Parasites & Vectors

Table 5 Estimated components of the GAMs for the relationships between snail abundance and climatic variables and time, with corresponding effective degrees of freedom (edf), Chi-square statistic, P-values, and percentage of deviance explained by the models (%DE)

From: Transmission of Calicophoron daubneyi and Fasciola hepatica in Galicia (Spain): Temporal follow-up in the intermediate and definitive hosts

Smoothing effect (s) variable	Number of snails
	Total no. collected				No. harbouring C. daubneyi				No. harbouring F. hepatica
	edf	χ ²	P	%DE	edf	χ ²	P	%DE	edf	χ ²	P	%DE
Model 1
Mean temperature	3.88	91.7	< 0.001	89.1	1.0	4.9	< 0.05	77.7	2.9	33.6	< 0.001	79.2
Sampling month	8.82	367.5	< 0.001	89.1	6.77	47.2	< 0.001	77.7	1.0	8.18	< 0.01	79.2
Model 2
Mean relative humidity	3.7	45.7	< 0.001	83.5	1.0	7.2	< 0.01	76.0	1.0	3.3	< 0.01	83.2
Sampling month	8.8	291.8	< 0.001	83.5	6.2	68.8	< 0.001	76.0	5.2	37.8	< 0.001	83.2
Model 3
Global solar radiation	3.9	88.0	< 0.001	91.9	1.9	13.3	< 0.01	71.6	1.7	5.5	0.049	76.8
Sampling month	8.9	331.4	< 0.001	91.9	4.1	33.9	< 0.001	71.6	3.2	22. 8	< 0.001	76.8
Model 4
Accumulated rainfall	3.7	45.9	< 0.001	84.0	1.0	0.3	0.580	71.9	1.0	1.5	0.226	80.4
Sampling month	8.8	370.5	< 0.001	84.0	6.6	65.4	< 0.001	71.9	5.1	35.4	< 0.001	80.4

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