Some aspects of Oreochromis niloticus baringoensis (Trewavas, 1983) fishery assessment and influence of selected water quality parameters in the hot springs of Lorwai Swamp, Baringo, Kenya
Keywords:Condition factor, Hot springs, Length-weight realtionship, Lorwai Swamp, Oreochromis niloticus baringoensis, Water Quality
Water quality has been documented to affect the biology and well-being of fish. This study therefore investigated some aspects of Oreochromis niloticus baringoensis (Trewavas, 1983) fishery assessment and the influence of selected water quality parameters in two hot springs draining into Lorwai Swamp; Lake Bogoria Spa spring and Chelaba spring between the months of July and August, 2018. A total of 445 fish were collected; 244 from Lake Bogoria Spa spring and 201 from Chelaba spring using a seine net. Length Weight Relationship (LWR) was determined using Le Cren’s equation; W=aTLb and Fulton’s condition factor (k) determined using Ricker’s equation; 100W/L3. LWR results indicated an isometric growth for fish from both springs. The mean (± SD) k values for fish in Lake Bogoria Spa spring were 2.02±0.25 for the males, 2.02±0.27 for the females and 2.00±0.26 for both sexes. In Chelaba spring, the mean k values were 2.03±0.21 for the males, 1.97±0.25 for the females and 2.00±0.23 for both sexes. These values indicated that the fish in these hot springs are in a very good condition and healthy status with k values above 1. Some of the selected water quality parameters indicated a positive correlation with the length, weight and Fulton’s condition factor of O. n. baringoensis in the two hot springs.