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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