Schistosoma . species (Blood Fluke) – Adult

  • Disease: Schistosomiasis
  • Habitat in human: Veins of the intestine ( S. mansoni & S. japonicum) or bladder (S. haematobium)
  • Definitive host: Human
  • 01 intermediate host only: Snails
  • Diagnosis of infection: Microscopic examination of faeces (S. mansoni & S. japonicum) or urine (S. haematobium) for eggs
Morphological Features
  • Body is worm like- elongated and cylindrical
  • Sexes are separate
  • Female longer and more slender than male; vary from 7 – 26 mm depending on species
  • Intestinal caecae reunite after bifurcation to form a single canal
  • Shape: Worm-like elongated cylindrical bodies
  • Both oral and ventral suckers present in an anterior position of body
  • Intestinal caeca reunite after bifurcation to form a single canal
  • Male has a groove called the gynecophoral canal (arrow) – female is held within this canal