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Assessment of Megadenus holothuricola Rosén, 1910 (Eulimidae), an endoparasite of Holothuria mexicana Ludwig, 1875 (Holothuriidae) in the southern Gulf of Mexico and the description a new species

Por: González Vallejo, Norma Emilia. Doctora [autora].
Amador Carrillo, Stephanie [autora].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Megadenus holothuricola | Holothuria mexicana | Megadenus smithi | Gasterópodos | Parásitos | Relaciones huésped-patógenoTema(s) en inglés: Megadenus holothuricola | Holothuria mexicana | Megadenus smithi | Gastropoda | Parasites | Host-pathogen relationshipsDescriptor(es) geográficos: Bahía de Campeche, Campeche (Campeche, México) | Atolón PalmiraNota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: ZooKeys. Número 1016 (February 2021), páginas 49-61. --ISSN: 1313-2970Número de sistema: 60692Resumen:
Inglés

As part of a study on holothurians from the southern Gulf of Mexico, some Holothuria mexicana Ludwig, 1875 were obtained for gut analysis. In two of them, a couple of eulimids were located inside the main tube of the respiratory tree. They were identified as Megadenus holothuricola Rosén, 1910, described from the Bahamas Islands, based on five specimens attached to the respiratory tree of H. mexicana. The original description was brief with few details, the type material is lost, and the species has not been found again. In this contribution, this species is confirmed for Campeche Bay, Mexico. The adult shell is globular to conical, transparent, thin, and fragile. Megadenus smithi sp. nov. from Palmyra Atoll, Central Pacific is described based on adult specimens. It differs from its congeneric species in its more robust shell, the pseudopallium does not cover the shell, and its short and contracted proboscis forms a thick disc. Further research on these eulimid parasites is now complicated in the southern Gulf of Mexico because of the holothurian population collapse due to over-exploitation of the fishery.

Recurso en línea: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7892531/
Lista(s) en las que aparece este ítem: Norma Emilia González Vallejo
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Disponible para usuarios de ECOSUR con su clave de acceso

As part of a study on holothurians from the southern Gulf of Mexico, some Holothuria mexicana Ludwig, 1875 were obtained for gut analysis. In two of them, a couple of eulimids were located inside the main tube of the respiratory tree. They were identified as Megadenus holothuricola Rosén, 1910, described from the Bahamas Islands, based on five specimens attached to the respiratory tree of H. mexicana. The original description was brief with few details, the type material is lost, and the species has not been found again. In this contribution, this species is confirmed for Campeche Bay, Mexico. The adult shell is globular to conical, transparent, thin, and fragile. Megadenus smithi sp. nov. from Palmyra Atoll, Central Pacific is described based on adult specimens. It differs from its congeneric species in its more robust shell, the pseudopallium does not cover the shell, and its short and contracted proboscis forms a thick disc. Further research on these eulimid parasites is now complicated in the southern Gulf of Mexico because of the holothurian population collapse due to over-exploitation of the fishery. eng

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