Study of the ichthyofauna diet in the Ichkeul Lake (Tunisia)

WOS:000363709700003 International audience In order to define the structure of trophic network of Ichkeul Lake in Tunisia, diet of main teleost fish species was determined during two seasons, wet and dry. A total of 491 stomachs from 16 teleost species was analyzed. The analysis revealed spatial var...

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Bibliographic Details
Main Authors: Shaiek, Moez, Romdhane, Mohamed Salah, Le Loc’h, François
Other Authors: Ecosystèmes et Ressources Aquatiques (UR03AGRO1), Institut National Agronomique de Tunisie, Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2015
Subjects:
ACL
population-structure
coastal lagoon
Stomach contents
diversity
Tunisia
communities
france
Diet
portugal
Ichthyofauna
abundance
anguilla-anguilla
Ichkeul Lake
mediterranean brackish lagoon
organization
Prey
Trophic group
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Anguilla anguilla
Online Access:https://hal.science/hal-02560896
Description
Summary:WOS:000363709700003 International audience In order to define the structure of trophic network of Ichkeul Lake in Tunisia, diet of main teleost fish species was determined during two seasons, wet and dry. A total of 491 stomachs from 16 teleost species was analyzed. The analysis revealed spatial variability (East under marine influence and West with more continental effect) and temporal one (wet and dry seasons). Based on stomach contents, nine trophic groups were revealed, including eight monospecific groups. The main prey are mudflat snails (Hydrobia ventrosa, H. acuta), bivalves (Abra alba, Cerastoderma glaucum), amphipods and isopods, as well as seagrass (Potamogeton pectinatus, Ruppia cirrhosa) and water brackish algae (Ulva spp. and Chaetomorpha spp., Cladophora sp., Polysiphonia sp.).

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