Morphological and molecular characterizations of Pratylenchus coffeae infecting Ming aralia and coffee in Vietnam
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Apr 23, 2024
About this article
Article Category: Research Article
Published Online: Apr 23, 2024
Page range: 76 - 84
Received: Jul 01, 2023
Accepted: Jan 19, 2023
DOI: https://doi.org/10.2478/helm-2024-0004
Keywords
© 2024 H. D. Nguyen et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Measurements of Pratylenchus coffeae from Ming aralia and coffee in Vietnam_
| Characters | Pratylenchus coffeae ( |
|||
|---|---|---|---|---|
| Host plant | Ming aralia | Coffee | ||
| Sex | Female | Male | Female | Male |
| n | 10 | 10 | 10 | 10 |
| a | 23 ± 2.4 (22 – 28) | 28.6 ± 1.2 (27.6 – 30.7) | 27 ± 1.4 (25.5 – 29.1) | 31 ± 2.9 (25.9 – 36.4) |
| b | 6.0 ± 0.3 (5.7 – 6.5) | 5.9 ± 0.2 (5.7 – 6.2) | 6 ± 0.3 (5.7 – 6.5) | 6 ± 0.3 (5.7 – 6.4) |
| b′ | 4.2 ± 0.2 (4.1 – 4.5) | 4.2 ± 0.2 (4 – 4.6) | 4 ± 0.2 (3.8 – 4.4) | 4.2 ± 0.2 (3.8 – 4.5) |
| c | 18.8 ± 0.5 (18.3 – 19.6) | 19.5 ± 1.4 (18.3 – 21) | 19.2 ± 1.4 (17.4 – 22) | 20 ± 1.5 (18.5 – 23) |
| c′ | 1. 9 ± 0.1 (1.7 – 2.1) | 2.3 ± 0.2 (2 – 2.7) | 2.2 ± 0.2 (1.9 – 2.5) | 2.1 ± 0.2 (1.9 – 2.4) |
| Body length (L) | 519 ± 25 (485 – 550) | 497 ± 24 (476 – 542) | 473 ± 28 (440 – 531) | 494 ± 26.7 (454 – 533) |
| V | 79 ± 3 (74 – 82) | – | 80 ± 2 (78 – 84) | – |
| Stylet length | 15.9 ± 0.2 (15.7 – 16.1) | 14.5 ± 0.3 (13.9 – 14.9) | 15.9 ± 0.4 (15.3 – 16.6) | 14.7 ± 0.8 (13.8 – 16) |
| Dorsal gland opening from stylet base (DGO) | 3.2 ± 0.7 (2.2 – 3.9) | 3.3 ± 0.3 (2.9 – 3.6) | 2.9 ± 0.4 (2.3 – 3.3) | 3.1 ± 0.4 (2.5 – 3.7) |
| Anterior end to valve of median bulb | 56 ± 3 (52 – 58) | 53 ± 1.4 (52 – 55) | 50 ± 3.4 (46 – 58) | 52 ± 1.8 (49 – 55) |
| Anterior end to nerve ring | 70 ± 3.3 (64 – 72) | 65 ± 3 (63 – 69) | 61 ± 4 (57 – 70) | 64 ± 2 (61 – 68) |
| Anterior end to secretory-excretory pore | 80 ± 2 (78 – 82) | 76 ± 3 (72 – 79) | 75 ± 5 (69 – 81) | 76 ± 2 (72 – 79) |
| Anterior end to pharyngo-intestinal junction | 87 ± 5 (79 – 91) | 84 ± 2 (81 – 87) | 79 ± 5 (74 – 89) | 82 ± 4 (74 – 86) |
| Anterior end to end of pharyngeal gland | 123 ± 8 (109 – 129) | 118 ± 6 (108 – 124) | 117 ± 5 (109 – 123) | 119 ± 7 (109 – 127) |
| Pharyngeal gland overlap | 36 ± 4 (30 – 39) | 34 ± 5 (27 – 42) | 38 ± 4 (31 – 44) | 37 ± 4 (31 – 43) |
| Max body diam. | 22 ± 1.5 (20 – 24) | 17.4 ± 0.7 (16.3 – 18.5) | 17.5 ± 1 (16.2 – 19.3) | 16.1 ± 2.1 (13.6 – 19.6) |
| Vulval body diam. | 19.9 ± 1 (19 – 22) | – | 16.3 ± 1.4 (14.4 – 19.4) | – |
| Post-uterine sac (PUS) | 21 ± 4 (16.4 – 26) | – | 27 ± 2 (24 – 30) | – |
| Anal body diam. | 14.7 ± 0.3 (14.3 – 15) | 11 ± 0.4 (10.3 – 11.6) | 11.3 ± 0.4 (10.7 – 12) | 11.4 ± 1 (10.1 – 12.9) |
| Tail length | 28 ± 2 (25 – 30) | 26 ± 2 (23 – 30) | 25 ± 2 (21 – 27) | 24 ± 2 (21 – 28) |
| Spicule length | – | 18.4 ± 1 (17.2 – 19.9) | – | 17.8 ± 1 (16.1 – 19.3) |
| Gubernaculum length | – | 4.5 ± 0.3 (3.9 – 4.8) | – | 4.3 ± 0.6 (3.5 – 5.5) |