Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods
- Autores
- Cristini, Paula Andrea; Bayer, María Sol
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Molluscan death assemblages are useful for reconstructing paleocommunities. In spite thatmolluscan predators are rarely preserved in Quaternary marine sediments, they provide signals forevaluating predation recorded as round holes in shells, recognized as the trace fossil Oichnus. Onthe other hand, the bivalve Glycymeris longior is one of the most abundant species found in fossiland modern shell assemblages from the coasts of Buenos Aires Province. Glycymeris longior livesat the surf zone, between the intertidal zone and 20 m depth. Their shells are robust and can resistthe taphonomically active zone, which allows recording the postmortem history of shells. The highabundance of G. longior at Mar del Plata?s coasts suggests that this species could be an importantprey item on the food web. Thus, our study aims to identify Oichnus ichnospecies in G. longiorshells to unveil the possible gastropod predators in modern death assemblages from Mar del Plata.Therefore, we took samples from the high tide line with a quadrat (50 cm x 50 cm) from twobeaches of Mar del Plata. Samples were washed in a 1 mm diameter sieve mesh and 1165 valveswere recovered from Unzué Beach (UB) and 202 valves from Camet Norte Beach (CNB). Shelllengths were measured and Oichnus ichnospecies were identified in G. longior shells. This bivalvecorresponded to 41.8% and 77.7% of the total assemblages in UB and CNB respectively, and therewere no drilling gastropods except the only specimen of the muricean Urosalpinx cala found at UB.However, the 10.7% and 3.2% of G. longior shells from both assemblages exhibited the presence ofdrill holes, specifically Oichnus paraboloides, which possible producers are naticid gastropods.Shell sizes varied between 5.29 mm and 17.19 mm in UB (a sandy beach) and between 19.21 mmand 39.28 mm in CNB (an abrasion platform beach). We expect that smaller shells of G. longior(less robust than larger ones) are more prone to be successfully attacked by gastropods predatorsthan larger ones. In addition, 100% of Oichnus records corresponded to O. paraboloides of smallsizes. Moreover, a higher proportion of these traces were recorded in the sandy bottom assemblage(UB). This might correspond to a predation pressure produced by small-sized naticid gastropods,with low chances to be preserved in the shell assemblage. However, predation pressure is evidenced by drill holes in small shells of G. longior.
Fil: Cristini, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Bayer, María Sol. 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
Reunión de Comunicaciones de la Asociación Paleontológica Argentina 2022
Salta
Argentina
Asociación Paleontológica Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Bio y Geociencias del Noroeste Argentino
Universidad Nacional de Salta. Instituto para el Estudio de la Biodiversidad de Invertebrados
Universidad Nacional de Salta. Colección Naturales Salta - Materia
-
GLYCYMERIS LONGIOR
PREDATION
OICHNUS
BONAERENSE COAST - 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:11336/271597
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Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropodsCristini, Paula AndreaBayer, María SolGLYCYMERIS LONGIORPREDATIONOICHNUSBONAERENSE COASThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Molluscan death assemblages are useful for reconstructing paleocommunities. In spite thatmolluscan predators are rarely preserved in Quaternary marine sediments, they provide signals forevaluating predation recorded as round holes in shells, recognized as the trace fossil Oichnus. Onthe other hand, the bivalve Glycymeris longior is one of the most abundant species found in fossiland modern shell assemblages from the coasts of Buenos Aires Province. Glycymeris longior livesat the surf zone, between the intertidal zone and 20 m depth. Their shells are robust and can resistthe taphonomically active zone, which allows recording the postmortem history of shells. The highabundance of G. longior at Mar del Plata?s coasts suggests that this species could be an importantprey item on the food web. Thus, our study aims to identify Oichnus ichnospecies in G. longiorshells to unveil the possible gastropod predators in modern death assemblages from Mar del Plata.Therefore, we took samples from the high tide line with a quadrat (50 cm x 50 cm) from twobeaches of Mar del Plata. Samples were washed in a 1 mm diameter sieve mesh and 1165 valveswere recovered from Unzué Beach (UB) and 202 valves from Camet Norte Beach (CNB). Shelllengths were measured and Oichnus ichnospecies were identified in G. longior shells. This bivalvecorresponded to 41.8% and 77.7% of the total assemblages in UB and CNB respectively, and therewere no drilling gastropods except the only specimen of the muricean Urosalpinx cala found at UB.However, the 10.7% and 3.2% of G. longior shells from both assemblages exhibited the presence ofdrill holes, specifically Oichnus paraboloides, which possible producers are naticid gastropods.Shell sizes varied between 5.29 mm and 17.19 mm in UB (a sandy beach) and between 19.21 mmand 39.28 mm in CNB (an abrasion platform beach). We expect that smaller shells of G. longior(less robust than larger ones) are more prone to be successfully attacked by gastropods predatorsthan larger ones. In addition, 100% of Oichnus records corresponded to O. paraboloides of smallsizes. Moreover, a higher proportion of these traces were recorded in the sandy bottom assemblage(UB). This might correspond to a predation pressure produced by small-sized naticid gastropods,with low chances to be preserved in the shell assemblage. However, predation pressure is evidenced by drill holes in small shells of G. longior.Fil: Cristini, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Bayer, María Sol. 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; ArgentinaReunión de Comunicaciones de la Asociación Paleontológica Argentina 2022SaltaArgentinaAsociación Paleontológica ArgentinaConsejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Bio y Geociencias del Noroeste ArgentinoUniversidad Nacional de Salta. Instituto para el Estudio de la Biodiversidad de InvertebradosUniversidad Nacional de Salta. Colección Naturales SaltaAsociación Paleontológica Argentina2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/271597Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods; Reunión de Comunicaciones de la Asociación Paleontológica Argentina 2022; Salta; Argentina; 2022; 51-512469-0228CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://peapaleontologica.org.ar//index.php/peapa/article/view/462Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:28Zoai:ri.conicet.gov.ar:11336/271597instacron: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 10:43:29.188CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
title |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
spellingShingle |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods Cristini, Paula Andrea GLYCYMERIS LONGIOR PREDATION OICHNUS BONAERENSE COAST |
title_short |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
title_full |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
title_fullStr |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
title_full_unstemmed |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
title_sort |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods |
dc.creator.none.fl_str_mv |
Cristini, Paula Andrea Bayer, María Sol |
author |
Cristini, Paula Andrea |
author_facet |
Cristini, Paula Andrea Bayer, María Sol |
author_role |
author |
author2 |
Bayer, María Sol |
author2_role |
author |
dc.subject.none.fl_str_mv |
GLYCYMERIS LONGIOR PREDATION OICHNUS BONAERENSE COAST |
topic |
GLYCYMERIS LONGIOR PREDATION OICHNUS BONAERENSE COAST |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Molluscan death assemblages are useful for reconstructing paleocommunities. In spite thatmolluscan predators are rarely preserved in Quaternary marine sediments, they provide signals forevaluating predation recorded as round holes in shells, recognized as the trace fossil Oichnus. Onthe other hand, the bivalve Glycymeris longior is one of the most abundant species found in fossiland modern shell assemblages from the coasts of Buenos Aires Province. Glycymeris longior livesat the surf zone, between the intertidal zone and 20 m depth. Their shells are robust and can resistthe taphonomically active zone, which allows recording the postmortem history of shells. The highabundance of G. longior at Mar del Plata?s coasts suggests that this species could be an importantprey item on the food web. Thus, our study aims to identify Oichnus ichnospecies in G. longiorshells to unveil the possible gastropod predators in modern death assemblages from Mar del Plata.Therefore, we took samples from the high tide line with a quadrat (50 cm x 50 cm) from twobeaches of Mar del Plata. Samples were washed in a 1 mm diameter sieve mesh and 1165 valveswere recovered from Unzué Beach (UB) and 202 valves from Camet Norte Beach (CNB). Shelllengths were measured and Oichnus ichnospecies were identified in G. longior shells. This bivalvecorresponded to 41.8% and 77.7% of the total assemblages in UB and CNB respectively, and therewere no drilling gastropods except the only specimen of the muricean Urosalpinx cala found at UB.However, the 10.7% and 3.2% of G. longior shells from both assemblages exhibited the presence ofdrill holes, specifically Oichnus paraboloides, which possible producers are naticid gastropods.Shell sizes varied between 5.29 mm and 17.19 mm in UB (a sandy beach) and between 19.21 mmand 39.28 mm in CNB (an abrasion platform beach). We expect that smaller shells of G. longior(less robust than larger ones) are more prone to be successfully attacked by gastropods predatorsthan larger ones. In addition, 100% of Oichnus records corresponded to O. paraboloides of smallsizes. Moreover, a higher proportion of these traces were recorded in the sandy bottom assemblage(UB). This might correspond to a predation pressure produced by small-sized naticid gastropods,with low chances to be preserved in the shell assemblage. However, predation pressure is evidenced by drill holes in small shells of G. longior. Fil: Cristini, Paula Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Bayer, María Sol. 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 Reunión de Comunicaciones de la Asociación Paleontológica Argentina 2022 Salta Argentina Asociación Paleontológica Argentina Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Bio y Geociencias del Noroeste Argentino Universidad Nacional de Salta. Instituto para el Estudio de la Biodiversidad de Invertebrados Universidad Nacional de Salta. Colección Naturales Salta |
description |
Molluscan death assemblages are useful for reconstructing paleocommunities. In spite thatmolluscan predators are rarely preserved in Quaternary marine sediments, they provide signals forevaluating predation recorded as round holes in shells, recognized as the trace fossil Oichnus. Onthe other hand, the bivalve Glycymeris longior is one of the most abundant species found in fossiland modern shell assemblages from the coasts of Buenos Aires Province. Glycymeris longior livesat the surf zone, between the intertidal zone and 20 m depth. Their shells are robust and can resistthe taphonomically active zone, which allows recording the postmortem history of shells. The highabundance of G. longior at Mar del Plata?s coasts suggests that this species could be an importantprey item on the food web. Thus, our study aims to identify Oichnus ichnospecies in G. longiorshells to unveil the possible gastropod predators in modern death assemblages from Mar del Plata.Therefore, we took samples from the high tide line with a quadrat (50 cm x 50 cm) from twobeaches of Mar del Plata. Samples were washed in a 1 mm diameter sieve mesh and 1165 valveswere recovered from Unzué Beach (UB) and 202 valves from Camet Norte Beach (CNB). Shelllengths were measured and Oichnus ichnospecies were identified in G. longior shells. This bivalvecorresponded to 41.8% and 77.7% of the total assemblages in UB and CNB respectively, and therewere no drilling gastropods except the only specimen of the muricean Urosalpinx cala found at UB.However, the 10.7% and 3.2% of G. longior shells from both assemblages exhibited the presence ofdrill holes, specifically Oichnus paraboloides, which possible producers are naticid gastropods.Shell sizes varied between 5.29 mm and 17.19 mm in UB (a sandy beach) and between 19.21 mmand 39.28 mm in CNB (an abrasion platform beach). We expect that smaller shells of G. longior(less robust than larger ones) are more prone to be successfully attacked by gastropods predatorsthan larger ones. In addition, 100% of Oichnus records corresponded to O. paraboloides of smallsizes. Moreover, a higher proportion of these traces were recorded in the sandy bottom assemblage(UB). This might correspond to a predation pressure produced by small-sized naticid gastropods,with low chances to be preserved in the shell assemblage. However, predation pressure is evidenced by drill holes in small shells of G. longior. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Reunión Journal http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
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publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/271597 Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods; Reunión de Comunicaciones de la Asociación Paleontológica Argentina 2022; Salta; Argentina; 2022; 51-51 2469-0228 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/271597 |
identifier_str_mv |
Predation evidence in the bonaerense coast: Glycymeris longior (Bivalvia) as a possible victim of gastropods; Reunión de Comunicaciones de la Asociación Paleontológica Argentina 2022; Salta; Argentina; 2022; 51-51 2469-0228 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://peapaleontologica.org.ar//index.php/peapa/article/view/462 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Nacional |
dc.publisher.none.fl_str_mv |
Asociación Paleontológica Argentina |
publisher.none.fl_str_mv |
Asociación Paleontológica Argentina |
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) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |