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A new species of the genus Hexamermis Steiner, 1924 (Nematoda: Mermithidae) from northern Iran: a nematode with an unusual uterine morphology

Published online by Cambridge University Press:  03 April 2024

N. Vazifeh ,
G. Niknam Open the ORCID record for G. Niknam [Opens in a new window] ,
N.B. Camino  and
F. Abootalebi
N. Vazifeh
Affiliation:
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
G. Niknam*
Affiliation:
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
N.B. Camino
Affiliation:
Investigador CIC Centro de Estudios Parasitológicos y de Vectores, CEPAVE, Facultad de Ciencias Naturales y Museo, UNLP, Argentine
F. Abootalebi
Affiliation:
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
*
Corresponding author: G. Niknam; Email: g_niknam@tabrizu.ac.ir
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Abstract

Hexamermis zirabi sp. n., recovered from a natural habitat of Mazandaran province, north of Iran, is described based on morphological and molecular data. The new species is characterized by its six cephalic papillae; cuticle with distinct cross fibers; conoid or sharply tapered head; mouth terminal; six hypodermal cords; J-shaped vagina oriented to the anterior end of body; uterus with Z-organs or sclerotized bodies; tail similar in both sexes and bluntly rounded; spicules paired, separate, slightly curved, shorter than body width at cloaca, with rounded tip; and male genital papillae arranged in five rows. In addition to the morphological study, molecular phylogenetic analyses using a partial large subunit (28S D2-D3) were also performed, and the new species formed a highly supported (1.00% Bayesian posterior probability (BPP)) clade with Hexamermis popilliae.

Keywords

D2-D3 28S-rRNAdescriptionmorphometrytaxonomyZirab
Type
Research Paper
Information
Journal of Helminthology , Volume 98 , 2024 , e29
Copyright
© The Author(s), 2024. Published by Cambridge University Press

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