Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Gynaecotyla squatarolae (Digenea: Microphallidae) from rats experimentally infected with metacercariae from the shore crab, Macrophthalmus dilatatus

  • Seo, Min (Department of Parasitology, College of Medicine, Dankook University) ;
  • Guk, Sang-Mee (Department of Parasitology, and Tropical Medicine Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center) ;
  • Lee, Seung-Ha (Department of Bio-Medical College of Medicine, Dankook University) ;
  • Chai, Jong-Yil (Department of Parasitology, and Tropical Medicine Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center)
  • Published : 2007.09.30
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Abstract

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 ($391.1{\times}362.5{\mu}m$), 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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References

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