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Table 8 Morphometrics of Prochromadora helenae, Lucky Strike

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

Character Males Females
Holotype n min–max mean SD CV n min–max mean SD CV
L 806 20 626–1010 821 83.1 10.1 14 779–1060 858 74.0 8.63
a 26 20 24.8–35.0 28.7 2.76 9.61 14 23.7–29.8 26.8 1.81 6.75
b 7.53 20 5.91–8.04 7.21 0.55 7.63 14 6.59–8.59 7.40 0.56 7.57
c 7.20 20 6.02–7.62 6.90 0.44 6.38 14 5.85–6.92 6.42 0.37 5.76
c 5.44 19 5.05–6.89 6.02 0.43 7.14 14 5.61–8.72 7.38 0.86 11.7
V % 14 43.2–47.5 44.7 1.16 2.59
Body diameter at level of cephalic setae 9.3 20 8.2–11.2 9.6 0.87 9.05 14 8.7–12.4 9.95 0.97 9.75
Body diameter at level of nerve ring 18.8 20 18.0–22.8 20.3 1.14 5.63 14 17.3–22.7 19.7 1.42 7.19
Body diameter at level of cardia 23.1 20 20.7–24.4 22.3 1.09 4.89 14 22.1–25.0 23.2 0.98 4.23
Midbody diameter 31.0 20 17.9–32.5 28.9 3.63 12.6 14 27.5–35.7 31.9 2.14 6.71
Anal body diameter 20.6 19 17.2–22.0 19.6 1.28 6.52 14 16.2–22.0 18.3 1.69 9.24
Length of cephalic setae 5.6 14 3.7–6.0 5.1 0.75 14.6 7 4.3–5.9 4.84 0.53 11.0
Midpharynx width 8.3 17 5.5–8.3 6.9 0.78 11.3 12 5.1–8.0 6.7 0.87 12.9
Length of terminal pharyngeal bulb 20.9 20 19.0–24.1 21.7 1.64 7.55 14 18.9–26.0 22.7 2.06 9.07
Width of terminal pharyngeal bulb 15.9 20 14.8–17.8 16.0 0.82 5.12 14 14.5–17.9 16.5 0.96 5.82
Spicule’s length along arch 33.0 19 24.0–33.0 27.0 2.37 8.77
Gubernaculum’s length 15.2 6 9.4–15.2 13.0 2.07 15.9
  1. Measures in µm except for ratios