Melophagus Infestation

Pathogenesis

• Most numerous in autumn and winter

• Located in the superficial layers of the fleece
  • This aids transmission

• Long wooled breeds are most susceptible to infection

• Cause anaemia

• Wool damage
  • Irritation and self-inflicted damage
  • Staining by ked faeces

• Intermediate host for non-pathogenic Trypanosoma melophagium in sheep

Control

• Sheep dipping and spraying

• Shearing to decrease numbers