Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast

Autores
Malvé, Mariano Ezequiel; Rivadeneira Valenzuela, Marcelo Michel; Gordillo, Sandra
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Broad-scale latitudinal morphological trends in gastropods along the southwestern Atlantic coast are scant, since the majority of studies have focused on local scales. Here, we evaluate biogeographic shell shape variation in the marine gastropod Trophon geversianus across most of its distributional range, covering 14 degrees of latitude. Samples come from death assemblages which have the potential to unveil biogeographic patterns along spatio-temporal scales and are not affected by short-term volatility in comparison with living assemblages. We performed morphometric analyses on shells from death assemblages, and compared shape variation between mid-Holocene and modern shells from one southern site. Multivariate analyses identified two morphotypes matching the biogeographic regions of the Argentine Sea that segregates a warm-temperate from a cold-temperate zone. The Magellan province morphotype is characterized by a larger shell, lower spire height, and higher aperture length than the Argentinean province morphotype. This change in shell shape is significantly correlated to sea surface temperature, even after accounting for spatial autocorrelation, which could be indirectly influencing intraspecific morphoclines via shifts in growth rates. On the other side, shell size and shape variations were also detected (size increase over recent geological time) between mid-Holocene and modern specimens at the Beagle Channel, which could be attributed to paleoenvironmental changes and to shifts in predator-prey relationships. Our study illustrates the usefulness of death assemblages for revealing large-scale patterns of shell-shape variability in mollusk species, and highlights the spatial coincidence of intraspecific morphological differentiation with the transition zone between biogeographic provinces of the Argentine Sea.
Fil: Malvé, Mariano Ezequiel. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Rivadeneira Valenzuela, Marcelo Michel. Centro de Estudios Avanzados En Zonas Áridas (ceaza); Chile. Universidad Católica del Norte; Chile. Universidad de La Serena; Chile. Centro de Estudios Avanzados en Zonas Áridas; Chile
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
death assemblages
Patagonia
biogeography
morphometry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88343
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coastMalvé, Mariano EzequielRivadeneira Valenzuela, Marcelo MichelGordillo, Sandradeath assemblagesPatagoniabiogeographymorphometryhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Broad-scale latitudinal morphological trends in gastropods along the southwestern Atlantic coast are scant, since the majority of studies have focused on local scales. Here, we evaluate biogeographic shell shape variation in the marine gastropod Trophon geversianus across most of its distributional range, covering 14 degrees of latitude. Samples come from death assemblages which have the potential to unveil biogeographic patterns along spatio-temporal scales and are not affected by short-term volatility in comparison with living assemblages. We performed morphometric analyses on shells from death assemblages, and compared shape variation between mid-Holocene and modern shells from one southern site. Multivariate analyses identified two morphotypes matching the biogeographic regions of the Argentine Sea that segregates a warm-temperate from a cold-temperate zone. The Magellan province morphotype is characterized by a larger shell, lower spire height, and higher aperture length than the Argentinean province morphotype. This change in shell shape is significantly correlated to sea surface temperature, even after accounting for spatial autocorrelation, which could be indirectly influencing intraspecific morphoclines via shifts in growth rates. On the other side, shell size and shape variations were also detected (size increase over recent geological time) between mid-Holocene and modern specimens at the Beagle Channel, which could be attributed to paleoenvironmental changes and to shifts in predator-prey relationships. Our study illustrates the usefulness of death assemblages for revealing large-scale patterns of shell-shape variability in mollusk species, and highlights the spatial coincidence of intraspecific morphological differentiation with the transition zone between biogeographic provinces of the Argentine Sea.Fil: Malvé, Mariano Ezequiel. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Rivadeneira Valenzuela, Marcelo Michel. Centro de Estudios Avanzados En Zonas Áridas (ceaza); Chile. Universidad Católica del Norte; Chile. Universidad de La Serena; Chile. Centro de Estudios Avanzados en Zonas Áridas; ChileFil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaSociety for Sedimentary Geology2018-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88343Malvé, Mariano Ezequiel; Rivadeneira Valenzuela, Marcelo Michel; Gordillo, Sandra; Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast; Society for Sedimentary Geology; Palaios; 33; 11; 11-2018; 498-5070883-1351CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2018.060info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/sepm/palaios/article/33/11/498/566709/BIOGEOGRAPHIC-SHELL-SHAPE-VARIATION-IN-TROPHONinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:01:19Zoai:ri.conicet.gov.ar:11336/88343instacron: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:34982025-10-22 11:01:19.727CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
title Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
spellingShingle Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
Malvé, Mariano Ezequiel
death assemblages
Patagonia
biogeography
morphometry
title_short Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
title_full Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
title_fullStr Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
title_full_unstemmed Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
title_sort Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast
dc.creator.none.fl_str_mv Malvé, Mariano Ezequiel
Rivadeneira Valenzuela, Marcelo Michel
Gordillo, Sandra
author Malvé, Mariano Ezequiel
author_facet Malvé, Mariano Ezequiel
Rivadeneira Valenzuela, Marcelo Michel
Gordillo, Sandra
author_role author
author2 Rivadeneira Valenzuela, Marcelo Michel
Gordillo, Sandra
author2_role author
author
dc.subject.none.fl_str_mv death assemblages
Patagonia
biogeography
morphometry
topic death assemblages
Patagonia
biogeography
morphometry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Broad-scale latitudinal morphological trends in gastropods along the southwestern Atlantic coast are scant, since the majority of studies have focused on local scales. Here, we evaluate biogeographic shell shape variation in the marine gastropod Trophon geversianus across most of its distributional range, covering 14 degrees of latitude. Samples come from death assemblages which have the potential to unveil biogeographic patterns along spatio-temporal scales and are not affected by short-term volatility in comparison with living assemblages. We performed morphometric analyses on shells from death assemblages, and compared shape variation between mid-Holocene and modern shells from one southern site. Multivariate analyses identified two morphotypes matching the biogeographic regions of the Argentine Sea that segregates a warm-temperate from a cold-temperate zone. The Magellan province morphotype is characterized by a larger shell, lower spire height, and higher aperture length than the Argentinean province morphotype. This change in shell shape is significantly correlated to sea surface temperature, even after accounting for spatial autocorrelation, which could be indirectly influencing intraspecific morphoclines via shifts in growth rates. On the other side, shell size and shape variations were also detected (size increase over recent geological time) between mid-Holocene and modern specimens at the Beagle Channel, which could be attributed to paleoenvironmental changes and to shifts in predator-prey relationships. Our study illustrates the usefulness of death assemblages for revealing large-scale patterns of shell-shape variability in mollusk species, and highlights the spatial coincidence of intraspecific morphological differentiation with the transition zone between biogeographic provinces of the Argentine Sea.
Fil: Malvé, Mariano Ezequiel. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Rivadeneira Valenzuela, Marcelo Michel. Centro de Estudios Avanzados En Zonas Áridas (ceaza); Chile. Universidad Católica del Norte; Chile. Universidad de La Serena; Chile. Centro de Estudios Avanzados en Zonas Áridas; Chile
Fil: Gordillo, Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description Broad-scale latitudinal morphological trends in gastropods along the southwestern Atlantic coast are scant, since the majority of studies have focused on local scales. Here, we evaluate biogeographic shell shape variation in the marine gastropod Trophon geversianus across most of its distributional range, covering 14 degrees of latitude. Samples come from death assemblages which have the potential to unveil biogeographic patterns along spatio-temporal scales and are not affected by short-term volatility in comparison with living assemblages. We performed morphometric analyses on shells from death assemblages, and compared shape variation between mid-Holocene and modern shells from one southern site. Multivariate analyses identified two morphotypes matching the biogeographic regions of the Argentine Sea that segregates a warm-temperate from a cold-temperate zone. The Magellan province morphotype is characterized by a larger shell, lower spire height, and higher aperture length than the Argentinean province morphotype. This change in shell shape is significantly correlated to sea surface temperature, even after accounting for spatial autocorrelation, which could be indirectly influencing intraspecific morphoclines via shifts in growth rates. On the other side, shell size and shape variations were also detected (size increase over recent geological time) between mid-Holocene and modern specimens at the Beagle Channel, which could be attributed to paleoenvironmental changes and to shifts in predator-prey relationships. Our study illustrates the usefulness of death assemblages for revealing large-scale patterns of shell-shape variability in mollusk species, and highlights the spatial coincidence of intraspecific morphological differentiation with the transition zone between biogeographic provinces of the Argentine Sea.
publishDate 2018
dc.date.none.fl_str_mv 2018-11
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/11336/88343
Malvé, Mariano Ezequiel; Rivadeneira Valenzuela, Marcelo Michel; Gordillo, Sandra; Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast; Society for Sedimentary Geology; Palaios; 33; 11; 11-2018; 498-507
0883-1351
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88343
identifier_str_mv Malvé, Mariano Ezequiel; Rivadeneira Valenzuela, Marcelo Michel; Gordillo, Sandra; Biogeographic shell shape variation in trophon Geversianus (gastropoda: muricidae) along the Southwestern Atlantic coast; Society for Sedimentary Geology; Palaios; 33; 11; 11-2018; 498-507
0883-1351
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.2110/palo.2018.060
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/sepm/palaios/article/33/11/498/566709/BIOGEOGRAPHIC-SHELL-SHAPE-VARIATION-IN-TROPHON
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
application/pdf
dc.publisher.none.fl_str_mv Society for Sedimentary Geology
publisher.none.fl_str_mv Society for Sedimentary Geology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection 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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score 12.982451

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