highly significantP < 0.0001
Although interfamily variation was highly significant at both temperatures (all P < 0.0001, Table 2 ), the amount of variation at 7°C appeared to be greater overall than at 14°C (average range in time to hatching = 2.4 days at 14°C vs. 6.3 days at 7°C; stage at hatching = 0.87 vs. 1.6; size at hatching = 0.77 vs. 1.04).