Figure 1
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 | – |