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Observation on Hemicriconemoides brachyurus (Loos, 1949) Chitwood & Birchfield, 1957 associated with grass in South Africa Cover

Observation on Hemicriconemoides brachyurus (Loos, 1949) Chitwood & Birchfield, 1957 associated with grass in South Africa

By: E. Shokoohi  
Open Access
|Sep 2022

Figures & Tables

Fig. 1

Hemicriconemoides brachyurus (Loos, 1949) Chitwood & Birchfield, 1957. (A) anterior end; (B) lip region; (C) posterior end including spermatheca; (D) female posterior end; (E) entire female body.
Hemicriconemoides brachyurus (Loos, 1949) Chitwood & Birchfield, 1957. (A) anterior end; (B) lip region; (C) posterior end including spermatheca; (D) female posterior end; (E) entire female body.

Fig. 2

18S rDNA Bayesian tree inferred from known and newly sequenced Hemicriconemoides brachyurus from South Africa.
18S rDNA Bayesian tree inferred from known and newly sequenced Hemicriconemoides brachyurus from South Africa.

Fig. 3

PCA analysis of different populations of Hemicriconemoides brachyurus.
PCA analysis of different populations of Hemicriconemoides brachyurus.

Fig. 4

Discriminant analysis of H. brachyurus and H. promissus.
Discriminant analysis of H. brachyurus and H. promissus.

Measurements of females of Hemicriconemoides brachyurus from South Africa_ All measurements are in μm and in the form: mean ± SD (range), except for the ratio_

LocationCape Town
n8 females
Body Length442.5 ± 21.4 (429-474)
a15.1 ± 0.4 (14.6-15.3)
b4.6 ± 0.2 (4.5-4.8)
c28.5 ± 3.6 (24.3-30.6)
V93.4 ± 0.5 (93-94)
o7.7 ± 0.0 (7.7-7.8)
dgo3.9 ± 0.1 (3.8-4.0)
G143.1 ± 1.6 (41-44)
First lip annuli width4.5 ± 0.5 (3.8-5.0)
Second annuli width2.1 ± 0.5 (1.8-2.8)
Lip region width14.1 ± 0.6 (14-15)
Stylet length54.3 ± 8.6 (49-67)
Stylet knob width7.3 ± 2.3 (5-10)
Stylet knob length3.6 ± 1.0 (3-5)
Metenchium length40.9 ± 1.0 (40-42)
Telenchium length8.8 ± 0.2 (8.7-9.0)
m81.8 ± 0.9 (81-82)
Median bulb to the anterior end61.3 ± 2.3 (60-64)
Nerve ring to the anterior end73.7 ± 0.6 (73-74)
Excretory pore to anterior end102.0 (n =1)
Pharynx101.3 ± 13.3 (92-121)
Body diameter at neck28.7 ± 1.2 (28-30)
Body diameter at mid-body30.3 ± 0.6 (30-31)
Body diameter at anus14.0 ± 1.7 (13-16)
Annuli width4.3 ± 0.3 (4-5)
Vagina6.7 ± 0.6 (6-7)
Anterior genital branch208.0 ± 43.5 (181-273)
Spermatheca length27.5 ± 2.5 (24-30)
Spermatheca width16.0 ± 2.7 (14-20)
First body length432.0 ± 5.2 (429-438)
Second body length425.3 ± 4.0 (423-430)
Body annuli number104.3 ± 1.2 (103-105)
Rst13.0 ± 1.4 (11-14)
Rph22.7 ± 0.6 (22-23)
Rex24.0 (n = 1)
Rv6.3 ± 0.0 (5-7)
Ran5.3 ± 5.0 (5-6)
Rvan3.7 ± 0.6 (3-4)
VL/VB1.3 ± 0.1 (1.2-1.4)
Tail Length15.3 ± 2.3 (14-18)
St%L11.6 ± 0.3 (11-12)
Vulva-anus distance12.3 ±1.2 (11-13)
Vulva anterior end414.5 ± 21.8 (402-447)
Vulva to tail end30.8 ± 5.2 (27-38)
sperm size4.1 ± 0.7 (3.4-5.0)
DOI: https://doi.org/10.2478/helm-2022-0019 | Journal eISSN: 1336-9083 | Journal ISSN: 0440-6605
Language: English
Page range: 210 - 216
Submitted on: Mar 5, 2021
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Accepted on: May 26, 2021
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Published on: Sep 3, 2022
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open

© 2022 E. Shokoohi, published by Slovak Academy of Sciences, Institute of Parasitology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.