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Faiza Oudjane

  • Biodiversity Journal, 8 (3): 777-782

    Faiza Oudjane, Naziha Bourenane & Tahar Wafa
    Feeding habits and condition of the seabream Sparus aurata Linnaeus, 1758 (Perciformes Sparidae) in the gulfs of Skikda and Annaba (Northeast of Algeria)

    ABSTRACT
    The Feeding habits of the royal seabream Sparus aurata Linnaeus, 1758 (Perciformes Sparidae) in the northeast of Algeria were continuously monitored from April 2013 to May 2014. A study was carried out on the digestive content of 380 specimens, with a total length ranging between 18.1 cm and 48 cm. Overall, 1615 preys belonging to ten different phyla (Chordata, Echinodermata, Crustacea, Chlorophyta, Mollusca, Annelida, Bryozoa, Platyhelmintha, Nemathelmintha, Tallophyta), were computed. The reoyal seabream S. aurata has a widely varied diet. At a juvenile stage it is omnivorous, feeding on different benthic preys (i.e. shellfishes, molluscs, annelids, plants), on pelagic ones (fishes, eggs and Copepods), and Chlorophycea algae, as well. On a further stage, it shows a predatory feeding behavior, with molluscs constituting its preferential food as shown by the Main food index (MFI) values.

  • Biodiversity Journal, 12 (1): 0255-0260

    Faiza Oudjane
    Parasitic infection by the nematode Anguillicola crassus (Kuwahara, Niimi et Itagaki, 1974) in the European eel Anguilla anguilla (Linnaeus, 1758) (Pisces Anguilliidae) of Lake Oubeïra (eastern Algeria)
    https://doi.org/10.31396/Biodiv.Jour.2021.12.1.255.260

    ABSTRACT
    In the course of our work on the European Eel Anguilla anguilla (Linnaeus, 1758) from the El Kala wetland (RAMSAR, 2000), we found that this species is of great biological and socio-economic importance. Unfortunately, this extraordinary global genetic heritage, long considered as a robust species with low vulnerability, is in constant decline throughout its range and made us aware of the fragility of the species. Therefore, we were interested in the impact of parasitism caused by the nematode ectoparasite Anguillicola crassus on the overweight of this species populating Lake Oubeïra (eastern Algeria), and those on a total of 724 eels sampled, with a total length between 10.5 and 89.9 cm, and a total weight between 17 and 1470 g. The epidemiological study reveals that eels suffer from several parasitic attacks including infection of the swim bladder by the nematode Anguillicola crassus. The presence of the eel in Lake Oubeïra throughout the year increases the rate of infection. Anguillicolosis is important in large individuals and in different sexes and stages of silvering.