The first predatory drillhole on a fossil chiton plate: an occasional prey item or an erroneous attack?

Authors
Rojas, Alejandra; Verde, Mariano; Urteaga, Diego Gaston; Scarabino, Fabrizio; Martínez, Sergio
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
Drillholes represent direct evidence of ecological interactions in the fossil record. Most of them have been interpreted as predatory in origin and enable the analysis of behavioral information of both predator and prey. Drillholes have been found in a variety of fossil organisms, but this is the first report of a bored fossil chiton plate. It was found in the La Coronilla deposit, a Late Pleistocene invertebrate assemblage from southeastern Uruguay. The drillhole belongs to the ichnospecies Oichnus simplex and is attributed to a muricid gastropod, which could likely have been the ocenebrinid Urosalpinx haneti, recorded in the fossil assemblage. The drillhole features all traits for a predatory origin. However, the rareness of this particular interaction between chitons and gastropods in the fossil record and in the recent, could signify an event of arbitrary drilling. The reported occurrence here raises the question as to whether this behavior represents an understudied ecological interaction between polyplacophorans and gastropods.
Fil: Rojas, Alejandra. Universidad de la República. Facultad de Ciencias; Uruguay
Fil: Verde, Mariano. Universidad de la República. Facultad de Ciencias; Uruguay
Fil: Urteaga, Diego Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Scarabino, Fabrizio. Ministerio de Ganadería, Agricultura y Pesca; Uruguay
Fil: Martínez, Sergio. Universidad de la República. Facultad de Ciencias; Uruguay
Subject
PALEOECOLOGY
OICHNUS SIMPLEX
POLYPLACOPHORA
PLEISTOCENE
Oceanografía, Hidrología, Recursos Hídricos
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Biología Marina, Limnología
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/19192