Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)

Polinices marambioensis is a naticid gastropod which is the most common constituent in fossil accumulations in the upper section of the Cucullaea I Allomember (Middle Eocene) of the La Meseta Formation in James Ross Basin, Antarctic Peninsula. This species was an important predator of infaunal bival...

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Detalles Bibliográficos
Autores principales:	Brezina, S.S., Cech, N., Serralta, D.M., Casadío, S.
Formato:	JOUR
Materias:	drilling traces gastropods predation predator-prey behaviour Bivalvia Cucullaea Gastropoda Naticidae Oichnus paraboloides Polinices
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09541020_v28_n3_p205_Brezina
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_09541020_v28_n3_p205_Brezina
record_format	dspace
spelling	todo:paper_09541020_v28_n3_p205_Brezina2023-10-03T15:51:38Z Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica) Brezina, S.S. Cech, N. Serralta, D.M. Casadío, S. drilling traces gastropods predation predator-prey behaviour Bivalvia Cucullaea Gastropoda Naticidae Oichnus paraboloides Polinices Polinices marambioensis is a naticid gastropod which is the most common constituent in fossil accumulations in the upper section of the Cucullaea I Allomember (Middle Eocene) of the La Meseta Formation in James Ross Basin, Antarctic Peninsula. This species was an important predator of infaunal bivalves and gastropods, including other naticids. The aim of this work was to assess the pattern of predation and cannibalistic behaviour of P. marambioensis. A total of 2648 specimens of P. marambioensis were examined for drill holes, which were assigned to Oichnus paraboloides. Drilling frequency data were measured as a proxy for predation intensity and statistical analyses were performed. Further, the site of each drill hole was established according to the morphological features of the shell on each specimen to assess possible preference of predators for the site of perforation. Results suggest that P. marambioensis is an efficient cannibalistic predator for a specific size range of prey (8-22 mm), and drill holes are distributed preferentially in two specific sectors of their shells. This selective cannibalistic prey behaviour in P. marambioensis affected not only the dynamics of their populations but the ecological structure of the community in which they lived. © Antarctic Science Ltd 2016. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09541020_v28_n3_p205_Brezina
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	drilling traces gastropods predation predator-prey behaviour Bivalvia Cucullaea Gastropoda Naticidae Oichnus paraboloides Polinices
spellingShingle	drilling traces gastropods predation predator-prey behaviour Bivalvia Cucullaea Gastropoda Naticidae Oichnus paraboloides Polinices Brezina, S.S. Cech, N. Serralta, D.M. Casadío, S. Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
topic_facet	drilling traces gastropods predation predator-prey behaviour Bivalvia Cucullaea Gastropoda Naticidae Oichnus paraboloides Polinices
description	Polinices marambioensis is a naticid gastropod which is the most common constituent in fossil accumulations in the upper section of the Cucullaea I Allomember (Middle Eocene) of the La Meseta Formation in James Ross Basin, Antarctic Peninsula. This species was an important predator of infaunal bivalves and gastropods, including other naticids. The aim of this work was to assess the pattern of predation and cannibalistic behaviour of P. marambioensis. A total of 2648 specimens of P. marambioensis were examined for drill holes, which were assigned to Oichnus paraboloides. Drilling frequency data were measured as a proxy for predation intensity and statistical analyses were performed. Further, the site of each drill hole was established according to the morphological features of the shell on each specimen to assess possible preference of predators for the site of perforation. Results suggest that P. marambioensis is an efficient cannibalistic predator for a specific size range of prey (8-22 mm), and drill holes are distributed preferentially in two specific sectors of their shells. This selective cannibalistic prey behaviour in P. marambioensis affected not only the dynamics of their populations but the ecological structure of the community in which they lived. © Antarctic Science Ltd 2016.
format	JOUR
author	Brezina, S.S. Cech, N. Serralta, D.M. Casadío, S.
author_facet	Brezina, S.S. Cech, N. Serralta, D.M. Casadío, S.
author_sort	Brezina, S.S.
title	Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
title_short	Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
title_full	Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
title_fullStr	Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
title_full_unstemmed	Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)
title_sort	cannibalism in naticidae from the la meseta formation (eocene, antarctica)
url	http://hdl.handle.net/20.500.12110/paper_09541020_v28_n3_p205_Brezina
work_keys_str_mv	AT brezinass cannibalisminnaticidaefromthelamesetaformationeoceneantarctica AT cechn cannibalisminnaticidaefromthelamesetaformationeoceneantarctica AT serraltadm cannibalisminnaticidaefromthelamesetaformationeoceneantarctica AT casadios cannibalisminnaticidaefromthelamesetaformationeoceneantarctica
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Cannibalism in Naticidae from the la Meseta Formation (Eocene, Antarctica)

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