Table 1.
Measurements of females of M. sphaerocephalum on carrot in Vietnam. All measurements are in µm and in form: mean ± SD (range), except for ratio.
| M. sphaerocephalum | ||
|---|---|---|
| Measurement | Population in Hanoi city | Population in Hai Duong province |
| n | 10 | 10 |
| L | 298 ± 13.8 (274–316) | 330.7 ± 14.4 (309.4–360) |
| a | 8.6 ± 0.5 (7.5–9.2) | 9.7 ± 0.6 (8.8–10.6) |
| b | 2.8 ± 0.1 (2.5–3) | 3.2 ± 0.2 (3-3.5) |
| c | 44 ± 9.8 (31–65) | 52 ± 9.2 (39–69) |
| c′ | 0.4 ± 0.1 (0.3–0.5) | 0.4 ± 0.1 (0.3–0.5) |
| VL/VB | 0.8 ± 0.1 (0.7–1) | 0.7 ± 0.1 (0.6–1) |
| V | 94 ± 1 (93–96) | 95 ± 0.4 (94–95) |
| Stylet length | 55 ± 1.6 (53–58) | 51 ± 1.5 (48-54) |
| Anterior end to nerve ring | 82 ± 2.4 (78–85) | 76 ± 2.6 (72–82) |
| Anterior end to end of pharynx | 107 ± 2.7 (104–110) | 103.3 ± 3 (98–109) |
| Anterior end to secretory-excretory pore | 110 ± 4 (105–117) | 108 ± 2.3 (104-113) |
| Max. body diam. | 34.8 ± 1 (33–37) | 34 ± 1.4 (31–37) |
| Body diam. at vulva | 23.2 ± 1.4 (21–25) | 24.3 ± 1.7 (22.2–28) |
| Body diam. at anus | 17.7 ± 1.8 (14.3–19.4) | 18 ± 2 (14.2–22) |
| Tail length | 7 ± 1.3 (4.4–8.8) | 6.6 ± 1.2 (4.8–9) |
| Rst | 12.4 ± 0.5 (12–13) | 12 ± 0.3 (12–13) |
| Roes | 20.7 ± 0.8 (20–22) | 20.4 ± 0.6 (20–22) |
| Rex | 21.5 ± 0.7 (20–22) | 21.6 ± 0.5 (21–22) |
| Rv | 4.8 ± 0.4 (4–5) | 4.3 ± 0.4 (4–5) |
| Ran | 2.2 ± 0.4 (2–3) | 2 ± 0.3 (2–3) |
| Rvan | 3 ± 0.3 (2–3) | 2.2 ± 0.4 (2–3) |
| R | 65 ± 1.6 (63–68) | 64 ± 1.4 (62–66) |
Figure 1:
Mesocriconema sphaerocephalum on carrot in Vietnam. (A) entire body; (B) head region; (C) stylet; (D) anastomoses at mid-body; (E) pharyngeal region; (F) tail region; (G) anastomoses at tail region (Scale bar: 10 µm).
Figure 2:
Phylogenetic tree generated from D2D3 of 28S rDNA sequences based on ML method (TN93 + G model) with 1,000 replications. Sequence of Mesocriconema sphaerocephalum on carrot in Vietnam is in red.