author(s)
A Thangaraj, S Muralidharan, A Senthil Kumar and M Moorthi

abstract
The rapid industrialization of India is vital for the progress of the Indian economy. At the same time it is pathetic to see that the environmental deterioration is also equally on the rise along with the speed of industrialization due to different pollutions. Among the various industrial effluents, the textile dyeing effluent (TDE) poses a significant threat to the aquatic environment, by altering the pH, BOD, COD, TDS, heavy metals, organic and inorganic to an alarming level which affects the normal life of aquatic organisms. The present study analyses the impact of six significant stations where the major confluents of TDE take place in the area of Pallipalayam, Namakkal District, on the total sugar level in the haemolymph of the different larval stages of dragonfly Bradinopyga geminata. The results indicate that the highest and lowest reduction of total estimated free sugars were evident at ST5 and ST2 respectively.