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Morphological and Molecular Characterization of Talanema eshtiaghii sp. n. (Dorylaimida, Qudsianematidae) from Iran

Nasir Vazifeh
Nasir Vazifeh
, 
Gholamreza Niknam
Gholamreza Niknam
, 
Habibeh Jabbari
Habibeh Jabbari
 e 
Reyes Peña-Santiago
Reyes Peña-Santiago
   | 05 giu 2023
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Article Category: Research Paper
Pubblicato online: 05 giu 2023
Pagine: -
Ricevuto: 18 dic 2022
DOI: https://doi.org/10.2478/jofnem-2023-0022
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© 2023 Nasir Vazifeh et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Talanema eshtiaghii sp. n. (A) neck region; (B) anterior region in lateral median view; (C) anterior region in lateral surface view; (D) female, posterior genital branch; (E): spicules; (F) female, caudal region; (G) female, entire; (H) male, entire; (I) male, caudal region; (J) lateral guiding piece.
Talanema eshtiaghii sp. n. (A) neck region; (B) anterior region in lateral median view; (C) anterior region in lateral surface view; (D) female, posterior genital branch; (E): spicules; (F) female, caudal region; (G) female, entire; (H) male, entire; (I) male, caudal region; (J) lateral guiding piece.

Figure 2:

Talanema eshtiaghii sp. n. (A) anterior region in lateral median view; (B) anterior region in lateral surface view; (C) female, entire; (D) female, caudal region; (E) vagina region: (F) female, posterior genital branch; (G) sperm cells; (H) lateral guiding piece; (I) male, caudal region; (J) male, entire; (K) pharyngo-intestinal junction; (L) spicules. (Scale bars: A, B, D–I, K and L = 10 μm, C and J = 100 μm).
Talanema eshtiaghii sp. n. (A) anterior region in lateral median view; (B) anterior region in lateral surface view; (C) female, entire; (D) female, caudal region; (E) vagina region: (F) female, posterior genital branch; (G) sperm cells; (H) lateral guiding piece; (I) male, caudal region; (J) male, entire; (K) pharyngo-intestinal junction; (L) spicules. (Scale bars: A, B, D–I, K and L = 10 μm, C and J = 100 μm).

Figure 3:

Bayesian 50% majority rule consensus tree of Talanema eshtiaghii sp. n. as inferred from D2–D3 expansion segments of 28S rRNA gene sequence under the GTR+I+G model. Bayesian posterior probabilities are given for each clade. Newly obtained sequence is indicated by bold letters.
Bayesian 50% majority rule consensus tree of Talanema eshtiaghii sp. n. as inferred from D2–D3 expansion segments of 28S rRNA gene sequence under the GTR+I+G model. Bayesian posterior probabilities are given for each clade. Newly obtained sequence is indicated by bold letters.

Morphometrics of Talanema eshtiaghii sp. n. from Iran. Measurements in μm except L in mm, and in the form: average ± sd (range).

Locality Province City of Sufiyan, Roodghat area, Zeinabad villageEast Azarbaijan
Holotype Paratypes
n ♀ 5♀♀ 3♂♂
Character
L 1.50 1.56 ± 0.08 (1.45–1.68) 1.49 ± 0.04 (1.45–1.53)
a 32 29.2 ± 2.1 (27–32) 27.6 ± 2.1 (27–30)
b 4.3 4.5 ± 0.2 (4.3–4.9) 4.5 ± 0.1 (4.4–4.6)
c 44 42.1 ± 7.7 (33–56) 39.7 ± 3.6 (37–44)
c’ 1.2 1.3 ± 0.1 (1.0–1.6) 1.1 ± 0.1 (1.0–1.3)
V 55 56 ± 1.2 (55–58) -
Lip region diameter 13 13.7 ± 0.1 (13–15) 13.4 ± 0.1 (13–14)
Odontostyle length-dorsal side 18 16.4 ± 1.3 (15–18) 17.3 ± 0.5 (17–18)
Odontophore length 24 25.1 ± 1.7 (24–27) 26.1 ± 0.7 (25–27)
Neck length 344 349 ± 10 (341–362) 322 ± 11 (312–337)
Pharyngeal expansion length 144 141.0 ± 7.6 (131–152) 133.0 ± 2.1 (124–138)
Body diameter at neck base 45 51.1 ± 4.3 (45–56) 52.0 ± 3.3 (49–56)
mid-body 47 52.3 ± 2.8 (47–59) 53.4 ± 3.5 (50–58)
anus/cloaca 27 28.3 ± 1.2 (27–30) 32.3 ± 1.5 (31–34)
Prerectum length 61 67 ± 10 (56–81) 73.4 ± 8.3 (59–97)
Rectum/cloaca length 34 34.2 ± 2.8 (30–38) 59.0 ± 4.1 (58–66)
Tail length 34 38.7 ± 3.6 (30–44) 36.1 ± 3.8 (33–40)
Spicules length - - 52.2 ± 3.5 (49–56)
Ventromedian supplements - - (14–18)
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