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.
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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
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Metacercariae of Gynaecotyla squatarolae (Digenea: Microphallidae) were discovered from the shore crab, Macrophthalmus dilatatus, purchased at a market in a coastal town of Taean-Eup, Chungcheongnam-do, Republic of Korea. Their adult flukes were confirmed by experimental infection of rats. The metacercariae of G. squatarolae were elliptical (391.1 x 362.5 ?m), and the excysted metacercariae had progenetic genital organs, including the ovary and testes. To obtain adult flukes, 6 Sprague-Dawley rats were fed 500 metacercariae each, and killed at days 2, 4, and 6 post-infection. The adult flukes were identified as G. squatarolae (Yamaguti, 1934) Yamaguti, 1939, based on morphological characters, including 2 ventral suckers (1 large and 1 small), a large genital atrium equipped with the cirrus and the metraterm, separated male and female genital pores, a transversely long cirrus pouch, and extensive vitelline follicles. In the present study, it has been first proven that the shore crab M. dilatatus is a second intermediate host for G. squatarolae in the Republic of Korea.
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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
First report of human infection with Gynaecotyla squatarolae and first Korean record of Haplorchis pumilio in a patient Ok-Sik Chung, Hye-Jung Lee, Yoo-Me Kim, Woon-Mok Sohn, Sahng-June Kwak, Min Seo Parasitology International.2011; 60(2): 227. CrossRef
Discovery ofMaritrema jebuensisn. 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 The Korean Journal of Parasitology.2010; 48(4): 335. CrossRef
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Surveys of Gynaecotyla squatarolae and Microphallus koreana (Digenea: Microphallidae) Metacercariae in Two Species of Estuarine Crabs in Western Coastal Areas, Korea Hye Jung Lee, Jong-Yil Chai, Jin-Woo Lee, Ho Jin, Kwan-Hong Min, Yong-Jun Cho, Min Seo The Korean Journal of Parasitology.2010; 48(1): 81. CrossRef
Tegumental Ultrastructure of Adult Gynaecotyla squatarolae (Digenea: Microphallidae) Do-Seon Lim, Ki-Ju Choi, Sang-Mee Guk, Jong-Yil Chai, Il-Yong Park, Yun-Kyu Park, Min Seo The Korean Journal of Parasitology.2008; 46(2): 87. CrossRef
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To figure out the geographical distribution of Gynaecotyla squatarolae and Microphallus koreana metacercariae in Korea, shore crabs of southwestern coastal areas were examined.
Eight coastal areas in Inchon-si (A), Gyeonggi-do (B), Chungcheongnam-do (C, D, and E), Jeollabuk-do (F), and Jeollanam-do (G and H) were selected, and 2 kinds of crabs, Macrophthalmus dilatatus and/or Macrophthalmus japonicus, were caught. After transportation to the laboratory, 15 crabs per each group were grouped and ground in a mortar and pestle, and examined for microphallid metacercariae. In M.
dilatatus, G. squatarolae metacercariae were recovered from 3 (C, E, and H) out of 6 regions, but M. koreana metacercariae were not recovered. In the case of M.
japonicus, G. squatarolae metacercariae were recovered from 6 (B, D, E, F, G, and H) of 7 areas surveyed, and M. koreana matacercariae were detected from 5 regions (A, B, D, F, and H). These results indicate that the life cycle of G.
squatarolae is maintained in the western coastal areas using M. dilatatus and M. japonicus as intermediate hosts, while that of M. koreana is maintained only using M. japonicus.
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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
Changes of exoskeleton surface roughness and expression of crucial participation genes for chitin formation and digestion in the mud crab (Macrophthalmus japonicus) following the antifouling biocide irgarol Kiyun Park, Chamilani Nikapitiya, Won-Seok Kim, Tae-Soo Kwak, Ihn-Sil Kwak Ecotoxicology and Environmental Safety.2016; 132: 186. CrossRef
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First report of human infection with Gynaecotyla squatarolae and first Korean record of Haplorchis pumilio in a patient Ok-Sik Chung, Hye-Jung Lee, Yoo-Me Kim, Woon-Mok Sohn, Sahng-June Kwak, Min Seo Parasitology International.2011; 60(2): 227. 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
Discovery ofMaritrema jebuensisn. 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 The Korean Journal of Parasitology.2010; 48(4): 335. CrossRef
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