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Table 3 Morphometrics of Oncholaimus scanicus from the site Lucky Strike

From: Free-living nematode species (Nematoda) dwelling in hydrothermal sites of the North Mid-Atlantic Ridge

Character

Males

Females

n

Min–max

Mean

SD

CV

n

Min–max

Mean

SD

CV

L

13

6275–9820

7935

1112

14.0

7

7150–9875

8715

1049

12.0

a

9

83.7–118

97.8

11.6

12.0

7

80.2–97.4

86.5

8.16

9.43

b

9

9.23–11.1

10.2

0.58

5.70

7

10.1–11.3

10.7

0.47

4.39

c

9

40.5–59.5

47.7

6.44

13.5

7

39.5–54.2

45.7

5.96

13.1

c′

9

2.78–3.69

3.34

0.26

7.78

4

3.12–4.40

3.75

  

V %

–

–

–

–

–

7

66.5–68.7

67.7

0.89

1.31

Body diameter at level of cephalic setae

8

38–43

41

1,85

4.51

3

40.0–44.0

41.7

  

Body diameter at level of nerve ring

9

63–73

68

3.16

4.65

3

63.0–72.0

68.0

  

Body diameter at level of cardia

7

63–78

72.4

5.62

7.76

3

72.0–99.3

81.4

  

Midbody diameter

9

72–87

77.9

4.81

6.10

4

89.0–112

97.8

  

Anal body diameter

9

45–52

47.9

2.37

4.95

4

47.0–55.0

52.1

  

Length of outer labial setae

7

8.30–12.8

10.5

1.35

12.9

3

9.90–10.8

   

Width of amphideal fovea

5

8.40–11.0

10.1

1.06

10.5

2

11.0–11.4

   

Width of amphideal fovea as percentage of c.b.d., %

5

20.8–25

23.4

1.66

 

1

26,1

   

Total stoma length measured along ventral rhabdion

8

40.4–46.5

43.9

2.14

4.88

3

43.0–48.0

45.1

  

Maximal stoma width

8

28–32

29.8

1.28

4.29

3

28.9–32.0

30.5

  

Length of dorsal onch from tip to posterior end of rhabdion

6

21–26

23.5

1.94

8.26

3

25.5–27.5

26.3

  

Length of left subventral onch from tip to posterior end of rhabdion

7

30–37

32.4

2.23

6.77

3

32.0–35.0

33.9

  

Length of right subventral onch from tip to posterior end of rhabdion

5

24.5–28

26

1.27

4.88

3

26.4–29.0

27.8

  

Distance from cephalic apex to ventral pore

8

132–192

166

20.0

11.9

3

169–227

189

  

Spicule’s length along arch

9

83–89

86.1

2.62

4.88

–

–

–

–

–

  1. Measures in µm except for ratios