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Preliminary Screening of Leaves of Leucas Aspera and Parthenium hysterophorus against Fresh Water Snail, Indoplanorbis exustus.
2009
Muraleedharan, K. | Murthy, H. K. Siddalinga
Ground fresh green leaves of Lucas aspera and Parthenium hysterophorus were screened for their molluscicidal property at dilutions of 1,000,2,500,5,000 and 10,000 ppm in water against fresh water snail, Indoplanorbis exustus at 6, 24 and 48 hr of exposure. Cent percent mortality of snails was noticed in all dilutions except the first one for each exposure time.
Afficher plus [+] Moins [-]Molluscicidal effect of ether extract of Azadirachta indica (neem)on experimentally reared snails Lymnaea auricularia and Indoplanorbis exustus.
2011
Alam, H. M. | Kaur, Arvinder | Jyoti | Singh, N. K. | Haque , M. | Rath, S. S.
The molluscicidal effect of ether 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. 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, 12, 24, 48,72 and 96 h). The different concentrations of ether extract of neem showed variable effect on adult stages of L. auricularia and I. exustus. 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. I. exustus was found to be more susceptible to methanolic extract of neem as compared to L. auricular.
Afficher plus [+] Moins [-]Description and classification of abnormal cercariae of Schistosoma mattheei and a method of concentration and collection
2003
Van Wyk, J.A. (Pretoria Univ., Onderstepoort (South Africa). Veterinary Tropical Diseases Dept.) | Van Rensburg, L.J.
