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Morphological and Molecular Characterization of Apharyngostrigea pipientis Faust, 1918 (Trematoda: Diplostomidea) from Ardeacinerea jouyi, Egretta intermedia and Nycticorax nycticorax in Korea

한국임상수의학회지 2020년 37권 5호 p.242 ~ 248
김현철, 홍의주, 류시연, 최경성, 유도현, 조정곤, 박진호, 채준석, 박배근,
소속 상세정보
김현철 ( Kim Hyeon-Cheol ) - Kangwon National University College of Veterinary Medicine
홍의주 ( Hong Eui-Ju ) - Chungnam National University College of Veterinary Medicine
류시연 ( Ryu Si-Yun ) - Chungnam National University College of Veterinary Medicine
최경성 ( Choi Kyoung-Seong ) - Kyungpook National University College of Ecology and Environment
유도현 ( Yu Do-Hyeon ) - Chonbuk National University College of Veterinary Medicine
조정곤 ( Cho Jeong-Gon ) - Chonbuk National University College of Veterinary Medicine
박진호 ( Park Jin-Ho ) - Chonbuk National University College of Veterinary Medicine
채준석 ( Chae Joon-Seok ) - Seoul National University College of Medicine Seoul National University
박배근 ( Park Bae-Keun ) - Chungnam National University College of Veterinary Medicine

Abstract


An intestinal strigeiid trematode, Apharyngostrigea pipientis, was detected from Ardea cinerea jouyi, Egretta intermedia and Nycticorax nycticorax between July, 2006 and June, 2020 in Daejeon metropolitan city and Kangwondo, Republic of Korea. It was observed with a light and scanning electron microscope (SEM), and molecularly analyzed with 18S rRNA genes. The infection rate of the strigeiid trematode was 25.9% (7/27). The body is cylindrical in whole mount, greatly elongated in outline and shows a strong dorsal curvature. The overall measurements are: length 4.1-4.8 mm; fore-body 1.00-1.20 mm by 0.8-0.9 mm; hind-body 3.2-3.6 mm by 0.43-0.46 mm. The body is covered by a relatively thick cuticle, devoid of spines. The oral sucker leads into a short esophagus that is devoid of a muscular pharynx. The holdfast organ is enormously developed. The vitelline follicles distributed dorsal wall of fore-body and hind-body. This strigeiid trematode especially differs from other species of genus Apharyngostrigea in morphology. Although these A. pipientis are several morphological distinctions from Apharyngostrigea cornu, the partial sequence of 18S rRNA showed the sequence homology of A. pipientis (99.9%) and A. cornu (99.8%), and this result revealed their conspecific relationship between A. cornu and A. pipientis. This is the first report of A. pipientis in the Republic of Korea.

키워드

Apharyngostrigea pipientis; Ardea cinerea jouyi; Egretta intermedia; Nycticorax nycticorax; Korea

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