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Artículo

Muricid drilling predation at high latitudes: insights from the Southernmost Atlantic

Martinelli, Julieta C.; Gordillo, SandraIcon ; Archuby, FernandoIcon
Fecha de publicación: 01/2013
Editorial: Society For Sedimentary Geology
Revista: Palaios
ISSN: 0883-1351
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Paleontología

Resumen

Drilling predation is frequently studied in the fossil record. Less information is available from recent environments, however. Previous studies have indicated that drilling predation is usually higher in the tropics but little research has been undertaken in high latitudes. To address this hypothesis, we examine muricid-drilling predation along a 1,000 km transect in southern South America. Drilling frequencies ranged between 3% and 36%, and they were not correlated with the abundance of the predator (Trophon geversianus) or the abundance of its preferred prey. The only locality with exceptionally high predation (36%) was a heavily anthropogenically impacted site. Trophon exhibited different drilling strategies on different prey, and edge drilling represented 27%–56% of the drill holes in mytilids. Drilling frequencies were not correlated with latitude or water temperature. Our results, however, show that drilling frequencies are indeed lower at high latitudes compared to the tropics, and these data provide a recent baseline to compare and interpret spatial variability in muricid drilling predation from past environments. The fact that dead-shell assemblages seem to be recording human-related impacts in this system strengthens their relevance as potentially valuable conservation tools.
Palabras clave: Bivalvia , Drilling Predation , Latitudinal Gradient , Patagonia Argentina
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/11075
URL: http://dx.doi.org/10.2110/palo.2012.p12-087r
URL: http://palaios.geoscienceworld.org/content/28/1/33
URL: http://palaios.sepmonline.org/content/28/1/33
Colecciones
Articulos(CICTERRA)
Articulos de CENTRO DE INVEST.EN CS.DE LA TIERRA
Citación
Martinelli, Julieta C.; Gordillo, Sandra; Archuby, Fernando; Muricid drilling predation at high latitudes: insights from the Southernmost Atlantic; Society For Sedimentary Geology; Palaios; 28; 1-2013; 33-41
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