Title of article :
Nutritional stress of adult female tsetse flies (Diptera: Glossinidae) affects the susceptibility of their offspring to trypanosomal infections
Author/Authors :
K. Akoda، نويسنده , , K. and Van Den Abbeele، نويسنده , , J. and Marcotty، نويسنده , , T. and De Deken، نويسنده , , R. and Sidibe، نويسنده , , I. and Van den Bossche، نويسنده , , P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
5
From page :
263
To page :
267
Abstract :
The epidemiology of tsetse-transmitted trypanosomiasis depends, among other factors, on the proportion of infected flies in a tsetse population. A wide range of intrinsic and extrinsic factors seem to determine the ability of a tsetse fly to become infected and to transmit the parasite. In this paper, we investigated the effect of nutritional stress of reproducing female Glossina morsitans morsitans on the susceptibility of their offspring to trypanosomal infections. Adult female flies that were nutritionally stressed by feeding only once a week, produced pupae with a significant lower weight and offspring with a significant lower fat content as well as a lower baseline immune peptide gene expression. Moreover, infection experiments showed that the emerging teneral flies were significantly more susceptible to a Trypanosoma congolense or Trypanosoma brucei brucei infection than flies emerging from non-starved adult females. These findings suggest that in the field, substantial nutritional stress of adult tsetse flies, as is often experienced during the hot dry season, can increase significantly the vectorial capacity of the emerging teneral flies and thus result in an increased infection rate of the tsetse population.
Keywords :
Glossina morsitans , Trypanosoma congolense , Trypanosoma brucei brucei , starvation , offspring , Vectorial capacity
Journal title :
Acta Tropica
Serial Year :
2009
Journal title :
Acta Tropica
Record number :
1740512
Link To Document :
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