Publications des scientifiques de l'IRD

Navarro J., Lopez L., Coll Marta, Barria C., Saez-Liante R. (2014). Short- and long-term importance of small sharks in the diet of the rare deep-sea shark Dalatias licha. Marine Biology, 161 (7), p. 1697-1707. ISSN 0025-3162.

Titre du document
Short- and long-term importance of small sharks in the diet of the rare deep-sea shark Dalatias licha
Année de publication
2014
Type de document
Article
Auteurs
Navarro J., Lopez L., Coll Marta, Barria C., Saez-Liante R.
Source
Marine Biology, 2014, 161 (7), p. 1697-1707 ISSN 0025-3162
Knowing the trophic ecology of marine predators is essential to develop an understanding of their ecological role in ecosystems. Research conducted on deep-sea and threatened shark species is limited. Here, by combining analyses of individual stomach contents and stable isotope values, we examined the trophic ecology (dietary composition and trophic position) of the kitefin shark Dalatias licha, a deep-sea shark considered as near threatened globally and as data deficient in the Mediterranean Sea. Results revealed the importance of small sharks in the diet of the kitefin shark at short- and long-term scales, although fin-fish, crustaceans and cephalopods were also found. Predation on sharks reveals the high trophic position of the kitefin shark within the food web of the western Mediterranean Sea. Stable isotope values from liver and muscle tissues confirmed our results from stomach content analysis and the high trophic position.
Plan de classement
Synécologie [036MILMAR02]
Descripteurs
POISSON MARIN ; ESPECE DEMERSALE ; ESPECE MENACEE ; RELATION TROPHIQUE ; COMPORTEMENT ALIMENTAIRE ; CONTENU STOMACAL ; ANALYSE ISOTOPIQUE ; REQUIN
Description Géographique
MEDITERRANEE
Localisation
Fonds IRD [F B010062944]
Identifiant IRD
fdi:010062944
Contact