Dr. M. A. Subramanian, former Principal, Sree Amman Arts and Science College, Chittode, Erode, Tamil Nadu, previously worked as Reader P G and Research Department of Zoology, Chikkaiah Naicker College, Erode. He has thirty-five years of teaching experience, and over 23 years of research experience in the fields of Entomology, Toxicology, Ecophysiology, Histology and Environmental Biology. He has published more than 40 research papers in reputed national and international journals and has guided II M.Phil. scholars and 8 Ph.D. scholars. He is Associate Editor, Fraseria, South Asian Bulletin of Odonatology (affiliated to Odonatologica, Netherlands). He is the author of the books Biophysics: Principles and Techniques and Toxicology: Principles and Methods.