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Ottolenchus sinipersici n. sp. (Rhabditida: Tylenchidae) from the Persian Gulf mangrove forests, Iran

In: Nematology
Authors:
Manouchehr Hosseinvand Department of Plant Protection, Faculty of Agriculture, University of Zanjan, 45371-38791 Zanjan, Iran

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Ali Eskandari Department of Plant Protection, Faculty of Agriculture, University of Zanjan, 45371-38791 Zanjan, Iran

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Joaquín Abolafia Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Campus ‘Las Lagunillas’ s/n, Edificio B3, 23071 Jaén, Spain

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https://orcid.org/0000-0001-9640-236X
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Akbar Karegar Department of Plant Protection, School of Agriculture, Shiraz University, 71441-65186 Shiraz, Iran

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Reza Ghaderi Department of Plant Protection, School of Agriculture, Shiraz University, 71441-65186 Shiraz, Iran

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https://orcid.org/0000-0001-7647-1413
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Zahra Majd Taheri Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

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Parima Hajializadeh Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran

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Summary

A new species of Tylenchidae from the rhizosphere of mangrove trees in Hormozgan and Khuzestan provinces, Iran, is described based on morphological and molecular data. Ottolenchus sinipersici n. sp., is characterised by a slightly fusiform body 560-665 μm long, lateral field in the form of a narrow band with two faint incisures that are not visible in fatter females, indistinct transverse annuli under the light microscope, cephalic region continuous with the body contour, smooth and flattened dorsoventrally, longitudinal and narrow sigmoid amphidial slits, stylet delicate, 10.1-11.2 μm long, with small rounded to slightly posteriorly sloping knobs, well-developed median bulb, offset and pyriform pharyngeal basal bulb, vulva located at 66.9-69.6% of body length, offset spermatheca, short post-vulval uterine sac, spicules 18.5-20.5 μm long with highly curved blades, and a 113-135 μm long filiform tail with a hook-like or coiled terminus. In Bayesian inference phylogenetic trees based on the partial small subunit ribosomal DNA (SSU rDNA) and D2-D3 expansion segment of large subunit ribosomal DNA (D2-D3 LSU rDNA) genes, the new species clustered together with O. facultativus (KJ869310) in SSU, and forms a clade with three isolates of O. discrepans in LSU phylogeny. Ottolenchus fungivorus n. comb. (= Filenchus fungivorus) is proposed.

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