Evaluation of Halogenated Coumarins for Antimosquito Properties

Table 2

Mortality of Anopheles arabiensis larvae exposed to coumarins and halogenated coumarins at 4 g/mL and their negative (acetone) and positive (Temephos) controls and adult knockdown activity after 2-minute exposure to halogenated coumarins at 1000 g/mL and their negative (acetone) and positive (DEET) controls against repellence assays (adjusted means and standard errors).

Compound code	Larval mortality	Knocked down
CMRN 1	98.9 ± 3.1^a	100.0 ± 10.9^a
CMRN 2	97.8 ± 3.1^a	96.7 ± 10.9^ab
CMRN 3	1.1 ± 3.1^b	91.1 ± 10.9^b
CMRN 4	98.9 ± 3.1^a	91.1 ± 10.9^b
CMRN 5	97.8 ± 3.1^a	97.8 ± 10.9^ab
CMRN 6	1.1 ± 3.1^b	95.6 ± 10.9^ab
CMRN 7	98.9 ± 3.1^a	81.1 ± 10.9^c
6,7-Methoxy coumarin	3.3 ± 3.1^b	96.7 ± 10.9^ab
Scopoletin	0.0 ± 3.1^b	96.7 ± 10.9^ab
Acetone (control)	0.0 ± 3.1^b	0.0 ± 10.9^d
Temephos	100.0 ± 3.1^a
DEET		0.0 ± 10.9^d

Within each column, compounds not sharing a letter differ significantly ().