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.
|Date of snail
|Number of cercariae
in three days
|Sites i and ii
by B. bufo
|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
frogs and newts
|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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