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Description of Ektaphelenchus koreanus n. sp. (Nematoda: Ektaphelenchidae) with morphometrical notes on the Ektaphelenchus species

Jianfeng Gu
Jianfeng Gu
, 
Munawar Maria
Munawar Maria
, 
Yiwu Fang
Yiwu Fang
 e 
Lele Liu
Lele Liu
   | 29 lug 2019
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Article Category: Arts & Humanities
Pubblicato online: 29 lug 2019
Pagine: 1 - 13
Ricevuto: 29 mar 2019
DOI: https://doi.org/10.21307/jofnem-2019-049
© 2019 Jianfeng Gu et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Line drawings of Ektaphelenchus koreanus n. sp. (A) female; (B) male; (C) head region; (D) posterior part of female; (E–H) female tail region; (I) lateral view of male tail; (J–L) spicules. (Scale bars = A–L = 10; B = 20 μm).
Line drawings of Ektaphelenchus koreanus n. sp. (A) female; (B) male; (C) head region; (D) posterior part of female; (E–H) female tail region; (I) lateral view of male tail; (J–L) spicules. (Scale bars = A–L = 10; B = 20 μm).

Figure 2:

Light photomicrographs of Ektaphelenchus koreanus n. sp. (A) female; (B) male; (C) head region; (D) lateral region; (E) feeding on Aphelenchoides sp.; (F, G) vulval region (lateral view); (H) vulval region (ventral view); (I, J) female tail; (K, L) Male tail. (Scale bars = 10 μm).
Light photomicrographs of Ektaphelenchus koreanus n. sp. (A) female; (B) male; (C) head region; (D) lateral region; (E) feeding on Aphelenchoides sp.; (F, G) vulval region (lateral view); (H) vulval region (ventral view); (I, J) female tail; (K, L) Male tail. (Scale bars = 10 μm).

Figure 3:

Spicule morphology of accessible Ektaphelenchus species. (A) = E. betulae; (B) = E. dendroctoni; (C) = E. goffarti; (D) = E. ibericus; (E) = E. josephi; (F) = E. joyceae; (G) = E. koreanus n. sp.; (H) = E. macrobulbosus; (I) = E. obtusus; (J) = E. oleae; (K) = E. piniperdae; (L) = E. prolobos; (M) = E. propora; (N) = E. riograndensis; (O) = E. sandiaensis; (P) = E. scolyti; (Q) = E. skrjabini; (R) = E. stammeri; (S) = E. taiwanensis; (T) = E. tuerkorum; (U) = E. zwoelferi. Scale bars (A–C, H, L, R, U, S = 20 µm; D, E, G, J, P, S, T = 10 µm; F = 7 µm; I = 30 µm; K = 25 µm; M = 50 µm; N = 100 µm; Q = 100 µm, O = 300 µm).
Spicule morphology of accessible Ektaphelenchus species. (A) = E. betulae; (B) = E. dendroctoni; (C) = E. goffarti; (D) = E. ibericus; (E) = E. josephi; (F) = E. joyceae; (G) = E. koreanus n. sp.; (H) = E. macrobulbosus; (I) = E. obtusus; (J) = E. oleae; (K) = E. piniperdae; (L) = E. prolobos; (M) = E. propora; (N) = E. riograndensis; (O) = E. sandiaensis; (P) = E. scolyti; (Q) = E. skrjabini; (R) = E. stammeri; (S) = E. taiwanensis; (T) = E. tuerkorum; (U) = E. zwoelferi. Scale bars (A–C, H, L, R, U, S = 20 µm; D, E, G, J, P, S, T = 10 µm; F = 7 µm; I = 30 µm; K = 25 µm; M = 50 µm; N = 100 µm; Q = 100 µm, O = 300 µm).

Figure 4:

Phylogenetic relationships of Ektaphelenchus koreanus n. sp. and aphelenchid nematodes based on full length of ITS. The 100001st Bayesian tree inferred from ITS under TVM+I+G model (ln L = −14,363.6136; freqA = 0.2773; freqC = 0.1724; freqG = 0.2291; freqT = 0.3213; R(a) = 1.0903; R(b) = 3.5149; R(c) = 1.7693; R(d) = 0.9479; R(e) = 3.5149; R(f) = 1.0000; Pinva = 0.0940; Shape = 1.3200). Aphelenchoides besseyi served as the outgroup species. Posterior probability values exceeding 50% are given on appropriate clades.
Phylogenetic relationships of Ektaphelenchus koreanus n. sp. and aphelenchid nematodes based on full length of ITS. The 100001st Bayesian tree inferred from ITS under TVM+I+G model (ln L = −14,363.6136; freqA = 0.2773; freqC = 0.1724; freqG = 0.2291; freqT = 0.3213; R(a) = 1.0903; R(b) = 3.5149; R(c) = 1.7693; R(d) = 0.9479; R(e) = 3.5149; R(f) = 1.0000; Pinva = 0.0940; Shape = 1.3200). Aphelenchoides besseyi served as the outgroup species. Posterior probability values exceeding 50% are given on appropriate clades.
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