English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/115708
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 2 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Evaluating potential artifacts of tethering techniques to estimate predation on sea urchins

Autor Boada, Jordi ; Sanmartí, Neus; Selden, Rebecca L.; Lucas, Arturo; Pérez, Marta M.; Alcoverro, Teresa ; Romero, Javier
Palabras clave Experimental ecology
Tagging
Paracentrotus lividus
Predation
Prey detection
Prey mortality
Fecha de publicación 2015
EditorElsevier
Citación Journal of Experiemntal Marine Biology and Ecology 471 : 17-22 (2015)
ResumenMeasuring the strength of trophic interactions in marine systems has been central to our understanding of community structuring. Sea urchin tethering has been the method of choice to evaluate rates of predation in marine benthic ecosystems. As standardly practiced, this method involves piercing the urchin test, potentially introducing significantmethodological artifacts thatmay influence survival or detection by predators.Herewe assess possible artifacts of tethering comparing invasive (pierced) and non-invasive tethering techniques using the sea urchin Paracentrotus lividus. Specifically, we looked at how degree of confinement and high water temperature (first order artifacts) and predator guild and size of the prey (second order artifacts) affect the survival and/or detectability of pierced urchins. Our results show that first order artifacts only arise when pierced sea urchins are placed in sheltered bayswith confined waters, especiallywhenwater temperature reaches extremely high levels. Prey detectability did not increase in pierced sea urchins for the most common predators. Also, test piercing did not alter the preferences of predators for given prey sizes. Weconclude that the standard tethering technique is a robust method to test relative rates of sea urchin predation. However, local conditions could increasemortality of the tethered urchin in sheltered bays or in very high temperature regimes. Under these conditions, adequate pierced controls (within predator exclusions) need to be included in assays to evaluate artifactual sources of mortality.
Descripción 6 páginas, 3 figuras,3 tablas.
Versión del editorhttp://dx.doi.org/10.1016/j.jembe.2015.05.011
URI http://hdl.handle.net/10261/115708
DOI10.1016/j.jembe.2015.05.011
ISSN0022-0981
Aparece en las colecciones: (CEAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Evaluating potential artifacts of tethering JEMBE.pdf364,14 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.