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Echinostoma revolutum and Echinoparyphium recurvatum recovered from house rats in Yangyang-gun, Kangwon-do
S H Lee,W M Sohn,* and J Y Chai
Department of Parasitology and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 110-460, Korea.
Abstract
During an investigation on intestinal flukes of house rats in Yangyang-gun, Kangwon-do, a total of 6 species of trematodes belonging to 3 families; Echinostomatidae (Echinostoma hortense, E. cinetorchis, E. revolutum and Echinoparyphium recurvatum), Diplostomidae (Fibricola seoulensis) and Plagiorchiidae (Plagiorchis muris), were recovered from two adult rats. E. revolutum and E. recurvatum were new trematode faunae of rats in Korea. E. revolutum had an elongated body, 5.3-6.0 mm long and 1.0-1.3 mm wide. The total number of collar spines was 35-37 including 5 end group ones on each ventral corner. Its coiled uterus contained numerous eggs. E. recurvatum also had an elongated body, 3.5-4.7 mm long and 0.50-0.65 mm wide. It had total 45 collar spines including 4 end group ones. The uterus was short with only a few eggs. It has been first confirmed by this study that E. revolutum and E. recurvatum are indigenously distributed among house rats in Korea.
Fig. 2 Ventral view of Echinoparyphium recurvatum.
Tables
Table 1 Infection status of the intestinal flukes in house rat from Hyunbuk-myon, Yangyang-gun, Kangwon-do
Table 2 Comparison of the measurements of E. revolutum adults by authors(mm)
Table 3 Comparison of the measurements of E. recurvatum adults by authors(mm)
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