Artículo
Shell variability in Tawera gayi (Veneridae) from southern SouthAmerica: A morphometric approach based on contour analysis
Fecha de publicación:
06/2011
Editorial:
Cambridge University Press
Revista:
Journal of the Marine Biological Association of the United Kingdom
ISSN:
0025-3154
e-ISSN:
1469-7769
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This study analyses the significance of shell morphological variations in the venerid clam Tawera gayi, a typical element of shallow marine soft bottoms in southern South America and the most common species recovered from Late Quaternary marine deposits along the Beagle Channel, Tierra del Fuego. Fossil and modern Tawera shells from different localities around the southern tip of South America were analysed using the Elliptic Fourier Analysis (EFA) method. Taking into account the palaeontological history of this genus in the southern hemisphere, EFA was also performed on shells of Tawera congeners from South Africa (T. philomela) and New Zealand (T. spissa). The use of EFA permitted the distinction between the three Tawera species and geographical differentiation in the T. gayi groups. These morphological variations of T. gayi appear best related to ecophenotypic plasticity as a response to different environmental conditions, although the palaeobiogeographical history of Tawera in South America cannot be ruled out.
Palabras clave:
BIVALVIA
,
MAGELLAN REGION
,
MORPHOMETIRCS
,
SHELL SHAPE
,
TAWERA GAYI
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT-CENPAT)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Articulos(CICTERRA)
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Citación
Gordillo, Sandra; Marquez, Federico; Cardenas, Javiera; Zubimendi, Miguel Angel; Shell variability in Tawera gayi (Veneridae) from southern SouthAmerica: A morphometric approach based on contour analysis; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 91; 4; 6-2011; 815-822
Compartir
Altmétricas