4.3.1.2 Larval development
Larval development differed with copper level and route of copper intake, however the latter was barely significant (Table 4.4b). In controls, the percentage of normal larvae midway through development increased from 61% to 83%. In the Diet and Diet + Water treatments, the proportion of normal larvae changed less markedly than in the controls, but the final normal proportion was similar to in the controls, ranging from 66% to 81% (Figure 4.2). In the Water treatment, however, the proportion of normal larvae decreased sharply in both the High Pulse and High Chronic copper levels, to 44% and 50% respectively (Coefficient contrasts; p < 0.02).