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Description of Longidorella (Saevadorella) caspica n. sp. (Dorylaimida: Nordiidae) from north Iran

Fariba Heydari
Fariba Heydari
, 
Mohammad Reza Atighi
Mohammad Reza Atighi
, 
Ebrahim Pourjam
Ebrahim Pourjam
 et 
Majid Pedram
Majid Pedram
   | 01 janv. 2021
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Publié en ligne: 01 janv. 2021
Pages: 1 - 11
DOI: https://doi.org/10.21307/jofnem-2021-004
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© 2021 Authors, published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1:

Line drawings of Longidorella (Saevadorella) caspica n. sp. A-C, E-G: Female; D: Male. A: Pharynx; B: Anterior body region; C: Anterior end; D: Posterior body region; E and G: Tail and posterior body region, F: Posterior genital tract.
Line drawings of Longidorella (Saevadorella) caspica n. sp. A-C, E-G: Female; D: Male. A: Pharynx; B: Anterior body region; C: Anterior end; D: Posterior body region; E and G: Tail and posterior body region, F: Posterior genital tract.

Figure 2:

Photomicrographs of Longidorella (Saevadorella) caspica n. sp. A-D, F-I: Female; E: Male. A-D: Anterior and cephalic region; E and F: Entire body; G: Vulva in ventral view; H: Mature egg inside female reproductive system; I: Sperm inside the uterus. (Scale bars = 10 μm, except E and F = 100 μm).
Photomicrographs of Longidorella (Saevadorella) caspica n. sp. A-D, F-I: Female; E: Male. A-D: Anterior and cephalic region; E and F: Entire body; G: Vulva in ventral view; H: Mature egg inside female reproductive system; I: Sperm inside the uterus. (Scale bars = 10 μm, except E and F = 100 μm).

Figure 3:

Photomicrographs of Longidorella (Saevadorella) caspica n. sp. A and B, F and G: Male; C-E: Female. A and B: Posterior body region (Arrows showing supplements). C. Pharyngeal bulb. F-G: Posterior body region with spicules. (All scale bars = 10 μm).
Photomicrographs of Longidorella (Saevadorella) caspica n. sp. A and B, F and G: Male; C-E: Female. A and B: Posterior body region (Arrows showing supplements). C. Pharyngeal bulb. F-G: Posterior body region with spicules. (All scale bars = 10 μm).

Figure 4:

Bayesian 50% majority rule consensus tree inferred from the 28S rDNA D2-D3 sequences of Longidorella (Saevadorella) caspica n. sp. under the GTR + G + I model. Bayesian posterior probabilities (BPP) and maximum likelihood bootstrap (ML BS) values > 0.50 are given for appropriate clades in the form: BPP/ML BS. The newly generated species is in bold font.
Bayesian 50% majority rule consensus tree inferred from the 28S rDNA D2-D3 sequences of Longidorella (Saevadorella) caspica n. sp. under the GTR + G + I model. Bayesian posterior probabilities (BPP) and maximum likelihood bootstrap (ML BS) values > 0.50 are given for appropriate clades in the form: BPP/ML BS. The newly generated species is in bold font.

The used sequences in 28S phylogeny of Longidorella (Saevadorella) caspica n. sp., their accession number, locality, and related plants.

Species name Accession number Location, related plant
Allodorylaimus sp. KY942069 China, unknown
Allodorylaimus andrassyi AY593016 Unknown
Allodorylaimus andrassyi AY593015 Unknown
Dorydorella bryophila HM235514 Unknown
Enchodelus sp. KP190120 Hamedan province, Iran, mosses
Enchodelus longispiculus KP190119 Hamedan province, Iran, mosses
Enchodelus sp. EF207240 Unknown
Enchodorus dolichurus KR184125 Golestan province, Iran, mosses
Enchodorus dolichurus KR184124 Golestan province, Iran, mosses
Enchodorus yeatsi KX691911 East Azarbaijan province, Iran, grasses
Eudorylaimus sp. AY593037 Unknown
Heterodorus brevidentatus KP963962 Kerman city, Iran, mosses
Heterodorus brevidentatus KP963960 Maragheh city, Iran, mosses
Heterodorus brevidentatus KP963963 Maragheh city, Iran, mosses
Heterodorus brevidentatus KP963964 Kermanshah city, Iran, mosses
Heterodorus brevidentatus KP963965 Kermanshah city, Iran, mosses
Heterodorus brevidentatus KP963961 Tehran city, Iran, mosses
Heterodorus morgensis KX691912 Mazandaran province, Iran, grasses
Heterodorus youbertghostai KR184126 Sabalan region, Iran, grasses
Heterodorus youbertghostai KR184127 Sabalan region, Iran, grasses
Longidorella macramphis AY593042 Unknown
Longidorella sp. AY593043 Unknown
Longidorella penetrans HM235515 Unknown
Longidorella sp. AY593044 Unknown
Longidorella sp. AY593045 Unknown
Mesodorylaimus sp. AY593006 Unknown
Mesodorylaimus sp. AY593005 Unknown
Microdorylaimus miser AY593046 Unknown
Microdorylaimus modestus HM235513 Unknown
Microdorylaimus modestus AY593049 Unknown
Mononchus truncatus AY593064 Unknown
Nordiidae sp. KP202362 Tehran city, Iran, grasses
Nordiidae sp. KP202361 Tehran city, Iran, grasses
Nordiidae sp. AY593054 Unknown
Nordiidae sp. MH346478 Tehran city, Iran, mosses/pine tree
Prionchulus punctatus MG994945 Unknown
Prodorylaimus uliginosus AY593034 Unknown
Pungentus engadinensis MH346473 Semnan province, Iran, fruit trees
Pungentus engadinensis MH346474 Mazandaran province, Iran, forest trees
Pungentus silvestris AY593052 Unknown
Pungentus silvestris AY593054 Unknown
Pungentus silvestris AY593053 Unknown
Pungentus azarbaijanensis MH346476 West Azarbaijan province, Iran, grasses
Pungentus azarbaijanensis MH346477 West Azarbaijan province, Iran, grasses
Pungentus engadinensis AY593050 Unknown
Pungentus monohystera MF325344 Germany, lime tree
Pungentus monohystera MF325343 Germany, lime tree
Rhyssocolpus vinciguerrae KP204547 Gilan province, Iran, forest trees
Thonus minutus AY593047 Unknown
Thonus minutus AY593048 Unknown
Thonus circulifer AY593039 Unknown
Thonus sp. AY593041 Unknown
Thonus sp. AY593040 Unknown
Thonus circulifer AY593038 Unknown
Tylencholaimellus sp. AY593055 Unknown

Morphometrics of Longidorella (Saevadorella) caspica n. sp.

Holotype Paratype
Characters Female Females Males
n 1 3 3
L 852 832 ± 38.5 (788-874) 811 ± 74 (725-856)
a 19.8 19 ± 2 (16.8-21.3) 22.0 ± 1.5 (20.7-23.8)
b 3.8 3.7 ± 0.2 (3.5-3.8) 3.8 ± 0.2 (3.6-4.0)
c 25.8 27.2 ± 7 (20.7-37.0) 25.2 ± 2.2 (23.0-27.5)
c′ 1.3 1.3 ± 0.3 (0.9-1.5) 1.3 ± 0.1 (1.2-1.4)
V 59.2 55.7 ± 3.0 (52.5-59.0) –
Anterior end-vulva 504 463.5 ± 32.5 (425-504) –
Cephalic region diam. 12 11.5 ± 1.0 (10-12.5) 12.5 ± 0.5 (12-13)
Cephalic region height 5 5.0 ± 0.0 (5-5) 4.7 ± 0.6 (4-5)
Odontostyle length 33 33.0 ± 0.5 (32-33) 35 ± 1 (34-36)
Odontophore length 38 35.5 ± 2.5 (33-38) 33.3 ± 3.0 (30-36)
Stylet total length 71 68.5 ± 2.0 (66-71) 68.5 ± 2.5 (66-71)
Guiding ring from ant. end 2.8 18 ± 1 (18-20) 18.0 ± 0.5 (18.0-18.5)
Neck length 18 229 ± 2 (227-231) 212 ± 8 (203-220)
Pharyngeal expansion length 92 93 ± 1 (92-94) 85.5 ± 5.5 (80-91)
Diam. at guiding ring level 16 18.5 ± 0.0 (18.5-18.5) 18.5 ± 0.0 (18.5-18.5)
 -at neck base 40 41.0 ± 3.5 (38-46) 36.5 ± 2.5 (34-39)
 -at mid-body 43 44.0 ± 2.5 (41-47) 37.0 ± 2.5 (35-40)
 -at anus 25 25.0 ± 0.5 (24-25) 25 ± 1 (24-26)
Prerectum 56 57.0 ± 7.5 (47-65) 81 ± 20 (67-95)
Rectum 22 23.5 ± 3.5 (19-27) 38.0 ± 1.5 (37-39)
Tail length 33 34.5 ± 2.5 (33-38) 32.5 ± 4.0 (29-37)
Spicules length – – 33.0 ± 1.5 (32-35)
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