 complete turns. The results clearly indicated that the examined Spirometra specimen from the USA matched to S. decipiens very well, and indicated possible presence of the life cycle of this species in this region.

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Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
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Roman Kuchta, Anna J. Phillips, Tomáš Scholz
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Shoko YOGO, Sakurako IMAMURA, Kiko NAGAI, Kayo HARADA, Eiji NAGAYASU, Haruhiko MARUYAMA, Kazunori URABE
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Nataliya Yu. Rubtsova, Richard A. Heckmann
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Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
The Korean Journal of Parasitology.2020; 58(5): 577. CrossRef
Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom
The Korean Journal of Parasitology.2018; 56(1): 87. CrossRef
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Wen-Fang Dong, Hang Zhang, Ru-Meng Wang, Hong-Chun Pan
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Journal of Korean Medical Science.2018;[Epub] CrossRef

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Two Echinostome Species, Pegosomum bubulcum and Nephrostomum ramosum (Digenea: Echinostomatidae), from an Eastern Cattle Egret, Bubulcus ibis coromandus, in Republic of Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Eunju Kim, Ki-Jeong Na, Keeseon S. Eom; Korean J Parasitol 2016;54(4):485-496.
Published online August 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.4.485

Abstract
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We describe 2 echinostome species recovered from an Eastern cattle egret, Bubulcus ibis coromandus, from Cheongju-si (city), Chungcheongbuk-do (province), Korea. Total 72 Pegosomum bubulcum specimens were recovered from the bile duct. They were 7,566×2,938 μm in average size and had 27 collar spines with vitelline extension from anterior 1/3 level of the esophagus to mid-level of the posterior testis as characteristic features. Total 9 specimens of Nephrostomum ramosum were recovered in the small intestines of the bird. They were ribbon-shaped, 11,378×2,124 μm in average size, and morphologically variable in some organs, i.e., the number of collar spines (47-50), the shape of ovary and testes, and the extension of vitelline follicles. These morphological variations observed in a single host indicated that these features are not critical for the classification of Nephrostomum species and thus were reconsidered taxonomically as synonym of N. ramosum. This study is the first report documenting and describing both flukes and their associated genera in Korea.

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Nada A. Ibrahim, Ismail M. Shalaby, Mahi A. Ghobashy, Azza A. Taeleb, Elham A. Elkhawass
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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
Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
The Korean Journal of Parasitology.2019; 57(6): 647. CrossRef
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
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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Brief Communications

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; Korean J Parasitol 2016;54(3):349-355.
Published online June 30, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.3.349

Abstract
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In July 2014, a nematode species, Schistorophus cirripedesmi Rhizhikov and Khokhlova, 1964, was recovered from a bar-tailed godwit, Limosa lapponica baueri that was stored in a -20˚C freezer in the Chungnam Wild Animal Rescue Center. The bird was collected in 2012 from the coastal region of Pyeongtaek-si (City), Gyeonggi-do (Province) in the Republic of Korea, although the exact date is not clear. At necropsy, 9 nematodes were found in the gizzard of the bird. The parasites had 4 horn-like cephalic cuticular ornamentations. After morphometric comparison and morphological observations, including scanning electron microscopy, the nematodes were identified as S. cirripedesmi. This is the first description of a nematode species in a shorebird in Korea. This is also the first time this genus and species have been found in Korea.

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Three Nematode Species Recovered from Terrestrial Snakes in Republic of Korea: Seongjun Choe, Junsik Lim, Hyun Kim, Youngjun Kim, Heejong Kim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2016;54(2):205-213.
Published online April 30, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.2.205

Abstract
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The majority of parasitological studies of terrestrial snakes in Korea have focused on zoonotic parasites. However, in the present study, we describe 3 unrecorded nematode species recovered from 5 species of snakes (n=6) in Korea. The examined snakes, all confiscated from illegal hunters, were donated by the Chungnam Wild Animal Rescue Center and Korean Broadcasting System in July 2014 and February 2015. Light and scanning electron microscopies on the shapes of spicules that are either bent or straight (kalicephalids) and the presence of the intestinal cecum (ophidascarids) figured out 3 nematodes; Kalicephalus brachycephalus Maplestone, 1931, Kalicephalus sinensis Hs?, 1934, and Ophidascaris excavata Hs? and Hoeppli, 1934. These 3 species of nematode faunas are recorded for the first time in Korea.

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Original Articles

Genetic Identification of Spirometra decipiens Plerocercoids in Terrestrial Snakes from Korea and China: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Woon- Mok Sohn, Keeseon S. Eom; Korean J Parasitol 2016;54(2):181-185.
Published online April 30, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.2.181

Abstract
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Human sparganosis is a zoonotic disease caused by infection with larval forms (procercoid/plerocercoid) of Spirometra spp. The purpose of this study was to identify Spirometra spp. of infected snakes using a multiplex PCR assay and phylogenetic analysis of mitochondrial DNA sequence data from the spargana of terrestrial snakes obtained from Korea and China. A total of 283 snakes were obtained that included 4 species of Colubridae comprising Rhabdophis tigrinus tigrinus (n=150), Dinodon rufozonatum rufozonatum (n=64), Elaphe davidi (n=2), and Elaphe schrenkii (n=7), and 1 species of Viperidae, Agkistrodon saxatilis (n=60). The snakes were collected from the provinces of Chungbuk, Chungnam, and Gyeongbuk in Korea (n=161), and from China (n=122). The overall infection rate with spargana was 83% (235/283). The highest was recorded for D. rufozonatum rufozonatum (100%), followed by A. saxatilis (85%) and R. tigrinus tigrinus (80%), with a negative result for E. davidi (0%) and E. schrenkii (0%). The sequence identities between the spargana from snakes (n=50) and Spirometra erinaceieuropaei (KJ599680) or S. decipiens (KJ599679) control specimens were 90.8% and 99.2%, respectively. Pairwise genetic distances between spargana (n=50) and S. decipiens ranged from 0.0080 to 0.0107, while those between spargana and S. erinaceieuropaei ranged from 0.1070 to 0.1096. In this study, all of the 904 spargana analyzed were identified as S. decipiens either by a multiplex PCR assay (n=854) or mitochondrial cox1 sequence analysis (n=50).

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Human Sparganosis in Korea
Jeong-Geun Kim, Chun-Seob Ahn, Woon-Mok Sohn, Yukifumi Nawa, Yoon Kong
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Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
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21 Web of Science
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Mitochondrial Genome Sequences of Spirometra erinaceieuropaei and S. decipiens (Cestoidea: Diphyllobothriidae): Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Hyeong-Kyu Jeon; Korean J Parasitol 2015;53(4):455-463.
Published online August 25, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.4.455

Abstract
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The present study was performed to compare the mitochondrial genomes between 2 Spirometra tapeworms, Spirometra erinaceieuropaei and Spirometra decipiens (Cestoidea: Diphyllobothriidae), which larval stages are important etiological agents of sparganosis in humans. For each species, the full mitochondrial genome was amplified in 8 overlapping fragments using total genomic DNA purified from a single worm as the template. The mitochondrial genomes were 13,643 bp (S. erinaceieuropaei) and 13,641 bp (S. decipiens) in length and contained 36 genes; 12 protein-coding genes, 2 ribosomal RNA (rRNA, small and large subunits), and 22 transfer RNAs (tRNAs). The 12 protein-coding genes constituted 10,083 bp (S. erinaceieuropaei) and 10,086 bp (S. decipiens) of their respective mitochondrial genomes. The tRNA genes, ranging in length from 56 to 70 bp, were identified based on putative secondary structures such as the typical cloverleaf shape. A total of 23 intergenic sequences, varying from 1 to 204 bp in size, were interspersed in S. erinaceieuropaei (total, 504 bp) and S. decipiens (total, 496 bp) mtDNA. The 12 protein-coding genes of S. erinaceieuropaei and S. decipiens differed by 12.4%, whereas the overall difference in mtDNA sequence between S. erinaceieuropaei and S. decipiens was 12.9%. Thus, from the standpoint of the mitochondrial genome, S. decipiens represents a valid species that can be distinguished from S. erinaceieuropaei.

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Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom
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Differential Diagnosis of Human Sparganosis Using Multiplex PCR
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Molecular Detection of Spirometra decipiens in the United States
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Infection Status of Zoonotic Trematode Metacercariae in Fishes from Vientiane Municipality and Champasak Province in Lao PDR: Keeseon S. Eom, Han-Sol Park, Dongmin Lee, Woon-Mok Sohn, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min, Han-Jong Rim, Bounnaloth Insisiengmay, Bounlay Phommasack; Korean J Parasitol 2015;53(4):447-453.
Published online August 25, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.4.447

Abstract
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The infection status of fishborne zoonotic trematode (FZT) metacercariae was investigated in fishes from 2 localities of Lao PDR. Total 157 freshwater fishes (17 species) were collected in local markets of Vientiane Municipality and Champasak Province in December 2010 and July 2011, and each fish was examined by the artificial digestion method. Total 6 species of FZT metacercariae, i.e., Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, Haplorchis pumilio, Centrocestus formosanus, and Procerovum varium, were detected in fishes from Vientiane Municipality. The metacercariae of O. viverrini were detected in 50 (49.5%) out of 101 fishes (6 species), and their average number was 154 per fish infected. The remaining 5 species of heterophyid metacercariae were detected in 36.8%, 65.8%, 9.4%, 23.9%, and 5.1% fishes examined, and their average densities were 12, 1,038, 4, 15, and 13 per infected fish, respectively. In fishes from Champasak Province, 3 species of FZT metacercariae, i.e., O. viverrini, H. taichui, and H. yokogawai, were detected. Only 2 O. viverrini metacercariae were found in only 1 Barbonymus schwanefeldi. The metacercariae of H. taichui and H. yokogawai were detected in 60.0% and 50.0% of fishes examined, and their average densities were 47 and 28 per fish infected. By the present study, it has been confirmed that several species of FZT metacercariae are prevalent in fishes from Vientiane Municipality, with P. varium being a new member of FZT in Lao PDR. In comparison, FZT metacercariae are less prevalent in fishes from Champasak Province.

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Human Infections with Spirometra decipiens Plerocercoids Identified by Morphologic and Genetic Analyses in Korea: Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom; Korean J Parasitol 2015;53(3):299-305.
Published online June 30, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.3.299

Abstract
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Tapeworms of the genus Spirometra are pseudophyllidean cestodes endemic in Korea. At present, it is unclear which Spirometra species are responsible for causing human infections, and little information is available on the epidemiological profiles of Spirometra species infecting humans in Korea. Between 1979 and 2009, a total of 50 spargana from human patients and 2 adult specimens obtained from experimentally infected carnivorous animals were analyzed according to genetic and taxonomic criteria and classified as Spirometra erinaceieuropaei or Spirometra decipiens depending on the morphology. Morphologically, S. erinaceieuropaei and S. decipiens are different in that the spirally coiled uterus in S. erinaceieuropaei has 5-7 complete coils, while in S. decipiens it has only 4.5 coils. In addition, there is a 9.3% (146/1,566) sequence different between S. erinaceieuropaei and S. decipiens in the cox1 gene. Partial cox1 sequences (390 bp) from 35 Korean isolates showed 99.4% (388/390) similarity with the reference sequence of S. erinaceieuropaei from Korea (G1724; GenBank KJ599680) and an additional 15 Korean isolates revealed 99.2% (387/390) similarity with the reference sequences of S. decipiens from Korea (G1657; GenBank KJ599679). Based on morphologic and molecular databases, the estimated population ratio of S. erinaceieuropaei to S. decipiens was 35: 15. Our results indicate that both S. erinaceieuropaei and S. decipiens found in Korea infect humans, with S. erinaceieuropaei being 2 times more prevalent than S. decipiens. This study is the first to report human sparganosis caused by S. decipiens in humans in Korea.

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Case Report

Strongyloides myopotami (Secernentea: Strongyloididae) from the Intestine of Feral Nutrias (Myocastor coypus) in Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Mihyeon Oh, Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2014;52(5):531-535.
Published online October 22, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.5.531

Abstract
PDF

Surveys on helminthic fauna of the nutria, Myocastor coypus, have seldom been performed in the Republic of Korea. In the present study, we describe Strongyloides myopotami (Secernentea: Strongyloididae) recovered from the small intestine of feral nutrias. Total 10 adult nutrias were captured in a wetland area in Gimhae-si (City), Gyeongsangnam-do (Province) in April 2013. They were transported to our laboratory, euthanized with ether, and necropsied. About 1,300 nematode specimens were recovered from 10 nutrias, and some of them were morphologically observed by light and scanning electron microscopies. They were 3.7-4.7 (4.0±0.36) mm in length, 0.03-0.04 (0.033) mm in width. The worm dimension and other morphological characters, including prominent lips of the vulva, blunted conical tail, straight type of the ovary, and 8-chambered stoma, were all consistent with S. myopotami. This nematode fauna is reported for the first time in Korea.

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Morphological identification and phylogenetic analysis of Eimeria coypi and Eimeria fluviatilis (Apicomplexa: Eimeriidae) isolated from nutrias (Myocastor coypus [Rodentia]) in Japan
Sora Ouchi, Ryosuke Koda, Yuzuru Ishizuka, Shigetoyo Ikemoto, Mutsuko Sakata, Susumu Iwaide, Tomoyuki Shibahara, Atsushi Hinenoya, Shigehiko Uni, Kazumi Sasai, Makoto Matsubayashi
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Yuga MORI, Atsushi NAKA, Ryosuke KODA, Yuzuru ISHIZUKA, Atsushi HINENOYA, Tomoyuki SHIBAHARA, Kazumi SASAI, Makoto MATSUBAYASHI
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An update on the distribution of the coypu, Myocastor coypus, in Asia and Africa through published literature, citizen-science and online platforms
Luca Pedruzzi, Anna Schertler, Silvia Giuntini, Ivan Leggiero, Emiliano Mori
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A Case of Fascioliasis in A Wild Nutria, Myocastor coypus, in Republic of Korea
Hyo-Seok Kim, Joo-Yeon Kong, Jong-Hyun Kim, Seong-Chan Yeon, Il-Hwa Hong
The Korean Journal of Parasitology.2018; 56(4): 375. CrossRef
Histopathological findings in wild Nutrias (Myocastor coypus) with Capillaria hepatica infection
Il-Hwa HONG, Sun-Young KANG, Jong-Hyun KIM, Seong-Hoon SEOK, Seong-Kyu LEE, Seong-Jin HONG, Seung-Yong LEE, Se-Jin PARK, Joo-Yeon KONG, Seong-Chan YEON
Journal of Veterinary Medical Science.2016; 78(12): 1887. CrossRef

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Original Article

Three Echinostome Species from Wild Birds in the Republic of Korea: Seongjun Choe, Dongmin Lee, Hansol Park, Mihyeon Oh, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, Youngjun Kim, Hang Lee, Keeseon S. Eom; Korean J Parasitol 2014;52(5):513-520.
Published online October 22, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.5.513

Abstract
PDF

Three echinostome species, i.e., Patagifer bilobus, Petasiger neocomense, and Saakotrema metatestis, are newly recorded in the trematode fauna of the Republic of Korea. They were recovered from 3 species of migratory birds (Platalea minor, Podiceps cristatus, and Egretta garzetta), which were donated by the Wildlife Center of Chungbuk (WCC) and the Conservation Genome Resource Bank for Korean Wildlife (CGRB). Only 1 P. bilobus specimen was recovered from the intestine of a black-faced spoonbill (P. minor), and characterized by the bilobed head crown with a deep dorsal incision and 54 collar spines. Twenty P. neocomense were recovered from the intestine of a great crested grebe (P. cristatus), and they had a well-developed head crown with 19 spines and 2 testes obliquely located at the posterior middle of the body. Total 70 S. metatestis were collected from the bursa of Fabricius of 1 little egret (E. garzetta). It is characterized by stout tegumental spines covered in the entire leaf-shaped body, posterior extension of the uterus, presence of the uroproct and a well-developed head crown with 12 pairs of collar spines on each side. By the present study, these 3 echinostome species are newly added to the trematode fauna in Korea.

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Filling the void: Morphological and molecular phylogenetic analyses of helminths assemblage from the Egyptian egret Bubulcus ibis
Nada A. Ibrahim, Ismail M. Shalaby, Mahi A. Ghobashy, Azza A. Taeleb, Elham A. Elkhawass
Parasitology International.2025; 104: 102972. CrossRef
The Nuclear Ribosomal Transcription Units of Two Echinostomes and Their Taxonomic Implications for the Family Echinostomatidae
Yu Cao, Ye Li, Zhong-Yan Gao, Bo-Tao Jiang
Biology.2025; 14(8): 1101. CrossRef
First record of Patagifer bilobus (Rudolphi, 1819) Dietz, 1909 (Digenea: Echinostomatidae), with a morphological and molecular characterization from two threskiornithid species in Mexico
Ana Lucia Sereno-Uribe, Marcelo Tonatiuh González-García, Mirza Patricia Ortega-Olivares, Alejandra López-Jiménez, Martín García-Varela, Leopoldo Andrade-Gómez
Parasitology Research.2022; 121(7): 1921. CrossRef
EXAMINATION OF HELMINTH PARASITES IN THE FECAL SAMPLES OF MAGPIES (Pica pica), JACKDAWS (Corvus monedula), AND ROOKS (Corvus frugilegus) IN THE VICINITIES OF VAN PROVINCE/TURKEY
Ali Bilgin YILMAZ, Erkan AZİZOĞLU, Özdemir ADIZEL
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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
Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
The Korean Journal of Parasitology.2019; 57(6): 647. CrossRef
Echinochasmus swabiensis n. sp. (Digenea: Echinostomatidae) from Black Kite (Milvus Migrans Migrans) in Swabi District, Pakistan
S. Suleman, M. S. Khan, X. Q. Zhu, A. M. Dharejo, E. C. Uwalaka, M. Shah, O. A. Adediran
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Woon-Mok Sohn, Byoung-Kuk Na, Sung-Shik Shin
The Korean Journal of Parasitology.2017; 55(3): 287. 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
Two Echinostome Species, Pegosomum bubulcum and Nephrostomum ramosum (Digenea: Echinostomatidae), from an Eastern Cattle Egret, Bubulcus ibis coromandus, in Republic of Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Eunju Kim, Ki-Jeong Na, Keeseon S. Eom
The Korean Journal of Parasitology.2016; 54(4): 485. CrossRef

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Case Report

Four Cases of Taenia saginata Infection with an Analysis of COX1 Gene: Jaeeun Cho, Bong-Kwang Jung, Hyemi Lim, Min-Jae Kim, Thanapon Yooyen, Dongmin Lee, Keeseon S. Eom, Eun-Hee Shin, Jong-Yil Chai; Korean J Parasitol 2014;52(1):79-83.
Published online February 19, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.1.79

Abstract
PDF

Human taeniases had been not uncommon in the Republic of Korea (=Korea) until the 1980s. The prevalence decreased and a national survey in 2004 revealed no Taenia egg positive cases. However, a subsequent national survey in 2012 showed 0.04% (10 cases) prevalence of Taenia spp. eggs suggesting its resurgence in Korea. We recently encountered 4 cases of Taenia saginata infection who had symptoms of taeniasis that included discharge of proglottids. We obtained several proglottids from each case. Because the morphological features of T. saginata are almost indistinguishable from those of Taenia asiatica, molecular analyses using the PCR-RFLP and DNA sequencing of the cytochrome c oxidase subunit 1 (cox1) were performed to identify the species. The PCR-RFLP patterns of all of the 4 specimens were consistent with T. saginata, and the cox1 gene sequence showed 99.8-100% identity with that of T. saginata reported previously from Korea, Japan, China, and Cambodia. All of the 4 patients had the history of travel abroad but its relation with contracting taeniasis was unclear. Our findings may suggest resurgence of T. saginata infection among people in Korea.

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Xiu-Min Han, Xue-Yong Zhang, Ying-Na Jian, Qing-Shan Tian
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The Korean Journal of Parasitology.2019; 57(3): 265. CrossRef
Four Taeniasis saginata Cases Diagnosed at a University Hospital in Korea
Eun Jeong Won, Ju Hyeon Shin, Yu Jeong Lee, Moon-Ju Kim, Seung Ji Kang, Sook In Jung, Soo Hyun Kim, Jong Hee Shin, Jong-Yil Chai, Sung-Shik Shin
The Korean Journal of Parasitology.2019; 57(3): 313. CrossRef
Ten Cases of Taenia saginata Infection Confirmed by Analysis of the Internal Transcribed Spacer 1 rDNA Region in the Republic of Korea
Su-Min Song, Hae Soo Yun, Dorene VanBik, Hyun-Ha Chang, Sang-Ah Lee, Shin-Woo Kim, Namhee Ryoo, Dong Yeub Eun, Nan Young Lee, Youn-Kyoung Goo, Yeonchul Hong, Meesun Ock, Hee-Jae Cha, Dong-Il Chung
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Eun Jeong Won, Bong-Kwang Jung, Hyemi Song, Mi-Seon Kim, Hyun-Seung Kim, Keon Hoon Lee, Min-Jae Kim, Myung Geun Shin, Jong Hee Shin, Soon-Pal Suh, Sung-Jong Hong, Woon-Mok Sohn, Thi Thi Htoon, Htay Htay Tin, Jong-Yil Chai
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Original Article

Complete Mitochondrial Genome of Haplorchis taichui and Comparative Analysis with Other Trematodes: Dongmin Lee, Seongjun Choe, Hansol Park, Hyeong-Kyu Jeon, Jong-Yil Chai, Woon-Mok Sohn, Tai-Soon Yong, Duk-Young Min, Han-Jong Rim, Keeseon S. Eom; Korean J Parasitol 2013;51(6):719-726.
Published online December 31, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.6.719

Abstract
PDF

Mitochondrial genomes have been extensively studied for phylogenetic purposes and to investigate intra- and interspecific genetic variations. In recent years, numerous groups have undertaken sequencing of platyhelminth mitochondrial genomes. Haplorchis taichui (family Heterophyidae) is a trematode that infects humans and animals mainly in Asia, including the Mekong River basin. We sequenced and determined the organization of the complete mitochondrial genome of H. taichui. The mitochondrial genome is 15,130 bp long, containing 12 protein-coding genes, 2 ribosomal RNAs (rRNAs, a small and a large subunit), and 22 transfer RNAs (tRNAs). Like other trematodes, it does not encode the atp8 gene. All genes are transcribed from the same strand. The ATG initiation codon is used for 9 protein-coding genes, and GTG for the remaining 3 (nad1, nad4, and nad5). The mitochondrial genome of H. taichui has a single long non-coding region between trnE and trnG. H. taichui has evolved as being more closely related to Opisthorchiidae than other trematode groups with maximal support in the phylogenetic analysis. Our results could provide a resource for the comparative mitochondrial genome analysis of trematodes, and may yield genetic markers for molecular epidemiological investigations into intestinal flukes.

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Brief Communication

Human Infections with Liver and Minute Intestinal Flukes in Guangxi, China: Analysis by DNA Sequencing, Ultrasonography, and Immunoaffinity Chromatography: Hyeong-Kyu Jeon, Dongmin Lee, Hansol Park, Duk-Young Min, Han-Jong Rim, Hongman Zhang, Yichao Yang, Xueming Li, Keeseon S Eom; Korean J Parasitol 2012;50(4):391-394.
Published online November 26, 2012; DOI: https://doi.org/10.3347/kjp.2012.50.4.391

Abstract
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The prevalence of liver and intestinal fluke infections was determined by surveying inhabitants of Hengxuan, Fusui, and Shanglin villages which were known to be endemic for liver flukes in Guangxi, China in May 2010. A total of 718 people were examined for helminth eggs by the Kato-Katz thick smear technique, ultrasonography, immunoaffinity chromatography, and DNA sequencing. The overall egg positive rate was found to be 59.6% (28.0-70.6%) that included mixed infections with liver and intestinal flukes. Cases showing higher than 20,000 eggs per gram of feces (EPG) were detected between 1.3% and 16.2%. Ultrasonographic findings exhibited overall 28.2% (72 of 255 cases) dilatation rate of the intrahepatic bile duct. Clonorchis sinensis infection was detected serologically in 88.3% (38 of 43 cases) among C. sinensis egg positive subjects by the immunoaffinity chromatography using a specific antigen for C. sinensis. For differential diagnosis of the liver and intestinal flukes, more precise PCR and nucleotide sequencing for copro-DNA were performed for 46 egg positive cases. Mixed infections with C. sinensis and Metagonimus yokogawai were detected in 8 of 46 egg positive cases, whereas 29 specimens were positive for Haplorchis taichui. Ultrasonographic findings and immunoaffinity chromatography results showed usefulness, even in a limited way, in figuring out of the liver fluke endemicity.

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