Metagonimus yokogawai

• M. yokogawai

  • Common Name: Yokogawa Fluke
  • Disease: Metagonimiasis
  • Habitat: Small intestines (in villi)
  • 1st Intermediate Host: Snails
  • 2nd Intermediate Host : Fresh/Brackish water fish
  • Final Host: Humans
  • Diagnostic Stage : Embryonated eggs in feces
  • Infective Stage: Metacercariae in fish
  • Mode of Transmission : Ingestion of infected intermediate host
  • Treatment: Praziquantel
• Egg Characteristics of M. yokogawai

  • Thin-shelled
  • Operculated with shoulders
  • No abopercular knob
  • Contains developing miracidium
• Adult Characteristics of M. yokogawai

  • 1-2.5mm x 0.5mm
  • Pyriform shape, tapering at the anterior end
  • Rounded posterior end
  • Fine spines, concentrated around the anterior end
  • Ventral sucker (genitoacetabulum) located laterally near the genital pore
• Discovered by Fujiro Katsurada in samples from Japan and Taiwan

  Metagonimus yokogawai
• Images of M. yokogawai


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