“…Jonnalagadda and Rao ( 1996 ) performed a test with Bellamya disimilis and recorded a 96-h LC 50 value of 1800 μg/L, whereas Oliveira-Filho et al ( 2005 ) found 96-h LC 50 values of 120 and 890 μg/L for Biomphalaria tenagophila juveniles and adults, respectively. Greater values were reported, however, for three freshwater snails by Ellis-Tabanor and Hyslop ( 2007 ), who obtained 96-h LC 50 values of 2300, 1740, and 1350 μg/L for Melanoides tuberculata , Thiara granifera , and Planorbella duryi , respectively, whereas Otludil et al ( 2004 ) reported an LC 50 value of 3230 μg/L for Planorbarius corneus .…”