Table 3 Effects of food density, lake and their interaction on the morphometric indices of Brachionus calyciflorus (F value).

From: Morphological differentiation of Brachionus calyciflorus caused by predation and coal ash pollution

Indexes

Lake

Food density

Lake × Food density

Degree of freedom

2

3

6

Posterior lateral spine length

90.28**

16.54**

4.29**

Anterior medial spine length

96.06**

32.52**

2.65*

Anterior lateral spine length

45.77**

39.71**

5.39**

Distance between anterior medial spines

5.68**

6.16**

4.29**

Distance between anterior lateral spines

7.20**

54.83**

4.44**

Distance between anterior lateral and medial spines

8.40**

57.98**

3.72**

Dorsal sinus depth

72.62**

21.40**

1.69

Head aperture

17.14**

36.93**

1.97

Lorica width

17.48**

5.80**

5.50**

Lorica length

35.69**

18.60**

5.67**

Egg major diameter

17.13**

48.89**

4.31**

Egg short diameter

34.06**

82.45**

3.33**

Egg size

66.07**

46.67**

6.97**

Body size

5.98**

31.11**

5.64**

  1. *P < 0.05; **P < 0.01.