Table 4. Factorial ANOVA results of comparison of larval stage duration between females and males reared on Betula pendula leaves with low and high concentrations of surface lipophilic compounds.

Effect	df 1	df 2	F	P
Treatment	1	150	30.15	>0.001
Sex	1	150	61.21	>0.001
Sex*treatment	1	150	0.18	0.674