Ichthyofaunal diversity of Mallasandra Lake of Tumakuru, Karnataka State, India
BM Sreedhara Nayaka
The exploitation of the aquatic resources either for social, economical or nutritive purposes is called fisheries. This includes the capture fisheries and culture fisheries as well. In Indian lakes the fish yield levels may not exceeds 0.2% of gross production and energy fixation rate range from 0.0 to 0.68% from available light energy. The Mallasandra Lake is situated 13.6km from centre of Tumakuru city. It lies at 13°19'40''N latitude and 77°1'35''E longitude. This lake is rain fed during monsoon period. Mallasandra lake is comparatively larger with limited catchments with an average rain fall is 630mm and soil in the catchment area is black clay/loamy. At present in the lake fish productivity is considerably low. No much reports are available on this lake. Hence, present study was carried out to assess the ﬁsh diversity status. Fish samples were collected during May 2016 to May 2017. Observation reveled that there are 10 different ﬁsh species are present, among these Oreochromis mossambica, Oreochromis nilotica are the major contributory species and family Cyprinidae is most dominant group. Water temperature (24oC to 26oC) and rainfall was found as major inﬂuential factors for species distribution.
BM Sreedhara Nayaka. Ichthyofaunal diversity of Mallasandra Lake of Tumakuru, Karnataka State, India. National Journal of Multidisciplinary Research and Development, Volume 3, Issue 2, 2018, Pages 15-17