Table 3 Enzymatic activity of tested photosensitizers against Anopheles pharoensis at different immature aquatic stages.

Rose Bengal

Larvae I

4.86 ± 0.07^e

4.95 ± 0.08^c

0.53 ± 0.02^e

0.46 ± 0.04^e

Larvae II

5.14 ± 0.08^d

5.33 ± 0.04b^c

0.68 ± 0.06^d

0.61 ± 0.03^d

Larvae III

5.41 ± 0.08^c

5.51 ± 0.11ab^c

0.89 ± 0.02^c

0.79 ± 0.03^c

Larvae IV

5.69 ± 0.06^b

5.83 ± 0.06a^b

1.06 ± 0.06^b

0.92 ± 0.04^b

Pupae

6.21 ± 0.17^a

6.18 ± 0.64^a

1.24 ± 0.06^a

1.11 ± 0.06^a

Methylene blue

Larvae I

4.64 ± 0.07^e

4.77 ± 0.06^c

0.67 ± 0.04^d

0.58 ± 0.04^d

Larvae II

4.83 ± 0.07^d

4.96 ± 0.08^c

0.77 ± 0.05^d

0.65 ± 0.02^d

Larvae III

5.14 ± 0.05^c

5.71 ± 0.05^b

1.14 ± 0.05^c

1.08 ± 0.04^c

Larvae IV

5.55 ± 0.08^b

6.0 ± 0.10^a

1.14 ± 0.05^b

1.08 ± 0.04^b

Pupae

5.90 ± 0.07^a

6.15 ± 0.07^a

1.32 ± 0.04^a

1.20 ± 0.02^a

Control

(dist. water)

Larvae I

5.31 ± 0.09^d

5.58 ± 0.10^d

0.43 ± 0.05^d

0.39 ± 0.03^d

Larvae II

5.51 ± 0.07^d

5.75 ± 0.05^d

0.56 ± 0.06^d

0.52 ± 0.05^c

Larvae III

5.74 ± 0.11^c

5.98 ± 0.04^c

0.74 ± 0.05^c

0.69 ± 0.04^b

Larvae IV

5.97 ± 0.06^b

6.36 ± 0.10^b

0.90 ± 0.05^b

0.79 ± 0.04^b

Pupae

6.54 ± 0.07^a

6.75 ± 0.07^a

1.05 ± 0.07^a

0.96 ± 0.06^a