SOME EFFECTS OF UNINFECTED LABORATORY-REARED TSETSES (GLOSSINA-MORSITANS-MORSITANS WESTW) (DIPTERA-GLOSSINIDAE) ON HOST-RABBITS

  • 1 January 1978
    • journal article
    • research article
    • Vol. 35  (4) , 345-355
Abstract
Rabbits (Flemish giant x French lop-eared) exposed to 300-500 tsetses (G. morsitans morsitans) a day, 2 or 3 days/wk, did not show significant differences from littermates receiving no exposure, with respect to weight changes, hematocrits, red and white blood cell counts or whole blood clotting times. In other rabbits, the same daily exposure, 6 days/wk, resulted in sharp decreases in hematocrit levels and in some changes in weights, but no change in citrated plasma thrombin times. Rabbit hematocrit levels correlated negatively with estimated weekly blood loss. Weights and hematocrits of most rabbits exposed to 1200-1500 flies on a single occasion were not affected. Following heavy exposure, ears were cold and blood-letting difficult, indicating the possibility of arteriolar vasoconstriction.

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