Morphological and molecular characterization of Paractinolaimus uljinensis n. sp. (Nematoda: Actinolaimidae) from Korea, with an updated compendium of the genus

A new species of the genus isolated from the bark of a dead red pine tree was characterized using morphometric data and molecular DNA barcodes. n. sp. was characterized by its medium sized body 2.50 to 2.98 mm long; lip region truncate, angular and offset by a depression; odontostyle 23.5 to 27.0 μm...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nematology 2024-03, Vol.56 (1), p.20240040-320
Main Authors: Mwamula, Abraham Okki, Kim, Yi Seul, Lee, Dong Woon
Format: Article
Language:English
Subjects:
DNA barcodes
morphology
morphometrics
phylogeny
Research Paper
taxonomy
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new species of the genus isolated from the bark of a dead red pine tree was characterized using morphometric data and molecular DNA barcodes. n. sp. was characterized by its medium sized body 2.50 to 2.98 mm long; lip region truncate, angular and offset by a depression; odontostyle 23.5 to 27.0 μm long; basal shield of pharynx present; vulval opening wide and longitudinal, positioned slightly anteriorly (V = 42.5–47.7); several advulval papillae; female tail long and filiform (324.0–435.0 μm long, c’ = 10.1–14.2); a clearly visible copulatory hump; spicules 60.0 to 70.5 μm long; 12 to 15 (mostly 12–14) large contiguous ventromedian supplements, and male tail conoid to broadly rounded. The new species was morphologically compared with , and . The phylogenetic relationships among species were reconstructed using 18S- and 28S-rRNA gene sequences. The phylogenies showed well-supported sister relations of n. sp. with and . In addition, the ITS-rRNA gene sequences of n. sp. were supplied, representing the first characterization of the gene for the genus.
ISSN:0022-300X
2640-396X
2640-396X
DOI:10.2478/jofnem-2024-0040