Azzouna Atf

University of Tunis El Manar | FST · Department of Biology

Four species of the genus Lepidonotus (Annelida, Polynoidae) have been listed in the Mediterranean, including L. carinulatus (Grube, 1869), L. squamatus (Linnaeus, 1758), L. tenuisetosus (Gravier, 1902) and L. clava (Montagu, 1808), although recent studies confirmed only the presence of the two latter. Based on materials collected in the Radès Area...

Our study aimed to evaluate the effect of trace element pollution in the polychaete Perinereis cultrifera (Grube, 1840) from two Tunisian coasts (the port of Rades, S1; and the Punic port of Carthage, S2). To this end, we used an approach based on proximate composition, biomarker responses and trace element bioaccumulation. Our results showed a dec...

To date, the genus Marphysa is represented by only three species, Marphysa sanguinea, Marphysa aegypti and Marphysa birgeri in the Mediterranean Sea. Combining morphological, molecular data (16S rRNA and cytochrome c oxidase subunit I mitochondrial loci) and environmental information, we are here presenting the first Mediterranean report of Marphys...

The southward spread in Mediterranean Sea of the potentially invasive Polycera hedgpethi is documented by first reports from North African Mediterranean coasts. Overall, ten specimens were recorded, along 20 km of coastline in the Gulf of Tunis, from spring to autumn 2018, while no specimen was found in the following winter, according to the known...

Deglet Nour dates (Phoenix dactylifera L.) were sorted out according to the UNECE DDP-08 standard concerning the marketing and commercial quality control of dates. Desorption isotherms at 5, 30 and 40 °C and the Guggenheim–Anderson–deBoer (GAB) sorption model were used to estimate proper storage conditions and to predict shelf life. Physicochemical...

Dans un monde incertain et une réalité très complexe, les enseignants sont souvent démunis pour aborder des questions complexes porteuses d’incertitudes, alliant les questions, à la fois d’ordre scientifique, social, politique et notamment éthique (Simonneaux, 2017). Confronté à ce « réel », la pratique des enseignants en est certainement influencé...

The family Flabelligeridae was previously represented in Tunisia by four genera including four species: Bradabyssa villosa (Rathke, 1843), Therochaeta flabellata (M. Sars in G.O. Sars, 1872), Pherusa plumosa (Müller, 1776), and Piromis eruca (Claparède, 1869). In this paper we report a fifth genus, Trophoniella, for the first time in Tunisia. The s...

Background: The current knowledge of the diversity and distribution of tardigrade species in northern Africa is still scarce. In this study we provide an update for faunistic records of tardigrades from various regions of northern Tunisia. Results: In the present study, 232 specimens belonging to thirteen different species of tardigrades were isola...

The current knowledge of the diversity and distribution of tardigrade species in northern Africa is still scarce. In this study we provide an update for faunistic records of tardigrades from various regions of northern Tunisia.

perspective didactique et curriculaire sur le potentiel politique et les potentialités pour la socialisation dans les contenus éducatifs impliquant des questions environnementales et de developpement

Recent observations on molluscan assemblages associated with photophilous algae on rocky substrates located in the Radès Basin (Tunis Bay), have showed an established population of the nudibranch mollusc Doris verrucosa Linnaeus, 1758. This species inhabits shallow rocky environments of the western Mediterranean basin, and its presence in Tunisia w...

Knowledge about Echinoderms from Tunisia is still limited; only previous works were found without details. In order to contribute to the knowledge of their diversity in our coasts, Echinoderms were collected from twenty localities in different substrata and at different depths. Twenty six species were identified from four classes of Echinoderms: ei...

The Pharidae are Bivalve Molluscs, generally without any commercial interest. In the current work, two stations were chosen from the soft bottoms of the Bay of Tunis (La Goulette). The first one is located at 3-4 m depth and the second at 10-15 m. Among a total of 221 specimens, 2 species were identified as Pharus legumen (Linné, 1758) and Phaxas p...

The purpose of this research is to analyze the life and earth science curricula in Tunisia in order to determine its characteristics and to know if it really helps to develop critical thinking as it is claimed in curriculum documents. In this analysis, the authors applied the revised Bloom's taxonomy. The results show that curriculum authors ignore...

In a context marked by the rise of religious fundamentalism, treating a subject as biological evolution in a school setting or media becomes more and more difficult. This observation leads to no longer limit the didactic process (school and media) of the theory of evolution to its cognitive dimension, but to consider it as a matter subject to vario...

Treatment of the biological evolution subjections and informal problematization This paper reports the first stage of a research project focusing on the subjections to the didactic treatment of the Evolutionary Theory in order to provide a process/that would help to promote a possible “non-subjection”. The theoretical reference combines the “fundam...

Cet article developpe l’idee du traitement de l’evolution biologique assujetti aux representations religieuses sous-tendues par des visees politiques, et ce, des points de vue historique et litteraire. Il propose, par la suite, une reference theorique a l’approche foucaldienne sur les relations pouvoir-savoir. Cette reference est conjuguee a une de...

A study on the decapod assemblage inhabiting a shallow meadow of Cymodocea nodosa in the bay of La Goulette (Tunisia) was carried out from February 2009 to February 2010. Monthly samples (with replicates) were taken in the morning and at night, with a small Agassiz trawl. In total, 11699 specimens belonging to 41 species were caught. Significant da...

Immunocytochemical methods using an antibody raised against serotonin (5-HT) were used to identify presumptive serotonergic structures in the ventral nerve cord of Palaemonetes mesogenitor. Every segmental thoracic ganglion contains one pail of labelled neurons. Immunoreactive fibres are arranged in three pairs of rostro-caudal bundles: the medial...

The sinus gland, an elongated and a multilobed organ, is the major neurohemal center which stores nd releases the crustacean neurohormones synthetized mainly in the medulla terminalis X-organ. These hormones are varied and include the major neuropeptids known from crustaceans as MIH (molt inhibiting hormone), CHH (crustacean hyperglycemie hormone)...

The reports referred to 'Galite-1997' and 'Galite-1999' missions, in the LIFE project (TCY 97/TN/055): 'Conservation and Rehabilitation of Fragile Ecosystems in Mediterranean Islands', where observations were made on marine flora/fauna diversity, benthic habitats, and fishing in the Archipelago of Galite (Northern Tunisia), in order to create a mar...