Prof. Mamidala Estari received his PhD in Zoology from Kakatiya University, Warangal. currently he is working as Assistant Professor in Department of Zoology at Kakatiya University, Warangal. He is the Member of Association of Scientists of Indian Origin in America (ASIOA), USA; Indian Science Congress Association, Calcutta, India; Indian Society for the Study of Reproduction and Fertility (ISSRF), Mumbai, India; Indian Society of Toxicology, Aligarh Muslim University, Aligarh, India.