The Eoacanthocephala of North America, including the Description of Eocollis arcanus, New Genus and New Species, Superficially Resembling the Genus Pomphorhynchus

Hj, Van Cleave

doi:10.2307/3273357

Cited by 12 publications

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“…The Burgess Shale fauna contains numerous arthropods and their adoption as hosts by acanthocephala could date from about this time. If this did happen the incorporation of vertebrates into the life-cycle to form ultimately the primary hosts presumably occurred later (Van Cleave, 1947). The earliest vertebrates are Upper Cambrian fish (Repetski, 1977) but the acanthocephala may have invaded vertebrates at a later stage.…”

Section: Introductionmentioning

confidence: 99%

Parasites and the fossil record

Morris

1981

Parasitology

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Parasitologists are fond of alluding to the possible antiquity of their chosen group. They may even place the origin in a specific period of geological time and trace its co-evolution, or lack thereof, with the hosts. These speculations usually make only passing comments on the actual fossil record, but a critical examination suggests that this area can throw much light on both the origins and evolution of parasitism. This review is concerned primarily with the fossil record and its immediate implications. It does not appraise parasite evolution in the light of evidence from sources, often of excellent quality, such as comparative anatomy and physiology or ecology. As some parasitologists may not be entirely familiar with the geological column and time scale, Table 1 depicts these and indicates some records of parasitism mentioned here, together with the major events in this history of life.

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Section: Introductionmentioning

confidence: 99%

Parasites and the fossil record

Morris

1981

Parasitology

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Acanthocephala inThe Journal of Parasitology, 1914–2014

Amin¹

2016

A Century of Parasitology

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Mayarhynchus karlae n. g., n. sp. (Acanthocephala: Neoechinorhynchidae), a parasite of cichlids (Perciformes: Cichlidae) in southeastern Mexico, with comments on the paraphyly of Neoechynorhynchus Stiles & Hassall, 1905

et al. 2017

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Mayarhynchus n. g. (Acanthocephala: Neoechinorhynchidae) is erected for Mayarhynchus karlae n. g, n. sp. described from the intestine of four species of cichlid fishes distributed from southeastern Mexico. The new genus placed in the family Neoechinorhynchidae (Ward, 1917) Van Cleave, 1928, is readily distinguished from the other 17 genera in the family by having a small proboscis armed with 45-46 relatively weak rooted hooks arranged in nine longitudinal rows of five hooks each. In addition, Mayarhynchus n. g., n. sp. is diagnosed by the presence of a short trunk, body wall with five dorsal and one ventral giant hypodermal nuclei, proboscis receptacle nearly cylindrical with single layered wall, lemnisci broad and flat with large nuclei, testes in tandem, cement gland with eight large nuclei, and eggs elongate to oval. Partial sequences of the cytochrome c oxidase subunit 1 (cox1), internal transcribed spacers (ITS1 + 5.8S + ITS2), and the D2-D3 domains of the large subunit rRNA gene (28S) were obtained for five specimens of the new species and other species belonging to the Neoechinorhynchidae. Phylogenetic analyses confirmed that the new genus belongs to the Neoechynorhynchidae and indicated that the genus Neoechynorhynchus Stiles & Hassall, 1905 is not monophyletic. Comparison between three populations of the new species yielded nine variable sites for cox1, 11 for ITS and four for 28S.

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The Eoacanthocephala of North America, including the Description of Eocollis arcanus, New Genus and New Species, Superficially Resembling the Genus Pomphorhynchus

Cited by 12 publications

References 0 publications

Parasites and the fossil record

Parasites and the fossil record

Acanthocephala inThe Journal of Parasitology, 1914–2014

Mayarhynchus karlae n. g., n. sp. (Acanthocephala: Neoechinorhynchidae), a parasite of cichlids (Perciformes: Cichlidae) in southeastern Mexico, with comments on the paraphyly of Neoechynorhynchus Stiles & Hassall, 1905

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