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The elevation of a unique population of Corynosoma strumosum (Acanthocephala: Polymorphidae) from the Caspian seal, Pusa caspica, in the Caspian Sea to Corynosoma neostrumosum n. sp.

Published online by Cambridge University Press:  14 August 2023

O. M. Amin Open the ORCID record for O. M. Amin [Opens in a new window] ,
A. Chaudhary ,
M. Sharifdini  and
H. S. Singh
O. M. Amin*
Affiliation:
Institute of Parasitic Diseases, 11445 E. Via Linda, # 2-419, Scottsdale, Arizona 85259
A. Chaudhary
Affiliation:
Molecular Taxonomy Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, 250004, India
M. Sharifdini
Affiliation:
Department of Medical Parasitology and Mycology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
H. S. Singh
Affiliation:
Molecular Taxonomy Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, 250004, India Vice Chancellor, Maa Shakumbhari University, Punwarka, Saharanpur, Uttar Pradesh, 247120, India
*
Corresponding author: O.M. Amin; Email: omaramin@aol.com
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Abstract

An isolated population of 700 specimens initially described as Corynosoma strumosum (Rudolphi, 1802) Lühe, 1904 and currently reassigned to Corynosoma neostrumosum n. sp. was collected from one young male Caspian seal, Pusa caspica (Gmelin) in the southern land-locked Caspian Sea in April 2009. Collected worms were morphologically unique compared with those reported by other observers in open waters, especially in shape and distribution of proboscis hooks and trunk spines, dorso-ventral differences in proboscis hooks and their organization, the baldness of anterior proboscis, consistently smaller size of trunk and testes, larger eggs, the rough egg topography, epidermal micropores, and variations in the female gonopore. Molecular data from the internal transcribed spacer region of rDNA and the mitochondrial cox1 gene was also provided to supplement the morphological study of the new species.

Keywords

Corynosoma neostrumosum n. sp.Caspian sealmolecular analysis

Information

Type
Research Paper
Information
Journal of Helminthology , Volume 97 , 2023 , e66
Copyright
© The Author(s), 2023. Published by Cambridge University Press

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Footnotes

The online version of this article has been updated since original publication. A notice detailing the change has also been published.

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