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논문 기본 정보

자료유형
학술저널
저자정보
Woon-Mok Sohn (Gyeongsang National University College of Medicine) Byoung-Kuk Na (Gyeongsang National University College of Medicine) Dongmin Lee (Chungbuk National University School of Medicine) Keeseon S. Eom (Chungbuk National University School of Medicine) Tai-Soon Yong (Yonsei University College of Medicine) Jong-Yil Chai (Korea Association of Health Promotion) Duk-Young Min (Ulji University College of Medicine)
저널정보
대한기생충학열대의학회 Parasites, Hosts and Diseases The Korean Journal of Parasitology Vol.57 No.6
발행연도
2019.12
수록면
657 - 664 (8page)

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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 μm 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 μm 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.

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Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES

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