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Table 1 Morphometrics of females of Helicotylenchus microlobus

From: Identification and a culture method for a Helicotylenchus microlobus from tomato in China

Character

Populations analyzed in this study

H. microlobus

H. pseudorobustus

Subbotin et al

Mwamula, et al

Subbotin et al. China

Subbotin et al. USA

Yan et al

n

18

12

6

12

15

7

L

679.7 ± 36.2(623.1–741.7)

732.5 ± 31.1(680.0–792.9)

622 ± 55.5(555–687)

739 ± 44.5(657–795)

708.5(600–812)

734 ± 53.2(675–817)

a

26.8 ± 0.7(25.6–28.1)

25.6 ± 0.9(24.4–26.9)

25.9 ± 1.2 (24.7–27.5)

26.6 ± 1.1(24.8–28.5)

25.0(21.4–27.1)

27.2 ± 1.6(25.2929.7)

b

5.3 ± 0.6(4.6–6.3)

5.9 ± 0.3(5.4–6.4)

4.7 ± 0.5 (4.4–5.3)

5.2 ± 0.2(4.7–5.5)

5.0(4.4–5.7)

6.0 ± 0.6(5.4–6.9)

b’

4.7 ± 0.4(4.2–5.5)

5.0 ± 0.2(4.6–5.3)

__

__

__

__

c

33.1 ± 2.8(28.2–38.3)

37.7 ± 3.1(31.9–42.9)

37.9 ± 4.8 (32.9–47)

34.8 ± 2.0(32.1–38.9)

35.4(30.2–41.7)

41.4 ± 4.6(35.1–46.2)

c’

1.5 ± 0.2(1.3–1.8)

1.2 ± 0.1(1.1–1.3)

1.2 ± 0.2 (0.9–1.4)

1.3 ± 0.1(1.2–1.5)

1.3(1.0–1.6)

1.1 ± 0.1(1.0–1.3)

V

62.3 ± 2.3(58.3–68.7)

60.5 ± 1.1(58.6–62)

63.2 ± 1.7 (61.8–66.2)

62.6 ± 1.4(60.4–64.8)

61.8(60.0–63.7)

62.6 ± 1.5(60.3–65.3)

O

41.3 ± 2.4(34.5–47.8)

43.2 ± 3.2(38.5–48.2)

__

__

__

__

m

48.8 ± 3.6(44.8–53.4)

43.7 ± 1.6(41.9–47.3)

__

__

__

__

Stylet length

25.6 ± 1.0(25.3–28.8)

25.2 ± 0.8(24.1–26.6)

25.3 ± 0.4 (25.0–25.5)

28.9 ± 0.7 (27.5–30.0)

27.6(26.0–29.0)

27.3 ± 0.8(26.5–29.0)

Conus length

13.0 ± 0.8(11.8–14.6)

11.0 ± 0.6(10.1–11.9)

__

13.2 ± 0.4 (12.5–14.0)

__

13 ± 0.4(12.5–14.0)

DGO

10.9 ± 0.8(9.3–12.5)

10.9 ± 0.8(9.7–12.0)

__

__

__

__

Anterior to median bulb length

78.0 ± 2.3(74.4–88.2)

81.5 ± 3.2(9.7–12.0)

58.0 ± 1.2 (56.9–59

67.3 ± 2.1(64.7–71.8)

__

87.5 ± 5.5(68.8–93.8)

Anterior end to excretory pore

110.0 ± 5.0(103.6–126.7)

80.9 ± 3.1(76.6–86.6)

100 ± 6.3 (94–109)

128 ± 6.3(114–138)

__

111 ± 3.9(105–115)

Pharynx length

144.3 ± 6.0(134.5–155.6)

123.6 ± 3.9(117.6–128.3)

128 ± 3.1 (125–131)

140 ± 6.0(125–145)

142.5(130.0–152.0)

144 ± 8.7(136–156)

Max body diam

25.4 ± 1.5 (23.7–28.7)

28.6 ± 0.8(27.3–29.6)

23.9 ± 1.7 (22.5–26.5)

27.8 ± 1.2(26.0–30.0)

27.3(25.0–33.0)

26.9 ± 0.9(25.0–27.5)

Vulval body diam

23.5 ± 1.9(20.2–27.5)

__

__

__

__

__

Anal body diam

14.3 ± 1.2(11.5–16.4)

16.0 ± 1.0(14.6–17.9)

14.2 ± 0.6 (14.0–15.0

16.0 ± 1.0(15.0–17.5)

15.8(14.0–17.5)

15.7 ± 0.7(14.0–16.0)

Tail length

20.7 ± 1.5(18.2–23.3)

19.5 ± 1.8(16.9–23.2)

17.0 ± 2.2 (12.5–19.0)

21.3 ± 1.7(19.0–23.0)

20.3(15.0–25.0)

17.9 ± 1.9(15.0–20.0)

No. of tail annuli

10.5 ± 0.7(9.0–12.0)

9.7 ± 0.5(9.0–10.0)

10.6 ± 2.0 (8–13

10.8 ± 1.3(9–13)

11.6(10.0–14.0)

12.9 ± 1.8(9–14)

Vulva to annus distance

235.4 ± 22.1(195.1–281.3)

__

__

__

__

__

Lateral field width

6.5 ± 0.2(6.1–7.0)

7.0 ± 0.6(5.9–8.1)

5.9 ± 0.5 (5.0–6.0)

6.3 ± 0.2 (6.0–7.0)

__

6.4 ± 0.6(5.5–7.5)

Lip width

7.2 ± 0.7(6.3–8.4)

6.9 ± 0.4(6.3–7.8)

6.3 ± 0.2 (6.0–6.5)

6.5 ± 0.2 (6.0–7.0)

__

6.8 ± 0.4(6.5–7.5)

Lip height

4.0 ± 0.6(3.5–5.7)

4.1 ± 0.3(3.7–4.6)

3.7 ± 0.1 (3.5–4.0)

4.2 ± 0.4 (4.0–5.0)

__

4.0 ± 0.3(3.8–4.4)

  1. All measurements are in µm and in the form of mean ± SD (range)
  2. n Number of specimens measured, L Body length, a Body length/greatest body width, b Body length/length from the lips to the junction of esophageal gland and intestine, b’ Body length/ length from the lips to esophageal gland end, c Body length/ tail length, c’ Tail length/tail diameter at anus, V Distance of vulva from the lips × 100/body length, DGO Distance between dorsal esophageal gland opening and stylet knobs, O DGO from stylet base × 100/Stylet length, m Conus length × 100/Stylet length