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Parvatrema duboisi (Digenea: Gymnophallidae) Life Cycle Stages in Manila Clams, Ruditapes philippinarum, from Aphae-do (Island), Shinan-gun, Korea

Korean Journal of Parasitology 2021년 59권 1호 p.83 ~ 88
정봉관, 장태희, Shin Hye-Joo, Ryoo Seung-Wan, 홍수지, 이정규, 송혜미, 조재은, Kim Deok-Gyu, 전호종, 김민재, 원은정, 한은택, 신은희, 채종일,
소속 상세정보
정봉관 ( Jung Bong-Kwang ) - Korea Association of Health Promotion Institute of Parasitic Diseases
장태희 ( Chang Tae-Hee ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Shin Hye-Joo ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Ryoo Seung-Wan ) - Korea Association of Health Promotion Institute of Parasitic Diseases
홍수지 ( Hong Soo-Ji ) - Korea Association of Health Promotion Institute of Parasitic Diseases
이정규 ( Lee Jeong-Gyu ) - Korea Association of Health Promotion Institute of Parasitic Diseases
송혜미 ( Song Hye-Mi ) - Korea Association of Health Promotion Institute of Parasitic Diseases
조재은 ( Cho Jae-Eun ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Kim Deok-Gyu ) - Korea Association of Health Promotion Institute of Parasitic Diseases
전호종 ( Jun Ho-Jong ) - Inha University College of Medicine Department of Tropical Medicine
김민재 ( Kim Min-Jae ) - Asan Medical Center Department of Infectious Diseases
원은정 ( Won Eun-Jeong ) - Chonnam National University Medical School Department of Parasitology and Tropical Medicine
한은택 ( Han Eun-Taek ) - Kangwon National University Department of Medical Environmental Biology and Tropical Medicine
신은희 ( Shin Eun-Hee ) - Seoul National University College of Medicine Department of Parasitology and Tropical Medicine
채종일 ( Chai Jong-Yil ) - Korea Association of Health Promotion Institute of Parasitic Diseases

Abstract


Life cycle stages, including daughter sporocysts, cercariae, and metacercariae, of Parvatrema duboisi (Dollfus, 1923) Bartoli, 1974 (Digenea: Gymnophallidae) have been found in the Manila clam Ruditapes philippinarum from Aphaedo (Island), Shinan-gun, Jeollanam-do, Korea. The daughter sporocysts were elongated sac-like and 307-570 (av. 395) μm long and 101-213 (av. 157) μm wide. Most of the daughter sporocysts contained 15-20 furcocercous cercariae each. The cercariae measured 112-146 (av. 134) μm in total length and 35-46 (av. 40) μm in width, with 69-92 (av. 85) μm long body and 39-54 (av. 49) μm long tail. The metacercariae were 210-250 (av. 231) μm in length and 170-195 (av. 185) μm in width, and characterized by having a large oral sucker, genital pore some distance anterior to the ventral sucker, no ventral pit, and 1 compact or slightly lobed vitellarium, strongly suggesting P. duboisi. The metacercariae were experimentally infected to ICR mice, and adults were recovered at day 7 post-infection. The adult flukes were morphologically similar to the metacercariae except in the presence of up to 20 eggs in the uterus. The daughter sporocysts and metacercariae were molecularly (ITS1-5.8S rDNA-ITS2) analyzed to confirm the species, and the results showed 99.8-99.9% identity with P. duboisi reported from Kyushu, Japan and Gochang, Korea. These results confirmed the presence of various life cycle stages of P. duboisi in the Manila clam, R. philippinarum, playing the role of the first as well as the second intermediate host, on Aphae-do (Island), Shinan-gun, Korea.

키워드

Parvatrema duboisi; gymnophallid; sporocyst; cercaria; metacercaria; Manila clam; Aphae-do (Island); Korea

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