Rotifer diversity in most polluted areas (Mandideep and Nayapura) of river Betwa, Madhya Pradesh, India

Abstract

The aim of the study was to find out rotifers diversity in most polluted areas (Mandideep and Nayapura) of river Betwa. Survey and sampling took place between October-2011 to September- 2012, and two major stations and ten sampling sites were selected for the study. Thirty-four rotifers taxa were identified (34 species, 11 genera). In all members of rotifer most dominant species were Brachionus (18 species) and Keratella (06 species). Rotifers reached peak in density in the summer season, while minimum were in winter season. Physico-chemical parameters of river water Temperature, pH, Dissolve oxygen, Biological oxygen demand and Chemical oxygen demand were also measured and the correlation coefficient of physic-chemical parameter with rotifers were established, The rotifer significant relation with pH (0.810), inverse relation with dissolve oxygen (-0.314) while significant relation with BOD (0.430) and COD (0.220). The abundance of rotifers with various physico-chemical indicate that the selected sites station I and II is polluted from various industrial, domestic and municipal waste and the present of rotifers species at this sites shows indicator of pollution.