Uneingeschränkter Zugang

First Report of Criconema demani from Russia


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Figure 1

Light micrographs of Criconema demani. (A) Entire female and (B) Tail region.
Light micrographs of Criconema demani. (A) Entire female and (B) Tail region.

Measurements and ratios of 15 females of Criconema demani from the Pskov region of Russia, and their comparison with those from the literature. All measurements are in µm.

Morphological characters This study Brzeski (1998) Crozzoli and Lamberti (2002) Choi and Geraert (1994)
Body length 372.76 ± 37.5 (305–454) 380–530 331–386 381–437
Body width 31.9 ± 2.2 (28.7–35.5) 34–44
Esophagus length 98.91 ± 5.6 (85–109) 99–110 95–99
First annulus diameter 15.17 ± 1.1 (13.8–16.9) 13–14
Stylet length 64.9 ± 3.2 (60–68.8) 59–84 65–72 66.2–77.7
Tail length 32.2 ± 5.4 (25–42.9) 24–49 28–33
Annule numbers
R 70.8 ± 2.3 (65–74) 63–77 62–66 61–68
Rst 13.9 ± 0.9 (12–16) 12–14
Roes 18.8 ± 1.1 (17–21) 17–20 17–19
Rex 20.9 ± 1.4 (19–23) 19–24 19–21 19–22
RV 11.7 ± 1.2 (10–13) 11–17 12–14 11–13
RVan 3.42 ± 0.5 (3–4) 3–5 3–4 4–5
Ran 8.04 ± 0.8 (7–9) 7–12 9–10 6–8
RB 5.3 ± 0.5 (4.5–6) 5–8
Percentages
V 84.9 ± 1.2 (82.7–87) 84–88 84–86 84.1–87.2
St % L 17.2 ± 1.3 (15.5–19.7) 14–18
Ratios
a 11.5 ± 1.4 (8.9–13.2) 9–13 8.8–10 10.2–11.7
b 3.8 ± 0.4 (3.3–4.6) 3.8–5 3.4–4 3.6–4.4
c 12.8 ± 1.9 (10.3–15.8) 9–16 11–13 12–16.5
VL/VB 1.71 ± 0.2 (1.4–2.0) 1.6–2.2 1.6–1.8
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