Description of Scutylenchus quercinus n. sp. (Nematoda: Tylenchomorpha) from Asalem forests, north Iran

Sheikhzadeh, Souzan; Mobasseri, Mahyar; Valizadeh, Ahmad; Pedram, Majid

doi:10.1163/15685411-bja10149

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…This result represents that the genus is not monophyletic. Similar results were obtained in some recent phylogenies (Abdolkhani and Azimi, 2021;Sheikhzadeh et al, 2022).…”

Section: Journal Of Nematologysupporting

confidence: 91%

Morphological and Molecular Characterization of Tylenchorhynchus clarus Allen, 1955 and T. zeae Sethi & Swarup, 1968 (Rhabditida: Telotylenchidae) from Iraq

Jumaah

Azimi

2022

Journal of Nematology

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During a survey on the biodiversity of plant-parasitic nematodes in Misan province (southeast Iraq), Tylenchorhynchus clarus and T. zeae were discovered around the rhizosphere of sugarcane and pumpkin, respectively. The morphological and morphometric data were provided for the recovered species. The morphological characters of both populations are in agreement with the type populations and other populations of them. To the best of our knowledge, this is the first report of these two species from Iraq, and a first report of the association of T. zeae with pumpkin. Molecular phylogenetic analyses of the Iraqi populations of T. clarus and T. zeae using the D2–D3 expansion segments of 28S rDNA and internal transcribed spacer (ITS) rDNA sequences using Bayesian inference (BI), showed they form maximally supported clades with other sequences of both species.

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“…This result represents that the genus is not monophyletic. Similar results were obtained in some recent phylogenies (Abdolkhani and Azimi, 2021;Sheikhzadeh et al, 2022).…”

Section: Journal Of Nematologysupporting

confidence: 91%

Morphological and Molecular Characterization of Tylenchorhynchus clarus Allen, 1955 and T. zeae Sethi & Swarup, 1968 (Rhabditida: Telotylenchidae) from Iraq

Jumaah

Azimi

2022

Journal of Nematology

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Integrative taxonomy and phylogenetic relationships between representatives of genera within Merliniinae (Nematoda: Merliniidae), with new data on fourteen known and one unknown species

Hosseinvand,

Eskandari,

Azizi

et al. 2023

J. Helminthol.

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The application of integrative taxonomic approaches is useful to species delineation based on a combination of distinct types of characters, here morphological features and ribosomal DNA sequences. In this study, we surveyed ectoparasitic nematodes of the subfamily Merliniinae in cultivated and natural environments in Iran. Results of morphological and morphometrical studies, light and scanning electron microscopic observations, and molecular analyses allowed us the identification of fourteen known and one unknown species including representatives of the genera Amplimerlinius (five species), Geocenamus (one species), Merlinius (three species), Nagelus (two species), Paramerlinius (one species), Scutylenchus (two species), and Telomerlinius (one species). The unknown species, Scutylenchus sp., characterized by having 35–50 incisures at mid-body; lateral field with 6 longitudinal incisures; lip region slightly offset by a constriction, flattened at front end; bearing 5–7 annuli; cephalic framework not refractive; stylet robust, 18.3–27 μm long; post anal intestinal sac absent; tail elongate conical, dorsally convex, with 24 (19–28) annuli in ventral side, ending to a smooth terminus and males common; spicules 24.5–31 μm long. The phylogenetic analyses were carried out using molecular data from nuclear ribosomal DNA (rDNA) genes viz. D2–D3 expansion segments of the large ribosomal subunit (28S rRNA), partial small ribosomal subunit (18S rRNA), and internal transcribed spacer (ITS). The molecular variability of D2–D3 expansion segments of the 28S rRNA and partial 18S rRNA was low in this family in comparison to the ITS region, which could be a more helpful molecular marker in species and genus identification.

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Description of Boleodorus bushehrensis n. sp. (Rhabditida: Tylenchidae) from Southern Iran, and Observations on a Commonly Known Species

Monemi

Atighi

Abolafia

et al. 2022

Journal of Nematology

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A new species of the genus Boleodorus, recovered from southern Iran, is described and illustrated based upon morphological and molecular data. B. bushehrensis n. sp. is mainly characterized by having a wide and low cephalic region (which is continuous with the adjacent body), the oral aperture in a depression in side view under a light microscope, four lines in the lateral field, weak metacorpus with a vestigial-to-invisible valve, and short (26–38 mm long) hooked tail with rounded tip. The females are 334–464 mm long and have a spherical spermatheca filled with spheroid sperm; males have 11.5- to 12.0-mm-long spicules and weakly developed bursa. The new species has an annulated low cephalic region, four large cephalic papillae, and small crescent-shaped amphidial openings when observed by scanning electron microscopy (SEM). Its morphological and morphometric differences with seven known species are discussed. The phylogenetic relationships of the new species with other relevant genera and species have been studied using partial sequences of small and large subunit ribosomal DNA (SSU and LSU rDNA). In both the SSU and LSU phylogenies, the sequences of B. bushehrensis n. sp. and other Boleodorus spp. formed a clade. A second species, B. thylactus, when studied under SEM, has a raised, smooth cephalic region, four large cephalic papillae, and oblique amphidial slits, with the oral opening in a depression.

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Description of Scutylenchus quercinus n. sp. (Nematoda: Tylenchomorpha) from Asalem forests, north Iran

Cited by 3 publications

References 27 publications

Morphological and Molecular Characterization of Tylenchorhynchus clarus Allen, 1955 and T. zeae Sethi & Swarup, 1968 (Rhabditida: Telotylenchidae) from Iraq

Morphological and Molecular Characterization of Tylenchorhynchus clarus Allen, 1955 and T. zeae Sethi & Swarup, 1968 (Rhabditida: Telotylenchidae) from Iraq

Integrative taxonomy and phylogenetic relationships between representatives of genera within Merliniinae (Nematoda: Merliniidae), with new data on fourteen known and one unknown species

Description of Boleodorus bushehrensis n. sp. (Rhabditida: Tylenchidae) from Southern Iran, and Observations on a Commonly Known Species

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