科研之友
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摘要
A new longidorid nematode, Longidorus persicus n. sp., is described and illustrated from a population extracted from soil associated with wild rose (Rosa sp.) naturally growing in the mountains close to the village of Cheshmeh-e-Nezamei near the city of Gilan-e-Gharb, Kermanshah province, western Iran. The new needle nematode is characterised by a large body size (6550-7763 mu m), an anteriorly flattened lip region, ca 13 mu m wide, distinctly set off from body contour by a depression, amphidial fovea large, pocket shaped, slightly asymmetrically bilobed, a moderately long and flexible odontostyle ca 86 mu m long, stylet guiding ring located at ca 25 mu m from anterior end, posterior arrangement of the pharyngeal gland nuclei, vulva almost equatorial (49-54 %), tail short, about 3/4 of its width, dorsally convex-conoid, with rounded terminus, with a c' ratio ca 1.3, bearing three pairs of caudal pores and male rare (ratio 1:10 females) with spicules ca 46 mu m long. Integrative diagnosis was completed with molecular data obtained using D2-D3 expansion segments of 28S rDNA, ITS1-rDNA, and partial 18S-rDNA. The phylogenetic relationships of this species with other Longidorus spp. using D2-D3 expansion segments and partial 18S-rDNA indicated that L. persicus n. sp. clustered together with L. perangustus and L. euonymus: both of them sharing an anteriorly flattened lip region and distinctly set off from body contour by a depression.
- 出版日期2017-1
