Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)

The genus Aylacostoma Spix, 1827, is mainly endemic to South America, and comprises about 30 nominal species, most of which were described based solely on conchological features following the typological approaches of most of the 19th and the mid-20th century authors. Here, we redescribe Aylacostoma...

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Detalles Bibliográficos
Autores principales:	Vogler, Roberto E., Beltramino, Ariel Aníbal, Peso, Juana G., Rumi Macchi Zubiaurre, Alejandra
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2014
Materias:	Zoología Anatomy Asexually reproducing taxa Endangered freshwater snails Ex situ conservation programme Mitochondrial DNA.
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/127290
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-127290
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Zoología Anatomy Asexually reproducing taxa Endangered freshwater snails Ex situ conservation programme Mitochondrial DNA.
spellingShingle	Zoología Anatomy Asexually reproducing taxa Endangered freshwater snails Ex situ conservation programme Mitochondrial DNA. Vogler, Roberto E. Beltramino, Ariel Aníbal Peso, Juana G. Rumi Macchi Zubiaurre, Alejandra Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
topic_facet	Zoología Anatomy Asexually reproducing taxa Endangered freshwater snails Ex situ conservation programme Mitochondrial DNA.
description	The genus Aylacostoma Spix, 1827, is mainly endemic to South America, and comprises about 30 nominal species, most of which were described based solely on conchological features following the typological approaches of most of the 19th and the mid-20th century authors. Here, we redescribe Aylacostoma chloroticum Hylton Scott, 1954, and describe Aylacostoma brunneum sp. nov. from the High Paraná River (Argentina–Paraguay) by means of morphological and molecular characters. Both are threatened species currently included into an ongoing ex situ conservation programme, as their habitats have disappeared because of damming and the filling up of the Yacyretá Reservoir in the early 1990s. We used DNA sequences from cytochrome b and cytochrome oxidase subunit I (COI) genes to estimate their genetic distances, and the COI sequences were also used to assess their specific status under the evolutionary genetic species concept by means of the K/θ method. Our results clearly demonstrate that both must be recognized as evolutionary genetic species, despite only minor differences in morphological characters other than in the shells.
format	Articulo Articulo
author	Vogler, Roberto E. Beltramino, Ariel Aníbal Peso, Juana G. Rumi Macchi Zubiaurre, Alejandra
author_facet	Vogler, Roberto E. Beltramino, Ariel Aníbal Peso, Juana G. Rumi Macchi Zubiaurre, Alejandra
author_sort	Vogler, Roberto E.
title	Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
title_short	Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
title_full	Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
title_fullStr	Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
title_full_unstemmed	Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)
title_sort	threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus aylacostoma (gastropoda: thiaridae) from high paraná river (argentina–paraguay)
publishDate	2014
url	http://sedici.unlp.edu.ar/handle/10915/127290
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Threatened gastropods under the evolutionary genetic species concept: redescription and new species of the genus Aylacostoma (Gastropoda: Thiaridae) from High Paraná River (Argentina–Paraguay)

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