Observation time

Diatom aldehydes

LC50 (LFL-UFL)

LC99 (LFL-UFL)

χ² (df = 5)

12

HD

1.55 (0.75 - 10.86)

2.86 (1.93 - 48.92)

114.95*

OD

1.44 (1.34 - 1.55)

2.58 (2.37 - 2.89)

7.22 n.s.

DD

0.080 (0.57 - 1.14)

1.89 (1.43 - 3.18)

34.23*

24

HD

1.47 (1.037 - 2.37)

3.04 (2.2 - 6.15)

50.07*

OD

0.88 (0.83 - 0.96)

1.46 (1.31 - 1.70)

5.45 n.s.

DD

0.64 (0.59 - 0.69)

1.26 (1.14 - 1.42)

3.64 n.s.