Susceptibility and transovarial transmission of dengue virus in Aedes aegypti: a preliminary study of morphological variations.
Southeast Asian J Trop Med Public Health
;
2003 ; 34 Suppl 2(): 131-5
Article
in English
| IMSEAR
| ID: sea-34409
ABSTRACT
Two types of morphological variants, the dark form and the pale form of Aedes aegypti were selected from wild-caught mosquitos. Ascertaining any differences between the two forms for susceptibility to dengue type 2 virus was performed by oral feeding. Transovarial transmission was further determined from the progenies of infected mosquitos by tracing them to the third generation. Significant differences in oral infection were not observed between these two forms of mosquitos. Transovarial transmission was found in the progenies of infected females of both forms, and the filial infection rates (FIRs) were also similar. However, there was a trend of declining FIR in the later generation. In order to achieve an accurate result, more tests are currently underway to obtain a larger number of progeny. Although the FIR was low in the present study under laboratory conditions, higher rates might occur under field conditions, which could have a significant impact on the maintenance of dengue viruses in nature.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Reproduction
/
Thailand
/
Female
/
Dengue Virus
/
Host-Pathogen Interactions
/
Animals
Country/Region as subject:
Asia
Language:
English
Journal:
Southeast Asian J Trop Med Public Health
Year:
2003
Type:
Article
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