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Discopersicus hexagrammatus n. sp. (Rhabditida: Tylenchidae), the second species of the genus

Open Access
|Oct 2021

Figures & Tables

Figure 1:

Discopersicus hexagrammatus n. sp. (light microscopy), female (A, C, D, F, G, I-K) and male (B, E, H). A and B: Entire body; C-E: Anterior end; F: Amphidial aperture; G: Pharyngeal region; H: Cloacal region; I: Lateral field; J: Vulval slit; K: Tail. (Scale bars: A, B = 100 µm; C-H, J, K = 10 µm; I = 5 µm).
Discopersicus hexagrammatus n. sp. (light microscopy), female (A, C, D, F, G, I-K) and male (B, E, H). A and B: Entire body; C-E: Anterior end; F: Amphidial aperture; G: Pharyngeal region; H: Cloacal region; I: Lateral field; J: Vulval slit; K: Tail. (Scale bars: A, B = 100 µm; C-H, J, K = 10 µm; I = 5 µm).

Figure 2:

Discopersicus hexagrammatus n. sp. (drawing), female (A, C-F) and male (B, G). A and B: Entire body; C: Pharyngeal region; D: Anterior end; E: Reproductive system; F and G: Tail.
Discopersicus hexagrammatus n. sp. (drawing), female (A, C-F) and male (B, G). A and B: Entire body; C: Pharyngeal region; D: Anterior end; E: Reproductive system; F and G: Tail.

Figure 3:

Discopersicus hexagrammatus n. sp. (scanning electron microscopy), female (A-H, L) and male (I, J, M). A-C: Cephalic region in lateral view (black arrows indicated amphidial apertures); D: Excretory pore in ventral view (white arrow indicated excretory pore); E: Lateral field; F and G: Vulva in ventral view; H-J: Posterior end (black arrow indicating the anus); L: Anus; M: Cloacal aperture.
Discopersicus hexagrammatus n. sp. (scanning electron microscopy), female (A-H, L) and male (I, J, M). A-C: Cephalic region in lateral view (black arrows indicated amphidial apertures); D: Excretory pore in ventral view (white arrow indicated excretory pore); E: Lateral field; F and G: Vulva in ventral view; H-J: Posterior end (black arrow indicating the anus); L: Anus; M: Cloacal aperture.

Figure 4:

Bayesian 50% majority rule consensus tree inferred from D2-D3 expansion segments of 28S rDNA sequences of Discopersicus hexagrammatus n. sp. under the GTR + I + G model. Posterior probabilities more than 50% are given for appropriate clades. Newly obtained sequences in this study are in bold letters.
Bayesian 50% majority rule consensus tree inferred from D2-D3 expansion segments of 28S rDNA sequences of Discopersicus hexagrammatus n. sp. under the GTR + I + G model. Posterior probabilities more than 50% are given for appropriate clades. Newly obtained sequences in this study are in bold letters.

Morphometric data of Discopersicus hexagrammatus n_ sp_ from Iran_

Holotype femaleParatype femalesParatype males
n 8CV7CV
L (µm)705688.0 ± 36.2 (612-734)5.2612.0 ± 8.8 (601-623)1.4
a37.135.3 ± 1.4 (34.0-37.5)4.234.8 ± 2.1 (32.5-38.1)6.1
b6.56.2 ± 0.2 (5.8-6.5)3.613.9 ± 0.2 (13.5-14.3)1.8
c11.010.1 ± 0.6 (9.0-11.0)6.09.4 ± 0.3 (8.8-9.8)4.0
c′9.19.5 ± 0.6 (8.9-10.5)6.78.4 ± 0.5 (7.6-9.0)6.6
V6766.1 ± 0.7 (65-67)1.0
V′7373.4 ± 1.0 (72-75)1.4
Stylet length1010.3 ± 0.3 (10-11)3.010.2 ± 0.3 (10-11)3.3
m (conus/stylet %)3533.6 ± 1.1 (32-35)3.433.1 ± 0.5 (33-34)1.6
Anterior end to valve of median bulb3942.0 ± 2.2 (39-45)5.440.8 ± 2.7 (38-44)6.8
(Anterior end to pharyngeal intestinal junction) Pharynx length108111.0 ± 4.0 (105-117)3.6111.0 ± 3.5 (107-115)3.1
M.B.3637.8 ± 0.9 (36-39)2.436.7 ± 1.3 (35-39)3.8
Anterior end to excretory pore8988.2 ± 1.8 (85-90)2.086.6 ± 1.6 (84-88)1.9
Anterior end to vulva470455.0 ± 22.5 (408-485)4.9
Anterior end to anus641620.0 ± 33.5 (551-658)5.4547.0 ± 7.7 (540-557)1.4
Vulva-anus distance171165.0 ± 13.2 (143-183)8.0
Tail length/Vulva-anus distance0.40.4 ± 0.1 (0.3-0.5)10.5
Body width at midbody1919.5 ± 1.0 (18-21)5.417.6 ± 1.1 (16-19)6.4
Vulval body width1818.0 ± 0.7 (17-19)4.1
Anal body width77.1 ± 0.4 (7-8)3.17.6 ± 0.2 (7-8)2.8
Tail length6468.0 ± 5.2 (61-76)7.664.6 ± 3.0 (61-69)4.7
Spicules16.1 ± 0.5 (16-17)3.4
Gubernaculum5.4 ± 0.2 (5-6)4.2
DOI: https://doi.org/10.21307/jofnem-2021-059 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
Language: English
Page range: 1 - 10
Published on: Oct 26, 2021
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year

© 2021 Manouchehr Hosseinvand, Ali Eskandari, Joaquín Abolafia, Reza Ghaderi, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.