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Research note

Table 2.

Mean numbers (S.D.) of H. cylindreacea cercariae shed by infected snails or counted in snails after their dissection. Individual values recorded for each parameter between 2001 and 2009 were pooled and were expressed for a single year.

Shed cercariae
Free cercariae
Date of snail
sampling
Number of
infected snails
Number
of snails
Number of cercariae
in three days
Number of
dissected snails
Number
of cercariae
Sites i and ii
only frequented
by B. bufo
January 33 0 - 17 15.1 (9.2)
February 39 7 87.2 (37.8) 29 27.4 (16.9)
March 43 41 215.3 (125.0) 37 55.3 (29.0)
April 17 15 113.5 (82.7) 17 15.6 (11.5)
Sites iii and iv
frequented by
frogs and newts
January 19 0 - 0 -
February 26 0 - 4 3.1 (2.4)
March 22 2 59.8 (32.1) 13 11.4 (8.1)
April 38 23 234.6 (119.4) 35 25.3 (14.0)
May 31 30 457.1 (219.0) 30 43.5 (21.4)

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