Schistosoma mansoni

• Common Name of S. mansoni

  Manson’s Blood Fluke

  Rectal Blood Fluke
• Disease Caused by S. mansoni

  Schistosomiasis
• Habitat of S. mansoni

  Inferior mesenteric veins of the colon
• Intermediate Host of S. mansoni

  Freshwater snail (Biomphalaria)
• Egg Characteristics of S. mansoni

  • Oblong-shaped
  • Contains a developed miracidium
  • Has a large lateral spine
  • “MLS” = Mansoni Lateral Spine
• Adult Characteristics of S. mansoni

  • Smallest Schistosoma species
  • Has prominent/coarse integumentary tuberculation
  • Ovary is found at the anterior half of the body
  • Can lay 190-300 eggs per day
• Additional Notes on S. mansoni

  Found in Africa, Middle East, Caribbean, Brazil, Venezuela, and Suriname
• Egg of S. mansoni


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• Egg of S. mansoni under microscope


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• Adult S. mansoni


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• Adult S. mansoni

  Female and male