Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast

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Anisakid nematodes have a worldwide distribution and are associated with fishes, birds, and marine mammals from freshwater, brackish, and marine systems. The aims of this work are to report for the first time Contracaecum mirounga parasitizing the Magellanic penguin Spheniscus magellanicus, to repor...

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Autores principales:	Garbin, Lucas E., Diaz, Julia Inés, Navone, Graciela Teresa
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2019
Materias:	Biología Zoología Sibling species Anisakidae Spheniscus magellanicus Contracaecum pelagicum Spheniscidae Caudal papillae Contracaecinae Interlabial morphology Península valdés Río de la plata Contracaecum mirounga Contracaeceum spheniscus
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124471
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124471
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Biología Zoología Sibling species Anisakidae Spheniscus magellanicus Contracaecum pelagicum Spheniscidae Caudal papillae Contracaecinae Interlabial morphology Península valdés Río de la plata Contracaecum mirounga Contracaeceum spheniscus
spellingShingle	Biología Zoología Sibling species Anisakidae Spheniscus magellanicus Contracaecum pelagicum Spheniscidae Caudal papillae Contracaecinae Interlabial morphology Península valdés Río de la plata Contracaecum mirounga Contracaeceum spheniscus Garbin, Lucas E. Diaz, Julia Inés Navone, Graciela Teresa Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
topic_facet	Biología Zoología Sibling species Anisakidae Spheniscus magellanicus Contracaecum pelagicum Spheniscidae Caudal papillae Contracaecinae Interlabial morphology Península valdés Río de la plata Contracaecum mirounga Contracaeceum spheniscus
description	Anisakid nematodes have a worldwide distribution and are associated with fishes, birds, and marine mammals from freshwater, brackish, and marine systems. The aims of this work are to report for the first time Contracaecum mirounga parasitizing the Magellanic penguin Spheniscus magellanicus, to report another Contracaecum species in the same host species, and to discuss the validity of Contracaeceum spheniscus. Several dead chicks, juveniles, and adults of S. magellanicus were collected along the Argentinean coast from 2002 to 2009. Nematodes were removed from digestive tracts and studied using both light and scanning electron microscopy. Nematode prevalences were 2.38% for C. mirounga and 12.5% for Contracaecum sp. Contracaecum mirounga was found in 1 penguin from Peninsula Valdes, Chubut. This species is known as a specific parasite of marine mammals such as Pinnipedia, thereby suggesting that this nematode is not as specific as believed. Another species of Contracaecum sp. was found parasitizing 1 penguin from the Rio de la Plata coast. It possessed an unusual interlabial morphology and arrangement of male caudal papillae. Despite the low prevalence, the distinct morphological features are convincing and support the presence of a new Contracaecum species. However, a formal description is not presented because sufficient male specimens are lacking. Finally, C. spheniscus is considered a junior synonym of Contracaecum pelagicum. Future molecular studies might be helpful to determine the real diversity of Contracaecum species parasitizing S. magellanicus considering the number of sibling species recognized among the anisakids.
format	Articulo Articulo
author	Garbin, Lucas E. Diaz, Julia Inés Navone, Graciela Teresa
author_facet	Garbin, Lucas E. Diaz, Julia Inés Navone, Graciela Teresa
author_sort	Garbin, Lucas E.
title	Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
title_short	Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
title_full	Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
title_fullStr	Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
title_full_unstemmed	Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast
title_sort	species of contracaecum parasitizing the magellanic penguin spheniscus magellanicus (spheniscidae) from the argentinean coast
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/124471
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bdutipo_str	Repositorios
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Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast

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