Volume 79, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


The size of arthropod vectors may affect their ability to transmit pathogens. Here we test the hypothesis that body size alters the susceptibility of and mosquitoes to dengue virus (DENV) infection and subsequent dissemination throughout the body of the mosquito. After feeding on blood containing known quantities of virus, smaller-sized females were significantly more likely to become infected and to disseminate virus than larger individuals. The effects of size were stronger for and independent of rearing conditions. was more susceptible to DENV infection and had higher virus titer in the body than , yet infected disseminated DENV more readily than infected . These results are consistent with the concept that is a more competent vector of DENV and emphasize the importance of body size in determining adult infection parameters.


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  • Received : 04 Apr 2008
  • Accepted : 28 Jul 2008

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