Jellyfish as an alternative source of food for opportunistic fishes

Autor: Solenn Soriano, Jean-Antoine Tomasini, Cyrille Przybyla, Audrey M. Darnaude, Juan Carlos Molinero, Raquel Marques, Delphine Bonnet, Corinne Bouvier
Přispěvatelé: MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Universidade do Algarve (UAlg), Helmholtz Centre for Ocean Research [Kiel] (GEOMAR), Observatoire de REcherche Méditerranéen de l'Environnement (OSU OREME), Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), GEOMAR - Helmholtz Centre for Ocean Research [Kiel] (GEOMAR), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Montpellier 2 - Sciences et Techniques (UM2)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Journal of Experimental Marine Biology and Ecology
Journal of Experimental Marine Biology and Ecology, Elsevier, 2016, 485, pp.1-7. ⟨10.1016/j.jembe.2016.08.008⟩
Journal Of Experimental Marine Biology And Ecology (0022-0981) (Elsevier Science Bv), 2016-12, Vol. 485, P. 1-7
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
ISSN: 0022-0981
DOI: 10.1016/j.jembe.2016.08.008⟩
Popis: Although scientific interest on jellyfish ecology has substantially increased in the last decades, little is known on the role of potential predators shaping their population dynamics. Jellyfish were long considered as 'dead ends' within food webs, and therefore overlooked as potential food source for higher trophic levels, e.g. fishes. Here this question is tackled by using comprehensive laboratory experiments assessing fish predation on jellyfish. The approach included all the life stages (polyps, ephyrae and medusa) of Aurelia sp. versus more traditional aquaculture feeds in an easily farmed opportunistic fish, the gilthead seabream Sparus aurata (L.). Results revealed that all life stages of Aurelia sp. were accepted as a source of food by S. aurata, whose grazing pressure varies depending on the jellyfish life stage. Higher ingestion rates were observed on young stages (i.e. small medusa) indicating their higher vulnerability to fish predation and the potential negative impact this may have on Aurelia sp. population dynamics. These results provide new insights on the so far underestimated role fish predation can have on jellyfish population dynamics. In particular, opportunistic fish species, such as S. aurata may contribute to control jellyfish blooms, through top-down regulations of jellyfish biomass. (C) 2016 Elsevier B.V. All rights reserved. Funded by EC2CO through the DYNAMO program
Databáze: OpenAIRE
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