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Oostenbrinkia pedrami n. sp. (Dorylaimida: Aulolaimoididae) from Iran, with molecular phylogenetic relationships to some other Dorylaimida Pearse, 1942.

ABSTRACT: A population of the rarely collected aulolaimoidid genus, Oostenbrinkia, was recovered from the rhizosphere soil of Fagus orientalis in Mazandaran province, north Iran. Oostenbrinkia pedrami n. sp. is mainly characterized by long females, 920 µm with a 6 to 8 µm long odontostyle, 18 to 21 µm long odontophore with well-developed basal ﬂanges, 124 to 187 µm long neck, vulva post equatorial (V = 58.5-61.0), and tail short (10-18 µm long, c = 42.5-65.2, c' = 0.6-0.9) and rounded. Compared to the generotype species, O. oostenbrinki, the new species has a longer odontostyle, total stylet, a posteriorly located vulva, and shorter rounded tail, and compared to the only one other representative, O. parva, longer females with longer odontostyle and total stylet. In molecular phylogenetic analyses using a near-full-length sequence of the small subunit ribosomal DNA (SSU rDNA), the new species appeared as an independent basal lineage to the included ingroup species. This is the first molecular data of this family.

SUBMITTER: Afshar FJ

PROVIDER: S-EPMC8015307 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Two species of the genus Pungentus, one new and one known, collected in natural vegetation and cultivated soils in northwest of Iran, are studied. Pungentus sufiyanensis n. sp. is characterized by its 1.22 to 1.57?mm long body, offset lip region by a constriction and 7 to 9??m broad, 18 to 21??m long odontostyle, 304 to 348??m long neck, 133 to 161??m long esophageal expansion, mono-opisthodelphic female genital system without anterior uterine sac, slightly backward directed vagina, absence of pars refringens vaginae, V?=?47-54, rounded-conoid caudal region (17.5-23??m, c?=?65-84, c´?=?0.7-1) with saccate bodies, and the absence of male. Molecular analysis, based on D2-D3 expansion segments of the 28S rDNA (LSU), confirms the monophyly of the family Nordiidae and suggests the monophyly of the genus Pungentus, with the new species forming a clade with other Iranian species. New data are presented for six Iranian populations of P. engadinensis, and an updated key for the identification of Pungentus species is also provided.Two species of the genus Pungentus, one new and one known, collected in natural vegetation and cultivated soils in northwest of Iran, are studied. Pungentus sufiyanensis n. sp. is characterized by its 1.22 to 1.57?mm long body, offset lip region by a constriction and 7 to 9??m broad, 18 to 21??m long odontostyle, 304 to 348??m long neck, 133 to 161??m long esophageal expansion, mono-opisthodelphic female genital system without anterior uterine sac, slightly backward directed vagina, absence of pars refringens vaginae, V?=?47?54, rounded-conoid caudal region (17.5–23??m, c?=?65–84, c´?=?0.7–1) with saccate bodies, and the absence of male. Molecular analysis, based on D2-D3 expansion segments of the 28S rDNA (LSU), confirms the monophyly of the family Nordiidae and suggests the monophyly of the genus Pungentus, with the new species forming a clade with other Iranian species. New data are presented for six Iranian populations of P. engadinensis, and an updated key for the identification of Pungentus species is also provided.

Dataset Information

Oostenbrinkia pedrami n. sp. (Dorylaimida: Aulolaimoididae) from Iran, with molecular phylogenetic relationships to some other Dorylaimida Pearse, 1942.

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