Description of Xiphinema persicum n. sp. (Nematoda: Longidoridae), a X. americanum-group species from Iran

Afshar, Farahnaz Jahanshahi; Pedram, Majid; Mobasseri, Mahyar

doi:10.1007/s10658-021-02201-2

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Further similar observations were added by Zhao et al (2017) and Pedram et al (2012) from all over the world, showing that the presently available evidence for cryptic speciation in this group could still be an underestimate. Similar examples have also been documented for X. americanum-group species (Archidona-Yuste et al, 2016;Jahanshahi Afshar et al, 2021;Naghavi et al, 2022).…”

supporting

confidence: 77%

“…Formerly, less variation in LSU D2-D3 marker has been reported for close lineages of the root-knot nematodes (Landa et al, 2008). Low divergence in the D2-D3 locus is also common for X. americanum-group members (e.g., Gutiérrez-Gutiérrez et al, 2012;Jahanshahi Afshar et al, 2021). However, ITS sequences of two species, X. sangesarense n. sp.…”

Section: Discussionmentioning

confidence: 99%

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New evidence on cryptic speciation in soil-inhabiting nematodes, with morphological and molecular characterisation of Xiphinema sangesarense n. sp. (Dorylaimida: Longidoridae) from north-central mountains of Iran

2023

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Summary A new species of the dagger nematode, genus Xiphinema, was recovered from the rhizospheric soil samples collected from rangelands in Semnan province, north-central Iran, and described based upon both morphological and molecular data. Xiphinema sangesarense n. sp. is characterised by 3.7-4.8 mm long females having 136-154 μm long odontostyle, 74-87 μm long odontophore, two equally developed genital tracts with crystalloid bodies in the tubular part of the uterus, short dorsally convex, ventrally slightly convex tail with a mucron at the end, four juvenile developmental stages and males present, functional. The new species most closely resembles X. azarbaijanense and is regarded as its tentative cryptic form, but was separated from it by reproductive mode, and morphological and molecular differences. Compared to X. afratakhtehense, the second similar species, it could be separated based on morphological differences, especially characteristics of juveniles and molecular data. Furthermore, the new species has close morphology with five know species, namely: X. aequum, X. horvatovicae, X. illyricum, X. macedonicum and X. vuittenezi, in terms of morphological characteristics (mainly structure of uterus and similar female tail), and their differences are discussed. In phylogenetic analyses of the new species using several sequences of two partial large subunit (LSU) D2-D3, and internal transcribed spacer (ITS) sequences, the new species formed a clade with Xiphinema sp. in the LSU tree, and in the ITS tree it formed a clade with X. afratakhtehense. In the cytochrome c oxidase I (COI) gene tree, sequences of the new species occupied a placement inside the clade of several sequences of X. afratakhtehense.

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supporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

New evidence on cryptic speciation in soil-inhabiting nematodes, with morphological and molecular characterisation of Xiphinema sangesarense n. sp. (Dorylaimida: Longidoridae) from north-central mountains of Iran

2023

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“…L. mirus has three juvenile developmental stages (see above), whereas L. africanus has four juvenile developmental stages (Bravo and Roca 1995). The number of juvenile developmental stages has previously been used to separate two closely resembling longidorid species (Jahanshahi Afshar et al 2021). Although sequences from the type specimens of L. africanus are currently not available, the presently generated LSU sequences of L. mirus form a separate sister clade to several sequences assigned to L. africanus from other localities in the LSU tree.…”

Section: Discussionmentioning

confidence: 99%

Data on four species of Longidorus Micoletzky, 1922 (Nematoda: Longidoridae) from southern and southeastern Iran, including description of a new species

Monemi,

Behdani,

Mahdikhani-Moghadam

et al. 2024

J. Helminthol.

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Four species of the genus Longidorus were recovered from southern (Bushehr province) and southeastern (Southern Khorasan province) Iran. The first species, L. paratabrizicus n. sp. represents a new member to the genus and is characterised by 4.8–5.6 mm long females with anteriorly flattened lip region separated from the rest of the body by depression, amphidial fovea pocket-shaped without lobes, tail conical, dorsally convex, ventrally almost straight with bluntly rounded tip and males in population. By having similar lip region and tail shape, the new species most closely resembles five species viz. L. artemisiae, L. globulicauda, L. patuxentensis, L. sturhani, and L. tabrizicus. It represents the cryptic form of the last species. The second species belongs to L. mirus, recovered in both southern and southeastern Iran, representing the first record of the species after its original description. As an update to the characteristics of this species, it’s all juvenile developmental stages were recovered and described. The criteria to separate L. mirus from two closely related species, L. auratus and L. africanus, are discussed. The third species belongs to L. persicus, a new record in southern Iran. The fourth species, L. orientalis was recovered in high population density in association with date palm trees in Bushehr province. The phylogenetic relationships of the new species and recovered populations of L. mirus and L. persicus were reconstructed using two ribosomal markers and the resulted topologies were discussed.

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A new species of the genus Xiphinema Cobb 1913 (Nematoda: Longidoridae) from north and northwest Iran

et al. 2021

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Description of Xiphinema persicum n. sp. (Nematoda: Longidoridae), a X. americanum-group species from Iran

Cited by 8 publications

References 31 publications

New evidence on cryptic speciation in soil-inhabiting nematodes, with morphological and molecular characterisation of Xiphinema sangesarense n. sp. (Dorylaimida: Longidoridae) from north-central mountains of Iran

New evidence on cryptic speciation in soil-inhabiting nematodes, with morphological and molecular characterisation of Xiphinema sangesarense n. sp. (Dorylaimida: Longidoridae) from north-central mountains of Iran

Data on four species of Longidorus Micoletzky, 1922 (Nematoda: Longidoridae) from southern and southeastern Iran, including description of a new species

A new species of the genus Xiphinema Cobb 1913 (Nematoda: Longidoridae) from north and northwest Iran

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