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Description of Seinura italiensis n. sp. (Tylenchomorpha: Aphelenchoididae) found in the medium soil imported from Italy

Journal of Nematology
Volume 52 (2020): Issue 1 (January 2020)
By:
Open Access
|Mar 2020

Figures & Tables

Figure 1:

Line drawings of Seinura italiensis n. sp. (A): pharynx; (B): female reproductive system; (C): anterior region; (D): male posterior body region (arrows showing the P1-P4 papillae); (E): lateral lines; (F): female tail; (G): spicule. (Scale bars = A – G = 10 μm).
Line drawings of Seinura italiensis n. sp. (A): pharynx; (B): female reproductive system; (C): anterior region; (D): male posterior body region (arrows showing the P1-P4 papillae); (E): lateral lines; (F): female tail; (G): spicule. (Scale bars = A – G = 10 μm).

Figure 2:

Light photomicrographs of Seinura italiensis n. sp. (A): entire female; (B): entire male; (C): lateral lines; (D, E): anterior region (arrows pointing on position of excretory pore); (F): vulval region; (G): female posterior region showing vulva and post-uterine sac; (H-J): female tail; (K, L): male tail (arrows showing position of caudal papillae); (M, N): spicules (Scale bars = A, B = 20 μm; C-N = 10 μm). exp = excretory pore; a = anus; P1 + P2 + P3 + P4 = caudal papillae.
Light photomicrographs of Seinura italiensis n. sp. (A): entire female; (B): entire male; (C): lateral lines; (D, E): anterior region (arrows pointing on position of excretory pore); (F): vulval region; (G): female posterior region showing vulva and post-uterine sac; (H-J): female tail; (K, L): male tail (arrows showing position of caudal papillae); (M, N): spicules (Scale bars = A, B = 20 μm; C-N = 10 μm). exp = excretory pore; a = anus; P1 + P2 + P3 + P4 = caudal papillae.

Figure 3:

Phylogenetic relationships of Seinura italiensis n. sp. as inferred from Bayesian analysis using the near full-length SSU rDNA under GTR+I+G model. The Bayesian posterior probability (BPP) values more than 50% are given for appropriate clades. New sequence is in bold font.
Phylogenetic relationships of Seinura italiensis n. sp. as inferred from Bayesian analysis using the near full-length SSU rDNA under GTR+I+G model. The Bayesian posterior probability (BPP) values more than 50% are given for appropriate clades. New sequence is in bold font.

Figure 4:

Phylogenetic relationships of Seinura italiensis n. sp. as inferred from Bayesian analysis using the near full-length LSU rDNA D2-D3 expansion segments under GTR+I+G model. The Bayesian posterior probability (BPP) values more than 50% are given for appropriate clades. New sequence is in bold font.
Phylogenetic relationships of Seinura italiensis n. sp. as inferred from Bayesian analysis using the near full-length LSU rDNA D2-D3 expansion segments under GTR+I+G model. The Bayesian posterior probability (BPP) values more than 50% are given for appropriate clades. New sequence is in bold font.

Morphometrics of Seinura italiensis n_ sp_

FemaleMale
CharacterHolotypeParatypesParatypes
n –1515
L478522 ± 36.3 (469 – 590)477 ± 41 (407 – 565)
a30.129.6 ± 1.6 (26.7 – 33.7)31.4 ± 2.1 (28.6 – 36.3)
b6.67.0 ± 0.4 (6.3 – 7.5)6.7 ± 0.5 (5.9 – 7.6)
b′2.82.9 ± 0.2 (2.5 – 3.1)3.1 ± 0.2 (2.8 – 3.5)
c9.09.1 ± 1.3 (7.5 – 12.5)12.5 ± 1.2 (10.5 – 14.6)
c′5.35.6 ± 0.7 (3.9 – 6.5)3.6 ± 0.3 (3.1 – 4.2)
V or T73.472.2 ± 1.5 (69.7 – 75.3)43.2 ± 11.2 (28.1 – 73.9)
Lip region height3.63.4 ± 0.4 (2.8 – 4.1)3.0 ± 0.3 (2.5 – 3.6)
Lip region width7.37.3 ± 0.4 (6.6 – 8.1)6.8 ± 0.6 (5.8 – 8.0)
Stylet length19.820.6 ± 1.6 (18.3 – 23.6)17.4 ± 1.5 (14.5 – 20.1)
Body diam.15.917.7 ± 1.4 (15.7 – 20.9)15.2 ± 1.2 (13.3 – 16.9)
Median bulb width9.610.2 ± 0.6 (9.4 – 11.8)8.7 ± 0.7 (7.5 – 10.2)
Median bulb length16.417.8 ± 1.5 (14.8 – 21.0)15.4 ± 1.0 (13.8 – 17.4)
Median bulb length/diam. ratio1.71.7 ± 0.1 (1.5 – 1.9)1.8 ± 0.1 (1.6 – 2.0)
Excretory pore from anterior end61.967.9 ± 4.9 (57.3 – 74.4)65.5 ± 3.8 (55.2 – 69.1)
Ovary or testis length175.6180.2 ± 35.8 (113 – 232)206.0 ± 54.5 (143 – 340)
Post-uterine sac59.258.8 ± 5.6 (51.1 – 69.3)–
Vulva to anus distance85.186.6 ± 7.4 (74.0 – 95.5)–
Post-uterine sac length/vulva to anus (%)69.668.2 ± 7.7 (58.1 – 85.3)–
Anal (cloacal) body diameter10.110.5 ± 0.7 (9.6 – 12.4)10.7 ± 0.6 (9.6 – 11.6)
Tail length53.158.3 ± 6.8 (43.6 – 72.0)38.5 ± 4.5 (29.3 – 45.2)
Spicules (curved median line)––14.5 ± 1.0 (12.7 – 15.8)
Spicules (chord)––14.1 ± 0.8 (12.6 – 15.0)
Hemizonid from anterior end90.784.4 ± 4.0 (77.6 – 91.8)81.9 ± 4.5 (73.1 – 89.7)
Pharyngo-intestinal junction from anterior end72.774.8 ± 3.6 (68.3 – 80.8)71.0 ± 3.6 (63.5 – 76.0)
Pharyngeal gland from anterior end170.7182.1 ± 15.8 (156.8 – 222.2)154.1 ± 10.6 (132.5 – 175.2)
DOI: https://doi.org/10.21307/jofnem-2020-018 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 11
Submitted on: Sep 12, 2019
Published on: Mar 18, 2020
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Molecular,
Morphology,
Phylogeny,
Predatory,
Taxonomy
Related subjects:
Life sciences,
Life sciences, other

© 2020 Jianfeng Gu, Munawar Maria, Lele Liu, Majid Pedram, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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