Skip to main content

Table 6 Morphometrics of Halomonhystera socialis from the White Sea (detached kelp accumulation)

From: Description of two free-living nematode species of Halomonhystera disjuncta complex (Nematoda: Monhysterida) from two peculiar habitats in the sea

Character Males Females
n Min–max Mean SD CV n Min–max Mean SD CV
L 10 1,875–3,590 2,691 500 18.6 16 2,499–3,841 3,085 382 12.4
a 10 42.5–59.8 51 5.9 11.5 16 34.2–51.4 44.1 5.14 11.7
b 10 6.7–10.6 8.8 1.34 15.3 16 8.5–13.3 10.4 1.57 15.2
c 10 12.3–21 16.4 2.93 17.8 16 12.2–17.8 14.7 1.57 10.7
c 10 3.2–5 4.17 0.68 16.4 16 3.4–9.3 7.27 1.56 21.5
V % 16 81.3–93.8 88.7 2.97 3.35
Distance from vulva to anus 17 37–48 44.9 2.82 6.27
Distance from vulva to anus divided by tail length 15 0.17–0.25 0.21 0.03 13.4
Distance from vulva to anus divided by anal body diameter 17 1.20–1.84 1.61 0.20 12.7
Body diameter at level of cephalic setae 10 11–16 13.5 1.72 12.7 17 11–15 13.5 1.23 9.14
Body diameter at level of amphideal foveas 10 15–23 19.1 2.28 12 17 18–24 20.4 1.58 7.76
Body diameter at level of nerve ring 10 28–45 31.6 8.82 16 17 28–42 34.5 3.97 11.5
Body diameter at level of cardia 10 32–51 39.9 5.45 13.6 17 37–50 42.6 3.86 9.06
Midbody diameter 10 39–63 52.8 8.72 16.5 17 60–80 69.2 6.05 8.75
Anal body diameter 10 33–45 39.7 4.35 10.9 17 25–38 28.3 3.51 12.4
Distance from cephalic apex to anterior rim of amphideal fovea 10 14–23 17.2 2.82 16.4 17 13–23 17.2 2.74 16.0
Distance from cephalic apex to anterior rim of amphideal fovea divided by body diameter at level of cephalic setae 17 1.13–1.44 1.27 0.1 7.58 17 0.93–1.57 1.27 0.16 12.2
Spicule’s length along chord 10 45.9–80 54.4 11.24 20.7
Spicule’s length along arch 10 45.9–96 71.5 15.3 21.4
Length of apophysis of gubernaculum 9 3–6 4.89 1.05 21.6
  1. Measures in µm except for ratios
  2. a body length divided by maximum body diameter; b body length divided by length of the pharynx; c body length divided by tail length; c′ tail length divided by anal body diameter; CV coefficient of variation; calc ratio calculated from a drawing of original publication; c.b.d.—corresponding body diameter; L body length, μm; n number of specimens measured; SD standard deviation; V distance of vulva from anterior end as percentage of body length (%)