Parasitology Research

, Volume 80, Issue 3, pp 177–181 | Cite as

Dynamics of host blood effects inGlossina morsitans sspp. infected withTrypanosoma congolense andT. brucei

  • Reardon O. Olubayo
  • Steve Mihok
  • Eli Munyoki
  • Leonard H. Otieno
Original Paper


The pattern of infection inGlossina morsitans morsitans andG. m. centralis membrane-fed on eland, buffalo or goat blood mixed withTrypanosoma congolense orT. brucei was studied from day 1 to day 10. Tsetse were initially permissive vectors, with most flies harbouring infections of 104–105 parasites on day 3. However, after a second blood meal on day 3, flies cleared many infections withG. m. morsitans clearing more infections thanG. m. centralis. Infective feeds of goat blood consistently increased final infection rates by limiting the number of infections lost between days 3 and 6. In further experiments withG. m. morsitans only, this effect was replicated by feeding flies on erythrocytes but not on serum. These results suggest that compounds from some mammalian erythrocytes match the target specificity ofG. m. morsitans midgut lectins and, hence, have a protective effect on trypanosome establishment in the fly.


Protective Effect Infection Rate Target Specificity Blood Meal Host Blood 
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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Reardon O. Olubayo
    • 1
  • Steve Mihok
    • 1
  • Eli Munyoki
    • 1
  • Leonard H. Otieno
    • 1
  1. 1.International Centre of Insect Physiology and EcologyNairobiKenya

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