STUDY FOR THE STANDARDIZATION OF QUANTITATIVE TEST OF THE SUSCEPTIBILITY OF ONCOMELANIA SNAILS TO SODIUM PENTACHLOROPHENATE

Abstract

To establish the standardized technic for testing the susceptibility of Oncomelania snails to sodium pentachlorophenate, 4 methods (original plate method, modified plate method, routine immersion method and modified immersion method) were examined experimentally in the laboratory. The modified immersion method was recommendable. Also, the length of time during which snails are in contact with chemicals, the temperature at which snails are in the solution, the amount of the solution per snail during the test, and the time of examining snails for their death were also standardized.