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Orientatractis brycini sp. nov. (Nematoda: Atractidae) from characiform freshwater fishes in Gabon, Africa

Por: González Solís, David. Doctor [autor/a].
Mariaux, Jean [autor/a].
Tipo de material: Artículo
 en línea Artículo en línea Tema(s): Orientatractis brycini | Parásitos de peces | Brycinus macrolepidotus | Xenocharax spilurusTema(s) en inglés: Orientatractis brycini | Fishes parasites | Brycinus macrolepidotus | Xenocharax spilurusDescriptor(es) geográficos: Gabón (África)Nota de acceso: Acceso en línea sin restricciones En: Revue suisse de Zoologie. volumen 124, número 1 (March 2017), páginas 1-8. --ISSN: 0035-418XNúmero de sistema: 39886Resumen:
Inglés

The nematode Orientatractis brycini sp. nov. (Atractidae) is described from the intestine of Brycinus macrolepidotus Valenciennes (Alestidae) and Xenocharax spilurus Günther (Distichodontidae) collected in two localities from Gabon, Africa. The new species is characterized by the presence of four submedian lips with well-sclerotized pieces armed with two recurved pointed spines and one median large spine on their distal part, along with two smaller spines posterior to amphidial pores. It differs from its congeners mainly in the length of both spicules, gubernaculum, presence of two lateral spines posterior to amphids, distribution and number of caudal papillae. An emended generic diagnosis is provided. This is the eighth species in the genus Orientatractis, the fourth from fish hosts and the first from Africa, which expands its geographical distribution.

Recurso en línea: https://zenodo.org/record/322659#.Wv3gb_Uh0Y0
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Acceso en línea sin restricciones

The nematode Orientatractis brycini sp. nov. (Atractidae) is described from the intestine of Brycinus macrolepidotus Valenciennes (Alestidae) and Xenocharax spilurus Günther (Distichodontidae) collected in two localities from Gabon, Africa. The new species is characterized by the presence of four submedian lips with well-sclerotized pieces armed with two recurved pointed spines and one median large spine on their distal part, along with two smaller spines posterior to amphidial pores. It differs from its congeners mainly in the length of both spicules, gubernaculum, presence of two lateral spines posterior to amphids, distribution and number of caudal papillae. An emended generic diagnosis is provided. This is the eighth species in the genus Orientatractis, the fourth from fish hosts and the first from Africa, which expands its geographical distribution. eng

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