Department of Veterinary Parasitology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, 141004, India
*Corresponding author E mail: arvinderkaur@gadvasu.in
*Part of M V Sc thesis of the first author submitted to GADVASU, Ludhiana
The molluscicidal effect of methanolic extract of different components of neem plant (leaf, seed, bark and whole plant) was evaluated against snails Lymnaea auricularia and Indoplanorbis exustus. The extracts were prepared by cold extraction method by standard protocols. The concentrations of extracts used were 1:10, 1:15, 1:20, 1:25, 1:30 and 1:35 and the results were recorded at different period of exposure time (6 h, 12 h, 24 h, 48 h, 72 h and 96 h). The different concentrations of methanolic extract of neem showed variable effect on adult stages of L. auricularia and I. exustus. A total of 15 snails were used in triplicate in each treated and control group, respectively. It showed positive correlation between exposure time and mortality and negative correlation between dilution and mortality. Among the different extracts, the whole plant extract was most effective followed by seed, leaf and bark against snails L. auricularia and I. exustus. I. exustus was found to be more susceptible to methanolic extract of neem as compared to L. auricularia.
Indoplanorbis exustus, Lymnaea auricularia, Azadirachta indica, Neem, Methanolic extract
