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Morphological and molecular characterisation of Hemicriconemoides paracamelliae sp. n. (Nematoda: Criconematidae) and two known species of Hemicriconemoides from China
- Source :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2018
- Publisher :
- Brill Academic Publishers, 2018.
-
Abstract
- Sheathoid nematodes of the genus Hemicriconemoides are migratory root-ectoparasites of many crops but damage is documented for only a few species. Hemicriconemoides paracamelliae sp. n., isolated in Hangzhou, Zhejiang, China, from the rhizosphere of Cinninghamia lanceolata, is described together with H. kanayaensis and H. parataiwanensis. These three species are characterised morphologically and molecularly with important morphological details elucidated by SEM photographs. The new species can be characterised by the en face view having a dorsoventrally orientated oral disc with slit-like opening, and the labial plate being composed of two lateral semi-globular shaped projections on the lateral sides of the oral disc. This new species has the first lip annulus expanded and slightly wider than the second, stylet 83 (80-85) μm long, excretory pore located 5-6 annuli posterior to the base of the pharyngeal bulb, vulva slit-like, vulval flaps absent, spermatheca rounded to oblong-shaped, and anus located 5-8 annuli posterior to vulva. The tail is elongated, conoid, with the terminal annuli curving dorsally or ventrally to form a finely rounded tip. The study provides the first record of H. kanayaensis from mainland China, a new host association of H. parataiwanensis, and molecular sequencing data of the 18S, 28S D2-D3 and ITS sequences.<br />This research was supported by the National Natural Science Foundation of China (No. 31772137).
- Subjects :
- 0106 biological sciences
Morphology
Hemicriconemoides kanayaensis
010607 zoology
01 natural sciences
Host association
Metasequoia glyptostroboides
First record
Spermatheca
Camellia grijsii
Hemicriconemoides parataiwanensis
Conoid
Ecology, Evolution, Behavior and Systematics
Phylogeny
Taxonomy
Morphometrics
Nematology
biology
Cinninghamia lanceolata
Molecular
Anatomy
biology.organism_classification
Stylet
New species
Excretory system
SEM
Taxonomy (biology)
Agronomy and Crop Science
010606 plant biology & botany
Subjects
Details
- ISSN :
- 31772137
- Database :
- OpenAIRE
- Journal :
- Digital.CSIC. Repositorio Institucional del CSIC, instname
- Accession number :
- edsair.doi.dedup.....262f0f122991c5edb2aec3d393ee19f2