Table 1. Predatory activity of C. novaezelandiae on free larvae of S. mansoni.

Parameter	Value	Miracidia	Cercariae
Volume of watera (mL)	50	44.3±8.5	50.0±7.0
	100	31.3±3.8	54.3±9.3
	500	11.3±1.2	33.3±6.5
Number of organisms (miracidia or cercariae)b	100	42.0±13.1	42.0±6.2
	200	80.7±9.3	58.7±16.3
	300	94.0±12.8	72.3±8.7
Number of C. novaezelandiaec	10	35.0±7.9	56.7±4.2
	20	58.7±6.5	72.3±3.5
	30	89.7±6.8	90.0±2.6
	40	82.3±3.5	90.7±2.5
	50	88.3±1.5	95.3±1.5
	60	96.0±2.0	100.0
	70	100.0	-

^a: using 10 C. novaezelandiae and 100 organisms; ^b: using 10 C. novaezelandiae and 50 mL water; ^c: using 100 organisms and 50 mL water.