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Table 4 Morphometrics of Oncholaimus scanicus from the site Lost City, summarized 2002, 2003, 2005

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

8715–12,380

10,455

1313

12.6

8

8990–13,825

11,245

1501

13.3

a

11

92.5–117

104

8.27

7.92

5

87.3–120

102

13.8

13.6

b

13

7.88–10.9

9.44

0.91

9.64

8

8.41–12.4

9.69

1.25

12.9

c

13

46.8–66.7

57.3

6.15

10.7

6

40.5–64.1

52

9.70

18.7

c′

10

2.36–3.31

2.85

0.35

12.3

5

2.71–3.75

3.20

0.49

15.3

V  %

8

75.5–81.3

79.5

1.80

2.26

Body diameter at level of cephalic setae

11

48–57

52.2

2.57

4.92

4

49.0–56.0

51.7

2.99

5.78

Body diameter at level of nerve ring

11

83.4–95.5

86.9

3.62

4.17

4

87.0–89.0

87.8

0.96

1.09

Body diameter at level of cardia

10

85–105

92.7

5.79

6.24

5

83.0–96.9

91.4

5.42

5.93

Midbody diameter

11

88.6–118

101

8.76

8.65

5

101–124

109

9.08

8.33

Anal body diameter

10

56.7–70

64

3.74

5.85

5

60.0–69.0

63.6

3.78

5.95

Length of outer labial setae

7

8.8–12.6

11

1.51

13.7

2

9.00–12.4

   

Width of amphideal fovea

9

17–21

19.1

1.39

7.27

3

19.2–21.0

   

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

9

27.5–35.6

30.7

2.57

8.36

3

31.6–35.6

   

Total stoma length measured along ventral rhabdion

11

54.5–63.4

59.7

3.2

5.36

4

63.3–68.0

   

Maximal stoma width

11

37.8–42

40

1.31

3.28

4

39.0–43.0

   

Length of dorsal onch from tip to posterior end of rhabdion

11

25.5–36.9

32.3

3.42

10.6

4

30.0–41.0

   

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

11

43.1–54.8

48.1

3.47

7.22

4

49.4–55.0

   

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

10

25.5–38

33.2

3.62

10.9

4

33.8–39.0

   

Distance from cephalic apex to ventral pore

10

145–220

180

27.3

15.2

6

149–228

193

33.0

17.1

Spicule’s length along arch

12

106–128

118

6.69

5.65

  1. Measures in µm except for ratios