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Table 12 Morphometrics of Halomonhystera vandoverae, Snake Pit, st. 4330

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

Character Males Females
n Min–max Mean S.D. C.V. n Min–max Mean S.D. C.V.
L 13 472–882 647 111 17.2 11 685–1010 790 110 13.9
a 13 31.1–40.5 36.0 2.99 8.31 11 31.4–38 34.6 2.53 7.32
b 13 4.56–6.74 5.85 0.72 12.3 11 4.75–7.71 6.38 0.81 12.7
c 13 4.50–10.4 8.68 0.82 9.45 11 8.15–10.2 9.16 0.72 7.87
c′ 13 3.78–5.35 4.57 0.51 11.2 11 5.69–7.00 6.32 0.41 6.43
V  % 11 65.0–71.4 68.1 2.13 3.13
Body diameter at level of cephalic setae 12 4.50–6.50 5.30 0.58 11.0 10 5.00–7.00 6.10 0.57 9.31
Body diameter at level of amphideal fovea 12 8.00–9.50 9.58 0.70 7.32 11 10.0–12.0 11.0 0.65 5.94
Body diameter at level of nerve ring 13 13.5–18.0 15.2 1.26 8.35 11 15.0–19.5 17.0 1.21 7.12
Body diameter at level of cardia 13 14.0–20.5 16.2 1.71 10.6 11 16.5–21.0 18.5 1.29 7.01
Midbody diameter 13 14.5–23.5 18.2 2.55 14.0 11 20.0–26.0 22.8 1.92 8.41
Anal body diameter 13 15.0–19.5 16.9 1.60 9.45 11 13.5–18.5 15.5 1.59 10.3
Distance from cephalic apex to anterior rim of amphideal fovea 12 9.00–12.0 10.9 1.11 10.2 9 11.5–14.5 13.1 1.01 7.77
Distance from cephalic apex to postamphideal setae 9 14.0–22.0 17.9 2.94 16.4 7 17.0–21.0 19.0 1.63 8.59
Spicule’s length along arch 13 24.2–32.0 28.7 2.30 7.99
  1. Measures in µm except for ratios