Vol. 5, Issue 3, Part A (2018)

Fig. 1: Biochemical parameters. Effect of essential oils on the contents of glucose, total protein and urea in Aedes aegypti larvae (Means ± SD, n=6)

Fig. 2: Histopathology of mosquito larvae. Longitudinal section of the midgut of 3^rd instar larvae of Aedes aegypti mosquito (a) Larval midgut of the control group showing well developed brush border (Bb), basal membrane (Bm), digestive cells (DC), food bolus (FB), intestinal epithelial (Int. ep), nucleus (N) and peritrophic membrane (PMb). (b) Midgut of larvae exposed to 500mg/L citronella oil, showing destructive brush border (Bb destr.), degenerative digestive cells (Deg. DC), degenerative basal membrane (Deg. Bm) and cells (Deg. cells), epithelial lyses (Ep lys), degeneration in peritrophic membrane (Degn. PMb), distribution of food bolus (FB) etc.

Fig. 3: Identification of major chemical compositions by GC-MS. (a) citronella oil, (b) eucalyptus oil, (c) patchouli oil, (d) deltamethrin (positive control)