Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/134709
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Feeding ecology of two demersal opportunistic predators coexisting in the northwestern Mediterranean Sea

AutorLópez, Nieves; Navarro, Joan CSIC ORCID ; Barría, Claudio CSIC ORCID; Albo Puigserver, Marta CSIC ORCID ; Coll, Marta CSIC ORCID ; Palomera, Isabel CSIC ORCID
Palabras claveBlack anglerfish
Lophius budegassa
Lophius piscatorius
Stomach contents
Stable isotopes
Spatial distributions
Trophic ecology
White anglerfish
Fecha de publicaciónjun-2016
EditorElsevier
CitaciónEstuarine, Coastal and Shelf Science 175: 15-23 (2016)
ResumenThe study of the feeding ecology of marine organisms is crucial to understanding their ecological roles and advancing our knowledge of marine ecosystem functioning. The aim of this study was to analyse the trophic ecology of two demersal predator species, black anglerfish (Lophius budegassa) and white anglerfish (L. piscatorius), in the northwestern Mediterranean Sea. Both species are important in the study area due to their high abundance and economic value, but information about their feeding behaviour is scarce. Here, we described the diet composition and ecological role of these two species, investigating whether trophic segregation exists between them and amongst fish of different sizes. In addition, by using experimental survey data we described the spatial distribution of both species to help us interpret trophic behaviour patterns. We gathered samples of two different sizes (small individuals of a total length <30 cm and large individuals ≥30 cm) of both species and combined stomach content analyses (SCA) and stable isotope analyses (SIA) of nitrogen and carbon with isotopic mixing models. Our results revealed that both anglerfish species are opportunistic predators, showing a diet composed mainly of fishes and, to a lesser extent, of crustaceans, with a small proportion of cephalopods, gastropods, bivalves and echinoderms. We found trophic segregation between the two species and the two sizes, indicating that they feed on different prey, in line with differences in their spatial distribution within the study area. This partial partition of food resources could also be explained by the differences in rhythms of activity that were reported in previous studies. In addition, although both species occupied a high position within the food web, our results showed that white anglerfish individuals and the large-sized fish of both species held higher trophic positions. This study demonstrates the usefulness of complementary approaches for trophic studies and confirms that both anglerfish species play an important role as predators in the northwestern Mediterranean Sea food web
Descripción9 pages, 4 figures, 4 tables, 1 appendix supplementary data https://dx.doi.org/10.1016/j.ecss.2016.03.007.-- This study is a contribution to the project ECOTRANS (CTM2011-26333, Spanish Ministry of Economy and Competiveness, Spain) and to the Master's thesis of NL
Versión del editorhttps://dx.doi.org/10.1016/j.ecss.2016.03.007
URIhttp://hdl.handle.net/10261/134709
DOI10.1016/j.ecss.2016.03.007
Identificadoresdoi: 10.1016/j.ecss.2016.03.007
issn: 0272-7714
e-issn: 1096-0015
Aparece en las colecciones: (EBD) Artículos
(ICM) Artículos

Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

22
checked on 17-mar-2024

WEB OF SCIENCETM
Citations

21
checked on 29-feb-2024

Page view(s)

269
checked on 18-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


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