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

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Abstract

Five populations of a new dagger nematode species were recovered from natural grasslands and forests of north and northwest Iran, and described based upon morphological and molecular data in present paper. Xiphinema hyrcaniense n. sp. is characterized by 3.9–5.5 mm long females, having 102–142 μm long odontostyle, 64–88 μm long odontophore, guiding ring located at 115–147 μm distance from anterior end, two equally developed genital branches having crystalloids in tubular part of uteri and pseudo-Z-organ at their junction with pars dilatata uteri, short, rounded to dorsally more convex tail with a mucro or in few specimens, without it. Common males with 72–95 μm long spicules and four juvenile developmental stages. The new species is similar to six known species belonging to artificial morphospecies group 5, especially looking closest to X. montenegrinum in its general morphology, but could be separated by ontogenesis of tail shape and morphometric indices. In molecular phylogenetic analyses using partial large subunit, and internal transcribe spacer 1 ribosomal DNA (LSU D2-D3 and ITS1 rDNA) sequences, the new species formed a clade with X. cretense and Xiphinema sp. in LSU; and in ITS1 tree, with X. dentatum and X. paradentatum.

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Notes

  1. The name of the new species is derived from Hyrcania, meaning “Wolf’s Land”, the ancient region located in southeast of the Caspian Sea, the occurrence region of the type population of the new species

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Acknowledgements

The soil samples from Gilan province, studied in present study, were kindly provided by Dr. Yousef Panahandeh. This help is appreciated. The technical helps of Dr. Mohammad Reza Atighi and Dr. Farahnaz Jahanshahi Afshar are appreciated. We thank Tarbiat Modares University and Iranian National Science Foundation (INSF) for financial supports.

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Authors and Affiliations

  1. Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

    Samira Fadakar, Ebrahim Pourjam & Majid Pedram

  2. Faculty of Sciences, Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovića 2, Novi Sad, 21000, Serbia

    László Barsi

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  1. Samira Fadakar
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  2. Ebrahim Pourjam
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  3. László Barsi
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Correspondence to Majid Pedram.

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Fadakar, S., Pourjam, E., Barsi, L. et al. A new species of the genus Xiphinema Cobb 1913 (Nematoda: Longidoridae) from north and northwest Iran. Eur J Plant Pathol 160, 557–574 (2021). https://doi.org/10.1007/s10658-021-02264-1

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