Table 2.

(a) Randomized block ANOVA on estimated rate of increase (r′) of cohorts of 80 A. aegypti larvae in response to intraspecific aggregation treatments of A. albopictus. The degrees of freedom for each denominator MS are listed as the second value under ‘df.’ (b) Randomized block ANOVA on A. aegypti rate of increase (r′) within single cups in response to A. albopictus density treatments. The degrees of freedom for each denominator MS are listed as the second value under ‘df.’ Non-integer degrees of freedom result from using Satterthwaite’s Formula for F-tests which uses weighted sums of mean squares as the denominator of the F-test. This formulation is necessary due to an unbalanced design incorporating random effects.

Source	df	F	P
(a) A. albopictus aggregation (across cohort)	4, 4	111.40	0.0002
Block	1, 4	284.44	<0.0001
Treatment × Block	4, 30	0.14	0.9668
Error	30
(b) A. albopictus density (single cup)	4, 4	178.63	<0.0001
Block	1, 71.29	19.69	<0.0001
Treatment × Block	4, 309	0.32	0.8662
Error	309