Destacados
- La Fundación Jaime González-Gordon ofrece cuatro becas para el desarrollo de Trabajos de Fin de Máster sobre Doñana
- Cinco contratos para desarrollar la tesis doctoral en la Estación Biológica de Doñana - CSIC
- Actividades de la Estación Biológica de Doñana en la Noche Europea de los Investigadores
- La ICTS-RBD se prepara para la 30ª Campaña de Anillamiento de Paseriformes Migratorios en Doñana
- Inicio procedimiento nueva dirección EBD-CSIC
Noticias
The diet of the bottlenose dolphin described by stomach content and stable isotope analyses
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, 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, stomach content analyses (SCA) and stable isotope analyses (SIA) were combined to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean). Prey items identified using SCA included European conger and European hake as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR), using ?13C and ?15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream) and a mixture of other species including European hake, mackerels, European conger, red bandfish and European pilchard. 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). informacion[at]ebd.csic.es: Giménez et al (2017) Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses PLoS ONE https://doi.org/10.1371/journal.pone.0184673
- Laboratorio de Ecología Molecular
- Laboratorio SIG y Teledetección (LAST)
- Laboratorio de Ecología Química
- Laboratorio de Ecología Acuática
- Laboratorio de Ecofisiología
- Laboratorio de Isótopos Estables
- Unidad de Experimentación Animal
- Visita virtual
- Unidad de Seguimiento
- Laboratorio de Camaras climaticas