Ecology and Ichthyofaunal Diversity of Mydala Lake of Tumakuru, Karnataka state, India
Shivaraju, Venkateshwarlu M, Shahnawaz Ahmad
The Mydala lake is situated 20km from centre of Tumakuru city towards north east. It lies at 13°18'46''N latitude and 77°11'37''E longitude and water spread area is 370 hectares. The average depth of lake is 3.0 to 4.4 meters along the bund. This lake is rain fed during monsoon period and comparatively larger with limited catchments. The total catchment area of the lake is 62.96sq.km and height is about 13 to 14.8m, average rain fall is 640.27mm and soil in the catchment area is black clay/loamy. At present in the lake fish productivity is considerably low. Not much report is available on this lake. Hence, present study was carried out to assess the ﬁsh diversity status in relation to major hydrological parameters. Fish samples were collected along with water samples from five selected sampling stations of this lake during May 2016 to May 2017. The present study recorded 15 different ﬁsh species and among these Oreochromis nilotica, Oreochromis mossambica, Ctenopharyngodom idella are the major contributory species and family Cyprinidae is the most dominant group. Water temperature and rainfall were found as major inﬂuential factors for species distribution.
Shivaraju, Venkateshwarlu M, Shahnawaz Ahmad. Ecology and Ichthyofaunal Diversity of Mydala Lake of Tumakuru, Karnataka state, India. International Journal of Zoology Studies, Volume 2, Issue 5, 2017, Pages 216-221