期刊名称：Beni-Suef University Journal of Basic and Applied Sciences
印刷版ISSN：2314-8535
电子版ISSN：2314-8543
出版年度：2017
卷号：6
期号：4
页码：391-393
DOI：10.1016/j.bjbas.2017.05.003
语种：English
出版社：Elsevier
摘要：AbstractSchistosomiasis is a parasitic disease transmitted to man and different warm blooded animals by means of snails. Great effort has been made to control the transmission of the disease by many strategies. Consequently, the utilization of particular molluscicides is viewed as a standout amongst the best measures for molluscs control. Recently, microbial pathogen used as non-traditional molluscicides which have attracted significant research attention due to the increasing, worldwide development of resistance to chemical molluscicides in molluscs populations. The present work aimed to study the molluscicidal impacts of eleven isolates ofBacillus thuringiensiswhich were isolated from soils of six Egyptian governorates towardBiomphalaria alexandrinasnails. Results showed that,B. thuringiensisprovides an effective biological control agent againstB. alexandrinasnails. Out of the tested isolates, four isolates; Qalyubia, Asyut 1, Qena and North Sinai 2 isolates show high-level molluscicidal activity. The obtained results indicated that LC50and LC90values were ranged between 133.27–457.74mg/mL and 270.32–781.05mg/mL, respectively. The most noteworthy molluscicidal impact was displayed by Qalyubia isolate which isolated from Qalyubia governorate with mortality rate extended from 20% to100% at five treatment concentrations of 100–500mg/mL. The LC50and LC90values for Qalyubia isolate were 133.27mg/mL and 270.32mg/mL, respectively.
关键词：Biomphalaria alexandrina;Bacillus thuringiensis;Molluscicidal activity;Biological control
