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Table 1 Reduced efficiency of the phototactic movements after a longer dark period

From: How 5000 independent rowers coordinate their strokes in order to row into the sunlight: Phototaxis in the multicellular green alga Volvox

Period of Darkness Before Illumination

(min)

Spheroids in Area 1*

(%)

SD

(%)

0

100

2.5

0-10

97.3

3.1

10-20

86.5

8.7

20-30

87.7

3.3

30-40

84.5

1.3

40-50

81.5

4.1

50-60

67.2

11.7

60-70

65.2

6.1

70-80

63.8

11.1

80-90

61.9

13.6

  1. *The duration of the photoaccumulation assay was 30 s (n = 3 for each time period). The number of light-adapted spheroids accumulated in area 1 (setup B, Figure 3b) was set to 100%. These light-adapted spheroids correspond to 0 min in the dark. The light intensity during both the light adaptation and the photoaccumulation assay was 2.08 μmol m-2 s-1.