Skip to main content

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