Parasites, Hosts and Diseases

  • 제40권3호
  • /
  • Pages.107-112
  • /
  • 2002
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  • 2982-5164(pISSN)
  • /
  • 1738-0006(eISSN)
대한기생충학·열대의학회 (The Korea Society for Parasitology and Tropical Medicine)
권호 표지

Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes

  • Chai, Jong-Yil (Department of Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center) ;
  • Sohn, Woon-Mok (Department of Parasitology, College of Medicine, Gyeongsang National University) ;
  • Choi, Sung-Yil (Department of Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center) ;
  • Lee, Soon-Hyung (Department of Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center)
  • 발행 : 2002.09.01
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초록

A scanning electron microscopic study was performed on the surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adults. Metacercariae were collected from gills and muscles of mullets (Mugil cephalus) caught in a known endemic area, and adult flukes were harvested from dogs after 8 weeks of experimental infection. The worm was calabash form with its posterior part broader than the anterior part. Tegumental spines were densely distributed over the body surface, except on the suckers and genital apparatus, and around the excretory pore. Well differentiated spines were observed on the anterior half of the body, with 14-16 tips ventrally, and 19-20 tips dorsally. On the oral sucker. three pairs of type I sensory papillae (uni-ciliated knob-like swellings) and one pair of type II sensory papillae (aciliated round-swellings) were observed on the anterior and posterior parts of the lip, respectively. On the lip of the ventral sucker, one pair of type II sensory papillae was distributed only on its posterior part. Sperms were seen emerging from or entering into the genital apparatus. The results showed that the surface ultrastructure of P. summa was unique among the heterophyid trematodes, especially in digitation of tegumental spines and in distribution of sensory papillae on oral and ventral suckers.

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참고문헌

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