Figure 1.
Position of the video camera above the entrance of each hive.
Figure 2.
Distribution of the honeybees caught by Vespa velutina.
The data are pooled for H1 and H2. Boxes, plain line, dashed lines, and open circles represent 50% of all values, medians, 1.5 interquartile range and extreme values respectively. Sample sizes for each location are presented in parentheses.
Figure 3.
Relation between the number of Vespa velutina and the number of Apis mellifera caught.
The data are pooled for H1 and H2. Predicted values fitted with the GLM model (plain line) with 95% confidence interval (dash lines).
Figure 4.
Variation of the number of Vespa velutina during a) the day and b) the season.
The data are pooled for H1 and H2. Predicted values fitted with the GLM model (plain line) with 95% confidence interval (dash lines).
Table 1.
Summary of the GLM (Poisson family) of the diurnal and seasonal variation of Vespa velutina predation pressure.
Figure 5.
Variation of the number of flying Apis mellifera during a) the day and b) the season.
The data are pooled for H1 and H2. Predicted values fitted with the GLM model (plain line) with 95% confidence interval (dash lines).
Table 2.
Summary of the GLM (Poisson family) of the diurnal and seasonal variation of Apis mellifera flying activity during Vespa velutina predation.
Figure 6.
Number of honeybees caught by Vespa velutina during a) the day and b) the season.
For (a), H1 data are in bold line/dark grey dots and H2 data are in thin line/light grey dots. For (b), the data are pooled for H1 and H2. Predicted values fitted with the GLM model (plain line) with 95% confidence interval (dash lines).
Table 3.
Summary of the GLM (Poisson family) of the diurnal and seasonal variation of the number of honeybee captures.