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Redescription and synonymization of Oscheius citri Tabassum, Shahina, Nasira and Erum, 2016 (Rhabditida, Rhabditidae) from India and its taxonomical consequences

Published online by Cambridge University Press:  21 April 2021

A. Rana ,
A.H. Bhat Open the ORCID record for A.H. Bhat [Opens in a new window] ,
A.K. Chaubey ,
V. Půža  and
J. Abolafia
A. Rana
Affiliation:
Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut250004, UP, India
A.H. Bhat*
Affiliation:
Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut250004, UP, India Department of Zoology, Government Degree College, Billawar 184204, Kathua, Jammu and Kashmir, India
A.K. Chaubey
Affiliation:
Nematology Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut250004, UP, India
V. Půža
Affiliation:
Laboratory of Entomopathogenic Nematodes, Institute of Entomology, Biology Centre, Czech Academy of Sciences, Branišovská 31, 370 05České Budějovice, Czech Republic
J. Abolafia
Affiliation:
Laboratorio de Nematología, Departamento de Biología Animal, Biol©ogía Vegetal y Ecología, Universidad de Jaén, Avenida de Ben Saprut s/n, 23071Jaén, Spain
*
Author for correspondence: A.H. Bhat, E-mail: aashiqhussainbhat10@gmail.com
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Abstract

A population of a nematode species belonging to the genus Oscheius was isolated in western Uttar Pradesh, India. Morphological and morphometrical studies on this species showed its high similarity with six species described previously from Pakistan (Oscheius citri, O. cobbi, O. cynodonti, O. esculentus, O. punctatus and O. sacchari). The molecular analysis of the ITS1-5.8S-ITS2 rDNA sequences of the Indian population and the six species described from Pakistan showed that all the sequences are almost identical. Thus, based on morphological and molecular characteristics, all of the six above-mentioned Pakistani species and Indian strain do not differ from each other, hence can be considered synonyms. The correct name for this taxon is the first described species O. citri. Additionally, the phylogenetic analysis of the 18S rDNA and the 28S rDNA sequences showed that Oscheius citri is sister to the clade formed by O. chongmingensis and O. rugaoensis from China. The high similarity of morphological and morphometric characteristics of O. citri and other species, O. maqbooli, O. nadarajani, O. niazii, O. shamimi and O. siddiqii, suggest their conspecificity; however, lack of molecular data for these species does not allow this hypothesis to be tested.

Keywords

18S rDNA28S rDNAITS rDNAmolecular analysismorphologyOscheius citriO. cobbiO. cynodontiO. esculentusO. punctatusO. saccharitaxonomy
Type
Research Paper
Information
Journal of Helminthology , Volume 95 , 2021 , e24
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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Footnotes

†

These authors contributed equally.

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