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Table 1 Repeatabilities of centroid size and landmark positions in the Wabasso population of Drosophila melanogaster. Centroid size is in units of μm. Point locations are in units of mean centroid size/1000.

From: Automated measurement of Drosophila wings

    

Percent of within-sex variance

    

Over repeated

imaging

Over fitting,

models

Trait

Differencea

|♀-♂|

Among fly varianceb

% Fly

% Operator

 

% Fly

Centroid size

 

164.83

517.21

96.2

0.5

 

99.5

Landmark:

1

3.32

52.67

90.2

1.1

***

97.4

 

2

6.83

22.54

91.1

0.0

 

96.7

 

3

4.18

21.78

89.5

0.3

*

96.7

 

4

11.68

75.15

91.6

0.9

***

96.1

 

5

3.44

14.32

46.9

2.4

*

72.6

 

6

3.16

11.71

75.7

3.2

***

94.6

 

7

4.60

39.82

94.3

0.2

**

97.8

 

8

2.19

43.83

95.2

0.2

***

98.0

 

9

1.42

24.57

90.6

0.9

***

96.3

 

10

2.61

26.74

91.7

0.4

***

97.5

 

11

2.17

7.67

64.5

1.6

***

78.7

 

12

4.08

12.39

65.8

0.6

***

71.0

Landmark total

  

355.17

86.0

0.8

 

92.7

  1. * P < 0.05; ** P < 0.01; *** P < 0.001. aDistance between mean locations of each point. All differences between the sexes are significant at P < 0.0001. bAll among fly differences are significant at P < 0.0001. Point variances are the sums of variance components in the x and y dimensions.