Madras Agricultural Journal
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lacmocyte Changes in Larvae of the Tobacco Caterpillar Spodoptera litura F.. Infected with a Nuclear-Polyhedrosis Virus

Abstract

                                Haemocyte changes in the larvae of Spodoptera litura during the course of a nuclear polyhedrosis are described. Early fourth instar larvae were inoculated with 10 polyhedra each. The number of circulating haemocyles (THC) was significantly higher in infected larvae at 24 hour after inoculation. But at 48, 72, 96 and 120 hour following inoculation the THC was significantly lower than in the corresponding healthy larvae. Further the THC de- creased progressively from 48 hour onwards in infected larvae as against a general increa sing trend in healthy ones.

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