The last instar larvae were treated with sub-lethal concentrations of paper mill effluent (PME) for 5 days. PME inhibits the synthesis of neurohormones in the A-type cells of the medial group of the brain and in the intrinsic neurosecretory cells of the corpora cardiaca. PME also causes histomorphological changes in the corpora allata and suppress protease activity of the midgut. These findings suggest that various metamorphic and intermediary metabolic alterations caused by the PME treatment is modulated by the changes in the synthesis and secretion of the neurohorraones of the cephalic neurosecretory complex.


CC BY-SA 4.0 NL ("Naamsvermelding-GelijkDelen")

Societas Internationalis Odonatologica

R.J. Andrew, E. Balmik, & L. Kodhe. (2006). Effect of paper mill effluent on the cephalic neurosecretory and midgut protease activities in the last instar larva of Bradinopyga geminata (Rambur) (Anisoptera: Libellulidae). Odonatologica, 35(3), 225–231.