Thorny-headed worms

Neoechinorhynchus (Neoechinorhynchus) dorsovaginatus n. sp. (Acanthocephala: Neoechinorhynchidae) from the dusky kob Argyrosomus japonicus (Sciaenidae) on the southern coast of South Africa

Publication Type:Journal Article
Year of Publication:2005
Authors:O. M. Amin, Christison K. W.
Journal:Systematic ParasitologySyst. Parasitol.
Pagination:173 - 179
Date Published:2005///
ISBN Number:01655752 (ISSN)
Keywords:Acanthocephala, Acanthocephalus, animal, Animals, Argyrosomus japonicus, article, classification, histology, Kobus kob, Male, Neoechinorhynchidae, Neoechinorhynchus, Neoechinorhynchus africanus, Neoechinorhynchus johnii, Neoechinorhynchus topseyi, Neoechinorhynchus tylosuri, Parasitology, Perciformes, Rectum, river, Rivers, season, Seasons, South Africa

Neoechinorhynchus (Neoechinorhynchus) dorsovaginatus n. sp. (Acanthocephala: Neoechinorhynchidae) is described from the dusky kob, Argyrosomus japonicus (Temminck & Schlegel) from the southern coast of South Africa in the Breede River Estuary. Like four other species of Neoechinorhynchus Stiles & Hassall, 1905, N. (N.) africanus Troncy, 1969, N. (N.) johnii Yamaguti, 1939, N. topseyi Podder, 1937 and N. (N.) tylosuri Yamaguti, 1939, the new species has a very long, slender body, cylindrical testes and cement-gland, anterior proboscis hooks much longer than the middle or posterior hooks, and a long neck. The new species is the only species of Neoechinorynchus having an antero-dorsal hump just posterior to the neck and a specialised vaginal sphincter and a gonopore on the dorsal side. It is closest to N. (N.) johnii, but is distinguished from it by: the size of the trunk, proboscis, anterior proboscis hooks, neck, and the posterior testis in relation to the cement-gland; the shape of cerebral ganglion and proboscis hook root; and the number of giant nuclei in the cement-gland. © Springer 2005.

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