Open Access
Research Article

Table 2.

Main characteristics of F. hepatica infection in snails maintained to a constant temperature of 20 °C (controls), or subjected every week to a 3-h stay at a mean temperature of 12 °C (TC, temperature-challenged; CS, cercariae-shedding; SD, standard deviation).

Parameters Population (A)
Population (B)
Controls TC snails Controls TC snails
Number of snails at day 30 p.e. 81 81 77 78
Number (frequency in %):
 CS snails 23 (28.3) 49 (60.4)* 14 (18.1) 37 (47.4)*
 NCS snails 35 (43.2) 6 (7.4) 24 (31.1) 9 (11.5)
Prevalence of infection (%) 71.6 67.9 49.3 58.9
Mean growth (SD) of CS snails during experiment (mm) 3.2 (0.8) 3.1 (1.0) 2.3 (0.7) 2.3 (0.9)
Mean length (SD) in days:
 Prepatent period 49.5 (7.7) 48.3 (3.0) 50.2 (8.3) 48.2 (3.1)
 Patent period 30.7 (9.2) 46.2 (10.3)* 24.5 (11.5) 38.7 (8.9)*
Mean number (SD) of mcc shed by CS snails
 Floating mcc 11.5 (5.3) 13.3 (4.8) 7.2 (3.1) 4.5 (1.7)
 Fixed and complete mcc 217.1 (69.3) 304.0 (80.5)* 134.6 (50.4) 214.0 (71.0)*
 Fixed and incomplete mcc 3.2 (2.4) 44.3 (27.2)* 1.5 (0.7) 30.6 (11.4)*
Total mcc production:
 Per CS snail 231.8 361.6 143.3 249.1
 Per snail at day 30 p.e. 58.5 218.7 26.0 118.1
*

Significant differences between temperature-challenged snails and controls.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.