Concomitant Primary Infection of the Midgut Epithelial Cells and Secondary Infection of Tracheal Cells of Helicoverpa armigera by Ha NPV (Nuclear Polyhedrosis Virus)
نویسندگان
چکیده
A study of histopathological changes due to the infection of Helicoverpa armigera Nuclear Polyhedrosis Virus (HANPV) in the third instar larvae of H. armigera at 24, 48, 72 and 96 hour interval was carried out in the laboratory. The histopathalogical sequential changes in the post infected H. armigera revealed the presence of infected area in the midgut epithelium at 72 hpi (hour post infection) suggesting that the midgut was the most common route of entry for the virus into an insect host. However, 96 hpi preparations showed virogenic tracheal epidermal cells suggesting that these cells were probably the secondary site of infection.
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