Category:Media from Ha et al. - 10.1051/parasite/2018032

Descriptions of acanthocephalans, Cathayacanthus spinitruncatus (Rhadinorhynchidae) male and Pararhadinorhynchus magnus n. sp. (Diplosentidae), from marine fish of Vietnam, with notes on Heterosentis holospinus (Arhythmacanthidae) 

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Instance of	scholarly article
Main subject	parasitology Pararhadinorhynchus Cathayacanthus Heterosentis Vietnam Arhythmacanthidae (Arhythmacanthidae) Diplosentidae (Diplosentidae) species nova Rhadinorhynchidae (Rhadinorhynchidae) Rhadinorhynchidae saltwater fish
Author	Omar M. Amin (2) Nguyen Van Ha (1) Ha Duy Ngo (3) Richard A. Heckmann (4)
Published in	Parasite
Copyright license	Creative Commons Attribution 4.0 International (2018–)
Publication date	23 July 2018
Authority file  Q55877612 DOI: 10.1051/PARASITE/2018032 PubMed ID: 30040609 PMCID: 6057740 ZooBank publication ID: C9B1AD9E-7182-41BF-BA64-87ECE73F5A14 Reasonator Scholia Wikidocumentaries PetScan statistics WikiMap Locator tool KML file Search depicted

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(2018). "Descriptions of acanthocephalans, Cathayacanthus spinitruncatus (Rhadinorhynchidae) male and Pararhadinorhynchus magnus n. sp. (Diplosentidae), from marine fish of Vietnam, with notes on Heterosentis holospinus (Arhythmacanthidae)". Parasite 25: 35. DOI:10.1051/parasite/2018032. ISSN 1776-1042.

Authors: Nguyen Van Ha, Omar M. Amin, Ha Duy Ngo and Richard A. Heckmann

Abstract

Males of Cathayacanthus spinitruncatus Amin, Heckmann & Ha, 2014 (Rhadinorhynchinae Lühe, 1912) are described for the first time from Leiognathus equulus in Hai Phong and Nha Trang and from pony fish Nuchequula flavaxilla in Quang Ninh in the Pacific waters of Vietnam. The male allotype status is designated. Males of C. spinitruncatus are smaller and have fewer and smaller proboscis hooks and trunk spines than females. The male reproductive structures are in the posterior fifth of the trunk and with 6 club-shaped cement glands gradually merging into 6 independent cement gland ducts. The proboscis receptacle is more than half as long as the trunk and with a cephalic ganglion at its anterior end. In females, the receptacle is only about one fifth the length of the trunk. Specimens described as Cathayacanthus bagarii Moravec & Sey, 1989 were shown to have been wrongly assigned to Cathayacanthus. Pararhadinorhynchus magnus n. sp. (Diplosentidae) is described from Scatophagus argus off Hai Phong in the Gulf of Tonkin. It is the third species of the genus and is readily distinguished from the Australian species by having a considerably larger trunk and male reproductive structures, and more proboscis hooks. X-ray microanalysis (EDAX) of intact and gallium-cut hooks of P. magnus showed high calcium and phosphate mainly in the central core. Specimens of Heterosentis holospinus Amin, Heckmann & Ha, 2011 (Arhythmacanthidae) are also reported from L. equulus off Quang Binh, new host and locality records.