DOI: 10.36347/sajb.2015.v03i01.016

Pages: 85-91

Investigations were conducted on physico – chemical characteristics of ten lakes of Telangana State (India) from June 2013 to November 2013. The parameters whish were included were variable temperature, pH, salinity and total dissolved solids were investigated. Temperature is the most important ecological factor influencing the activities of aquatic life organism and other environmental factors and there by the zooplanktons where reduced in these lakes. pH also influences the distribution of fauna in these lakes in different months. It is closely related to the carbon dioxide complex in water. The pH range of ten lakes are 6.5 to 8.4 from June -2013 to November – 2013. The variations may cause stress to the fauna and there by the reduction of faunal species as observed. The salinity varies from vertical to horizontal tidal waves and from top to bottom in a stratified lake. Salinity is an important factor for survival for metabolism and distribution of many species. High salinity was observed from June to September. In the total dissolved solids (TDS) all kinds of solids which are suspended volatile in water sample. The TDS are highly fluctuating in these lakes. Since the tropic status in these lakes is very rich, it will be an economical venture to use Fresh water fish culture or aquaculture. Environment has strong impact on the aquatic fauna, and also this study gives the critical aspects of the fresh water fauna for their survival, as observed.