Piscicidal effect of Luffa cylindrica fruit extract on tilapia fingerlings, Oreochromis mossambicus in captive condition

Abstract

Determination of lethal concentration (LC50) value of Luffa cylindrica fruit extract on tilapia, Oreochromis mossambicus in captive condition has been carried out in the present study. Five different concentrations of the extract 8 g l-1, 10 g l-1, 12 g l-1, 14 g l-1 and 16 g l-1 were made by adding the extracts proportionately to the water of the aquarium. The LC50 value of L. cylindrica on O. mossambicus was found as 10.54 g l-1 for 96 hours exposure periods. The dose response mortality and behavioral changes were studied against the fruit extract of L. cylindrica. The analysis of variance between the mortality of the treated fish and the concentration of fruit extract of L. cylindrica extract was found to have a significant (P