Larval mortality during the larval growth stage by hatchery against a) water temperature (°C) at the end point of broodstock conditioning b) number of broodstock oysters c) salinity and d) where algal paste was or was not used as part of the broodstock diet. For explanation of hatchery codes see Figure 1. Data are presented as a box-whisker plot when each hatchery is represented by a single value on the x-axis.