Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/63564

TítuloDiet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses
Autor(es)Giménez, Joan
Marçalo, Ana
Ramírez, Francisco
Verborgh, Philippe
Gauffier, Pauline
Esteban, Ruth
Nicolau, Lídia
González-Ortegón, Enrique
Baldó, Francisco
Vilas, César
Vingada, José V.
G. Forero, Manuela
de Stephanis, Renaud
Data2017
EditoraPublic Library of Science (PLOS)
RevistaPLoS ONE
CitaçãoGiménez J, Marçalo A, Ramírez F, Verborgh P, Gauffier P, Esteban R, et al. (2017) Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses. PLoS ONE 12(9): e0184673. https://doi.org/10.1371/journal.pone.0184673
Resumo(s)The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its interaction with important ecosystem services such as fisheries. Here, we combined stomach content analyses (SCA) and stable isotope analyses (SIA) to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean). Prey items identified using SCA included European conger (Conger conger) and European hake (Merluccius merluccius) as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR), using δ13C and δ15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream, Diplodus annularis and D. bellottii, rubberlip grunt, Plectorhinchus mediterraneus, and common pandora, Pagellus erythrinus) and a mixture of other species including European hake, mackerels (Scomber colias, S. japonicus and S. scombrus), European conger, red bandfish (Cepola macrophthalma) and European pilchard (Sardina pilchardus). These contrasting results highlight differences in the temporal and taxonomic resolution of each approach, but also point to potential differences between ingested (SCA) and assimilated (SIA) diets. Both approaches provide different insights, e.g. determination of consumed fish biomass for the management of fish stocks (SCA) or identification of important assimilated prey species to the consumer (SIA).
TipoArtigo
URIhttps://hdl.handle.net/1822/63564
DOI10.1371/journal.pone.0184673
ISSN1932-6203
Versão da editorahttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0184673
Arbitragem científicayes
AcessoAcesso aberto
Aparece nas coleções:DBio - Artigos/Papers

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