Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean
- Autores
- Signorelli, Javier Hernan; Scarabino, Fabrizio
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A common mactrid from the southwestern Atlantic Ocean has been largely misunderstood in the literature. Since the early 20th century, this species has been referred to as Mactra patagonica d'Orbigny, 1846. However, the latter is recorded in Quaternary deposits of Northern Patagonia. Mactra guidoi n. sp. is described herein, including its shell ultrastructure, hinge features, and soft parts, and compared with the holotype of M. patagonica. To compare and to correctly identify both species, a morphometric analysis was carried out using conventional and geometric morphometric methods. Mactra guidoi n. sp. has an elongate shell that is more fragile than that of M. patagonica. In addition, its ventral posterior edge is usually sinuous. The ultrastructure of the shell reveals two layers with cross lamellar structure. The anatomical features agree with those of the congeneric M. isabelleana, although they differ in the morphology of the labial palps and foot. Morphometric analysis revealed significant differences between M. patagonica and the new species. The relative warp analysis allows us to understand the variation recognized by using CVA. Only M. patagonica revealed significant allometry between Relative Warp and Centroid size. Finally, the comparison of the types clearly points towards the existence of two different species.
Fil: Signorelli, Javier Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Scarabino, Fabrizio. Museo Nacional de Historia Natural y Antropologia; Uruguay - Materia
-
ANATOMY
GEOMETRIC
MACTRA
MORPHOMETRIC
SOUTHWESTERN ATLANTIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/94381
Ver los metadatos del registro completo
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spelling |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic OceanSignorelli, Javier HernanScarabino, FabrizioANATOMYGEOMETRICMACTRAMORPHOMETRICSOUTHWESTERN ATLANTIChttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1A common mactrid from the southwestern Atlantic Ocean has been largely misunderstood in the literature. Since the early 20th century, this species has been referred to as Mactra patagonica d'Orbigny, 1846. However, the latter is recorded in Quaternary deposits of Northern Patagonia. Mactra guidoi n. sp. is described herein, including its shell ultrastructure, hinge features, and soft parts, and compared with the holotype of M. patagonica. To compare and to correctly identify both species, a morphometric analysis was carried out using conventional and geometric morphometric methods. Mactra guidoi n. sp. has an elongate shell that is more fragile than that of M. patagonica. In addition, its ventral posterior edge is usually sinuous. The ultrastructure of the shell reveals two layers with cross lamellar structure. The anatomical features agree with those of the congeneric M. isabelleana, although they differ in the morphology of the labial palps and foot. Morphometric analysis revealed significant differences between M. patagonica and the new species. The relative warp analysis allows us to understand the variation recognized by using CVA. Only M. patagonica revealed significant allometry between Relative Warp and Centroid size. Finally, the comparison of the types clearly points towards the existence of two different species.Fil: Signorelli, Javier Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Scarabino, Fabrizio. Museo Nacional de Historia Natural y Antropologia; UruguayInstitute of Malacology2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/94381Signorelli, Javier Hernan; Scarabino, Fabrizio; Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean; Institute of Malacology; Malacologia; 52; 1; 1-2010; 31-420076-2997CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.4002/040.052.0103info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/malacologia/volume-52/issue-1/040.052.0103/Mactra-guidoi-n-sp-and-Mactra-patagonica-Bivalvia--Mactridae/10.4002/040.052.0103.shortinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:34Zoai:ri.conicet.gov.ar:11336/94381instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:16:34.327CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
title |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
spellingShingle |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean Signorelli, Javier Hernan ANATOMY GEOMETRIC MACTRA MORPHOMETRIC SOUTHWESTERN ATLANTIC |
title_short |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
title_full |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
title_fullStr |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
title_full_unstemmed |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
title_sort |
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean |
dc.creator.none.fl_str_mv |
Signorelli, Javier Hernan Scarabino, Fabrizio |
author |
Signorelli, Javier Hernan |
author_facet |
Signorelli, Javier Hernan Scarabino, Fabrizio |
author_role |
author |
author2 |
Scarabino, Fabrizio |
author2_role |
author |
dc.subject.none.fl_str_mv |
ANATOMY GEOMETRIC MACTRA MORPHOMETRIC SOUTHWESTERN ATLANTIC |
topic |
ANATOMY GEOMETRIC MACTRA MORPHOMETRIC SOUTHWESTERN ATLANTIC |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
A common mactrid from the southwestern Atlantic Ocean has been largely misunderstood in the literature. Since the early 20th century, this species has been referred to as Mactra patagonica d'Orbigny, 1846. However, the latter is recorded in Quaternary deposits of Northern Patagonia. Mactra guidoi n. sp. is described herein, including its shell ultrastructure, hinge features, and soft parts, and compared with the holotype of M. patagonica. To compare and to correctly identify both species, a morphometric analysis was carried out using conventional and geometric morphometric methods. Mactra guidoi n. sp. has an elongate shell that is more fragile than that of M. patagonica. In addition, its ventral posterior edge is usually sinuous. The ultrastructure of the shell reveals two layers with cross lamellar structure. The anatomical features agree with those of the congeneric M. isabelleana, although they differ in the morphology of the labial palps and foot. Morphometric analysis revealed significant differences between M. patagonica and the new species. The relative warp analysis allows us to understand the variation recognized by using CVA. Only M. patagonica revealed significant allometry between Relative Warp and Centroid size. Finally, the comparison of the types clearly points towards the existence of two different species. Fil: Signorelli, Javier Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Scarabino, Fabrizio. Museo Nacional de Historia Natural y Antropologia; Uruguay |
description |
A common mactrid from the southwestern Atlantic Ocean has been largely misunderstood in the literature. Since the early 20th century, this species has been referred to as Mactra patagonica d'Orbigny, 1846. However, the latter is recorded in Quaternary deposits of Northern Patagonia. Mactra guidoi n. sp. is described herein, including its shell ultrastructure, hinge features, and soft parts, and compared with the holotype of M. patagonica. To compare and to correctly identify both species, a morphometric analysis was carried out using conventional and geometric morphometric methods. Mactra guidoi n. sp. has an elongate shell that is more fragile than that of M. patagonica. In addition, its ventral posterior edge is usually sinuous. The ultrastructure of the shell reveals two layers with cross lamellar structure. The anatomical features agree with those of the congeneric M. isabelleana, although they differ in the morphology of the labial palps and foot. Morphometric analysis revealed significant differences between M. patagonica and the new species. The relative warp analysis allows us to understand the variation recognized by using CVA. Only M. patagonica revealed significant allometry between Relative Warp and Centroid size. Finally, the comparison of the types clearly points towards the existence of two different species. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/94381 Signorelli, Javier Hernan; Scarabino, Fabrizio; Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean; Institute of Malacology; Malacologia; 52; 1; 1-2010; 31-42 0076-2997 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/94381 |
identifier_str_mv |
Signorelli, Javier Hernan; Scarabino, Fabrizio; Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean; Institute of Malacology; Malacologia; 52; 1; 1-2010; 31-42 0076-2997 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.4002/040.052.0103 info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/malacologia/volume-52/issue-1/040.052.0103/Mactra-guidoi-n-sp-and-Mactra-patagonica-Bivalvia--Mactridae/10.4002/040.052.0103.short |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Institute of Malacology |
publisher.none.fl_str_mv |
Institute of Malacology |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614111932973056 |
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13.070432 |