Qualitative analysis of lagerstroemia Speciosa and evaluation of repellant activity and mortality rate of Haemadipsa Sylvestris (Blanchard, 1894)

The largest and toughest species of Indian land leeches is Haemadipsa sylvestris. Leeches are hermaphrodites that live in moist soil, rotting leaves and on the bodies of animals. They are hermaphrodites and can result in bacterial infections that are both painful and secondary. Commonly, chemical medications are used to treat them. The projects objectives include biocontrol of the leech and research on its repellent and mortality rate. The experimental plant contains bioactive component is revealed by the phytochemical analysis. Poomaruthu is the plants common name in Tamil. It is a member of the genus Lagerstroemia and the family Lythraceae and its scientific name is Lagerstroemia speciosa. Crape myrtle is the common name for L.speciosa. The ornamental plant contained steroids, phenolic compounds, amino acids and other chemicals, according to a preliminary phytochemical analysis. The control and standard groups show the mortality of experimental animals within 20 minutes 20.17±2.75d. and 35.00±3.00c the repellent activity with collapsing rate is 95.00±2.00b and 145.00±3.00b. The group IV consisting of L. speciosa bark shows the highest fatal rate within 20.33±2.52d and the disgusting activity is 90.00±3.00c, which is equivalent to the positive control and standard.  The death rate of group VI is 70.00±3.00b and the collapsing rate is 105.00±2.00d. This is will compare to the control, and the standard rate of mortality is subordinate. The overall significant (P<0.05) mortality rates of H. sylvestris is 2.12±4.62 and 2.35±5.13.