Abstract
Neorhadinorhynchus nudus (Harada, 1938) Yamaguti, 1939 (Cavisomidae) was morphologically described from the frigate tuna Auxis thazard (Lacépède) (Scombridae) in Nha Trang, Pacific south Vietnam. Females of N. nudus were fully described for the first time in the Pacific. Its original inadequate description as Rhadinorhynchus nudus (Harada, 1938) was corrected in material from Fiji Island, the Red Sea and Pacific Vietnam and errors in the text and line drawings of Harada were repeated in subsequent major publications where it underwent considerable nomenclature changes. New descriptive and biogeographical notes are included. We also provided here the molecular characterization of the nuclear gene (18S) and the mitochondrial cytochrome c oxidase subunit 1 (cox1) sequence data of N. nudus. Furthermore, to elucidate the phylogenetic relationship of N. nudus within the family Cavisomidae and with other isolates were performed incorporating nuclear (18S) and mitochondrial (cox1) sequence data using maximum likelihood (ML) and Bayesian inference (BI). The phylogenetic results showed that N. nudus has a relationship with other isolates of the same species and the median-joining network showed the pattern of haplotypes that reflected the structure of the populations.
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Acknowledgements
This project was supported by an Institutional Grant from the Parasitology Center, Inc. (PCI), Scottsdale, Arizona. The authors thank the Head, Department of Zoology, Chaudhary Charan Singh University, Meerut, for providing laboratory facilities.
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OA. Wrote the manuscript except the molecular part. AC. Contributed the molecular text and figures. MS. Initial molecular analysis HS. Provided lab. support.
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Amin, O.M., Chaudhary, A., Sharifdini, M. et al. First molecular description of Neorhadinorhynchus nudus (Acanthocephala: Cavisomidae) from fish in the pacific coast of Vietnam, with notes on biogeography. Syst Parasitol 101, 23 (2024). https://doi.org/10.1007/s11230-023-10139-8
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DOI: https://doi.org/10.1007/s11230-023-10139-8