Experimental Life Cycle of Hypoderaeum conoideum (Block, 1872) Diez, 1909(Trematoda: Echinostomatidae) Parasite from the North of Iran

  • Hakim AZIZI Dept. of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  • Ali FARAHNAK Dept. of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  • Iraj MOBEDI Dept. of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  • MohamadBagher MOLAEI RAD Dept. of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Keywords: Echinostomatidae, Hypoderaeum conoideum, life cycle, Lymnaea palustris, Cercaria

Abstract

Background: Human Echinostomiasis is an intestinal disease caused by the members of family Echinostomatidae parasites. The aim of present research was to identify echinos­tomatidae cercariae emitted by Lymnaea palustris snails from Mazandaran province in the north of Iran based on the morphological and morphometrical charac­teristics of the different stages of experimental parasite life cycle.Methods: Echinostomatidae cercariae were collected from L. palustris (Gastropoda: Lymnaeidae) of the north of Iran. To collect metacercaria, 50 healthy snails were infected with cercariae experimentally (50 cercariae for each). To obtain the adult stage, 9 laboratory animals (3 ducks, 2 rats, 2 mice and 2 quails) were fed with 60 metacercaria for each. To identify parasite, the different stages of worm were exam­ined using light microscope and then the figures were draw under camera Lucida microscope and measures were determined.Results: Averagely, 15metacercaria were obtained from each snail that had been previously exposed with cercariae. Ducks presented worm eggs in feces after 10-15 days post-infection. Intestinal worms were collected and identified as Hypoderaeum conoideum on the bases of figures and measures of cephalic collar, the number of collar spine, suckers diameter ratio, testes arrangement, etc.Conclusion: H. conoideum cercariae and adult worm are described. This is the first report of the different stages of the experimental life cycle of this parasite in Iran.

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How to Cite
1.
AZIZI H, FARAHNAK A, MOBEDI I, MOLAEI RAD M. Experimental Life Cycle of Hypoderaeum conoideum (Block, 1872) Diez, 1909(Trematoda: Echinostomatidae) Parasite from the North of Iran. IJPA. 10(1):102-9.
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