TREMATODES

• Schistosoma japonicum


  Oriental blood fluke
• Schistosoma mansoni


  Mansoni blood fluke
• Schistosoma haematobium


  Vesicle blood fluke
• Common names


  • Oriental blood fluke
  • Mansoni blood fluke
  • Vesicle blood fluke
• Schistosoma japonicum


  • Habitat: Superior mesenteric vein
  • Adult integument: Smooth tuberculation
  • Testes: 6-9
  • Eggs in uterus: 50
• Schistosoma mansoni


  • Habitat: Mesenteric vein of large intestine
  • Adult integument: Coarse tuberculation
  • Testes: 6-8
  • Eggs in uterus: 20-40
  • Location of ovary: Anterior half
• Schistosoma haematobium


  • Habitat: Portal vein of urinary bladder
  • Adult integument: Fine tuberculation
  • Testes: 4-5
  • Eggs in uterus: 20-100
  • Location of ovary: Posterior half
• Egg/Ova of Schistosoma japonicum

  Ovoidal, non-operculated, rudimentary or minute lateral spine or knob
• Egg/Ova of Schistosoma mansoni

  Elongated, non-operculated, transparent shell with prominent lateral spine
• Egg/Ova of Schistosoma haematobium

  Elongated, non-operculated, light yellowish brown with distinct terminal spine
• Intermediate hosts


  • Oncomelania hupensi quadrasi (for Schistosoma japonicum)
  • Biomphalaria, Tropicorbis (for Schistosoma mansoni)
  • Bulinus, Biomphalaria, Physopsis (for Schistosoma haematobium)