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Naziha Bourenane

  • Biodiversity Journal, 9 (3): 187-194

    Ouroud Fellah, Samir Hameurlaine, Naziha Bourenane, Noureddine Gherraf, Amar Zellagui, Abdenabi Abidi, Ali Tahar, Muhammed Altun, Ibrahim Demirtas & Ayse Sahin Yaglioglu
    Climatic factors as quality determinant of essential oils and phenolics in Rosmarinus officinalis L. (Lamiales Lamiaceae) collected from three geographic areas in Algeria
    https://doi.org/10.31396/Biodiv.Jour.2018.9.3.187.194

    ABSTRACT
    The present work was aimed to evaluate the effect of the climatic factors on quality and quantity of essential oils and phenolic compounds of the aerial parts of Rosmarinus officinalis L. (Lamiales Lamiaceae) collected from three different geographic origins in Algeria (humid, semi arid, and arid). Gas-Chromatography/Mass-Spectroscopy analysis of essential oils revealed important disparities, both quantitatively and qualitatively. α-pinene and camphor as major components were found to range from 16.78 to 40.95% and from 11.24 to 36.72%, respectively. The assessment of total phenolics in water and ethyl acetate extracts of the three samples displayed a content ranging from 58.26 to 114.10 mg GAE (gallic acid equivalent)/g of water extracts and from 73.75 to 167.91 mg GAE/g of ethyl acetate extracts. The flavonoids content was found to vary from 14.63 to 28.86 mg QE (quercetin equivalent)/g of water extracts and from 66.2 to 93.1 mg QE/g of ethyl acetate extracts. Moreover, the HPLC analysis of phenolics revealed the presence of many compounds amongst which Hesperidin and Rosmarinic acid have relatively high contents in both extracts and in the three sites.

  • 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.