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Impact of Pelagia noctiluca jellyfish on fish populations: predation and food competition in the NW Mediterranean

AutorTilves, Uxue ; Purcell, Jennifer E.; Fuentes, Veronica ; Gili, Josep Maria ; Raya, Vanesa ; Pascual, María ; Sabatés, Ana
Fecha de publicación17-sep-2014
EditorInternational Council for the Exploration of the Sea
CitaciónICES Annual Science Conference (2014)
ResumenThe scyphozoan Pelagia noctiluca is one of the most abundant species of jellyfish in the western Mediterranean Sea and its population seems to be increasing. It is a voracious predator, consuming fish larvae, fish eggs, and the foods of zooplanktivorous fish. The heavy dependence of the economies of many Mediterranean European countries on fisheries highlights the need to understand the potential impacts of this jellyfish on commercial fish populations. In the frame of the Spanish National Project FISHJELLY, we investigated the potential impacts of P. noctiluca on fish larva populations during two oceanographic cruises along the Catalan coast in the summers of 2011 and 2012. On each cruise, 81 stations were sampled to determine the distributions and abundances of gelatinous predators and their prey (zoo- and ichthyoplankton). Here we present the spatial overlaps of P. noctiluca, zooplankton, and ichthyoplankton, and the predation impacts, calculated from the numbers of prey eaten, the digestion times, and their abundances in situ
DescripciónInternational Council for the Exploration of the Sea Annual Science Conference (ICES ASC 2014), Sustainability in a changing ocean, 15-19 September 2014, La Coruña.-- 2 pages
Versión del editorhttp://www.ices.dk/news-and-events/asc/ASC-2014/Programme/Pages/default.aspx
URIhttp://hdl.handle.net/10261/127644
Aparece en las colecciones: (ICM) Comunicaciones congresos
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