AI Article Synopsis
- A new species (n. sp.) has been identified using morphological, morphometric, and molecular methods, characterized by a slightly curved body measuring between 402 and 612 μm in length and featuring 90 to 113 cuticular body annuli.
- Key traits include a robust stylet, conical-acute tail, and specific reproductive features such as an open vulva and filled spermatheca with mature sperm.
- Phylogenetic analysis of rRNA gene sequences places this new species in the Criconematidae family and highlights its distinctiveness compared to closely related species.
Article Abstract
n. sp. is described by morphological, morphometric, and molecular approaches. The new species is characterized by a body slightly curved with 402 to 612 μm length, 90 to 113 cuticular body annuli with smooth to irregular margins lacking of crenation with not more than one anastomoses, lip region not offset, small flattened submedian lobes, stylet robust (52.8-60.0 µm) with well-developed knobs, open vulva with simple anterior lip, straight vagina, filled spermatheca with globular sperms, presence of males, and conical-acute tail with last annulus bilobed or rounded. Discussions are made on the characterization of n. sp. from the most closely related species, , and several other species having similar tail shape. Furthermore, results of phylogenetic analyses inferred from D2 to D3 expansion fragments of 28S rRNA, 18S rRNA, and ITS rRNA gene sequences revealed the phylogenetic position of the new species within representatives of Criconematidae and supported morphological justifications for considering this population from Iran as a new species in the genus . n. sp. is described by morphological, morphometric, and molecular approaches. The new species is characterized by a body slightly curved with 402 to 612 μm length, 90 to 113 cuticular body annuli with smooth to irregular margins lacking of crenation with not more than one anastomoses, lip region not offset, small flattened submedian lobes, stylet robust (52.8-60.0 µm) with well-developed knobs, open vulva with simple anterior lip, straight vagina, filled spermatheca with globular sperms, presence of males, and conical-acute tail with last annulus bilobed or rounded. Discussions are made on the characterization of n. sp. from the most closely related species, , and several other species having similar tail shape. Furthermore, results of phylogenetic analyses inferred from D2 to D3 expansion fragments of 28S rRNA, 18S rRNA, and ITS rRNA gene sequences revealed the phylogenetic position of the new species within representatives of Criconematidae and supported morphological justifications for considering this population from Iran as a new species in the genus .
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7266032 | PMC |
| http://dx.doi.org/10.21307/jofnem-2020-048 | DOI Listing |
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