Fig. 3

Number of pupae of Lucilia sericata carrion flies parasitized by Nasonia vitripennis wasps (A) and offspring emerging from these pupae (B). Wasps were collected in bird nests (yellow, n = 90) or next to carrion (blue, n = 90). The box and whisker plots show minimum, maximum, 1st and 3rd quartile, median and mean as asterisk. **: significant difference at p < 0.01 (Mann–Whitney U-test)