Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics

Variation in shape among a living and 2 extinct aquatic snails of the genus Aylacostoma, using a geometric morphometric method of thin plate splines and multivariate analysis was investigated. The analysis was performed to evaluate the diagnostic capability of this method and to explore shell shape...

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Detalles Bibliográficos
Autores principales:	Vogler, Roberto Eugenio, Beltramino, Ariel Aníbal, Gutiérrez Gregoric, Diego Eduardo, Peso, Juana G., Griffin, Miguel, Rumi Macchi Zubiaurre, Alejandra
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2012
Materias:	Ciencias Naturales Argentina Aylacostoma Freshwater Native species TPS Agua Dulce Paraguay
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/84490
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-84490
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Argentina Aylacostoma Freshwater Native species TPS Agua Dulce Paraguay
spellingShingle	Ciencias Naturales Argentina Aylacostoma Freshwater Native species TPS Agua Dulce Paraguay Vogler, Roberto Eugenio Beltramino, Ariel Aníbal Gutiérrez Gregoric, Diego Eduardo Peso, Juana G. Griffin, Miguel Rumi Macchi Zubiaurre, Alejandra Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
topic_facet	Ciencias Naturales Argentina Aylacostoma Freshwater Native species TPS Agua Dulce Paraguay
description	Variation in shape among a living and 2 extinct aquatic snails of the genus Aylacostoma, using a geometric morphometric method of thin plate splines and multivariate analysis was investigated. The analysis was performed to evaluate the diagnostic capability of this method and to explore shell shape differences, due to the lack of other data, in an attempt to answer why only 1 of the species persisted in the wild. Sixteen landmarks in a bi-dimensional space for 32 shells of type, paratype and reference specimens deposited in museums of Argentina were defined. Analysis was successful in assigning individual specimens to particular species. Statistically significant differences in last whorl, aperture, and spire were found for the first 4 non-uniform components explaining an 85% of local variation observed. Differences could be related to a differential use of habitat and/or to the degree of exposure to water current. More globose shell found in the extinct species could be associated to habitats and substrata with the highest water currents, whereas the more stylized shell in the third species could be related to a preference for more protected habitats, like those where it presently occurs.
format	Articulo Articulo
author	Vogler, Roberto Eugenio Beltramino, Ariel Aníbal Gutiérrez Gregoric, Diego Eduardo Peso, Juana G. Griffin, Miguel Rumi Macchi Zubiaurre, Alejandra
author_facet	Vogler, Roberto Eugenio Beltramino, Ariel Aníbal Gutiérrez Gregoric, Diego Eduardo Peso, Juana G. Griffin, Miguel Rumi Macchi Zubiaurre, Alejandra
author_sort	Vogler, Roberto Eugenio
title	Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
title_short	Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
title_full	Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
title_fullStr	Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
title_full_unstemmed	Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
title_sort	threatened neotropical mollusks: analysis of shape differences in three endemic snails from high paraná river by geometric morphometrics
publishDate	2012
url	http://sedici.unlp.edu.ar/handle/10915/84490
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bdutipo_str	Repositorios
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Threatened Neotropical mollusks: Analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics

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