Food web functioning of the benthopelagic community in a deep-sea seamount based on diet and stable isotope analyses
MetadataShow full item record
AuthorsPreciado, I. (Izaskun); Cartes, J.E.; Punzón, A. (Antonio); Frutos-Parralejo, M.I. (María Inmaculada); López-López, L. (Lucía); Serrano, A. (Alberto)
Trophic interactions in the deep-sea fish community of the Galicia Bank seamount (NE Atlantic) were inferred by using stomach contents analyses (SCA) and stable isotope analyses (SIA) of 27 fish species and their main prey items. Samples were collected during three surveys performed in 2009, 2010 and 2011 between 625 and 1800 m depth. Three main trophic guilds were determined using SCA data: pelagic, benthopelagic and benthic feeders, respectively. Vertically migrating macrozooplankton and meso-bathypelagic shrimps were identified to play a key role as pelagic prey for the deep sea fish community of the Galicia Bank. Habitat overlap was hardly detected; as a matter of fact, when species coexisted most of them evidenced a low dietary overlap, indicating a high degree of resource partitioning. A high potential competition, however, was observed among benthopelagic feeders, i.e.: Etmopterus spinax, Hoplostethus mediterraneus and Epigonus telescopus. A significant correlation was found between ...
The following license files are associated with this item: