International Journal of Tropical Insect Science (2008) 28, 88-97

Moushumi Phukan, L.K. Hazarika, Madhumita Barooah, K.C. Puzari and S. Kalita (2008)
Interaction of Dicladispa armigera (Coleoptera: Chrysomelidae) haemocytes with Beauveria bassiana
International Journal of Tropical Insect Science 28 (2), 88-97
Abstract: Morphology of haemocytes of healthy and Beauveria bassiana (Bals.) Vuill.-infected Dicladispa armigera (Olivier) adults was examined in a phase contrast microscope to characterize them into different types. The total haemocyte count (THC) and the differential haemocyte count (DHC) were also estimated. Four types of haemocytes were identified: prohaemocyte, plasmatocyte, granulocyte and spherulocyte. In the healthy adults, the THC varied between 5055 and 5950/mm³, out of which 85% were composed of granulocytes and plasmatocytes. As B. bassiana infection time increased, THC decreased and was associated with a significant concomitant increase in granulocytes and a decrease in prohaemocytes. Granulocytes reacted in various ways, including disintegration of the plasma membrane, formation of fine pseudopod-like cytoplasmic extensions and finally, clumping of cells. Granulocytes and plasmatocytes were the predominant haemocytes involved in all the cell-mediated defence reactions.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Lakshmi K. Hazarika

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
general biology - morphology - evolution
Research topic(s) for beneficials or antagonists:
resistance/tolerance/defence of host

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Dicladispa armigera
Beauveria bassiana (entomopathogen)	Dicladispa armigera