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Research note

Table II.

Counts of P. daubneyi rediae and cercariae in three species of lymnaeids at day 65 p.e. at 20 °C (experiment B).

Parameters G. truncatula L. neotropica L. v. ventricosa
Number of preadult snails at exposure 50 50 50
Number of surviving snails at day 30 p.e. (survival rate %) 37 (74.0) 45 (90.0) 26 (52.0)
Number of snails containing cercariae (prevalence %) 19 (51.3) 22 (48.8) 13 (50.0)
Number of free rediae* 34.4 (5.1) 26.2 (8.6) 39.5 (6.2)
Number of free procercariae* 81.4 (21.0) 62.5 (15.6) 99.5 (29.9)
Number of free cercariae* 142.4 (32.3) 110.2 (27.4) 177.3 (52.9)
Total cercarial production* 223.8 (27.3) 172.7 (21.8) 276.8 (37.1)
*

Mean value (S.D.).

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