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8 results on '"Sahar, Karray"'

1. New Socio-Spatial Reading of a Remarkable Landscape Located in Testour, toward a Heritage Setting of a Moorish Site

Author

Sahar Karray, Ángel Raúl Ruiz Pulpón, and Hichem Rejeb

Subjects
historical landscape, Morisco city, management, new reading, spatial-temporality, Testour, Archaeology, CC1-960
Abstract

Traditional conservation efforts have not improved conditions in most historic Tunisian cities. However, the changes adopted at the international level in historical urban conservation, based on urban vitality and regions’ sustainability, open horizons to new approaches of reading. Testour, a Moorish city of northern Tunisia, presents one of the historical centers most anchored in identity and the least studied. Our study aims at initiating a new transdisciplinary reading approach that provides a link between time, spaces, actors, culture and sustainability. To do so, we followed a methodological process with a gradual logic that led to a comprehensive management project. This approach presents a set of analytical methodological procedures, which consider historicity in conjunction with a global diagnostic of the landscape in favor of the evaluation of historic centers. This method enabled us to establish a new map showing the structural and functional evolution of Testour throughout history, identifying the valuation indicators and the attributes of global management. This work presents a new reading grid of Testour, including the structural, functional, values and heritage attributes.

Published
2023
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2. First Record of the Silverspot Squirrelfish Sargocentron caudimaculatum (Rüppell, 1838) in Mediterranean Waters

Author

Raouia Ghanem, Wafa Rjiba Bahri, Amani Chaffai, Jeanne Zaouali, Bilel Hassen, Sahar Karray, Monia El Bour, Jamila Ben Souissi, and Ernesto Azzurro

Subjects
Sargocentron caudimaculatum, Tunisian coasts, climate change, non-indigenous species, citizen, DNA barcoding, Science, General. Including nature conservation, geographical distribution, QH1-199.5
Abstract

On 14th October 2021, a single specimen of Sargocentron caudimaculatum was captured in the locality of Cape Bon, Eastern Tunisia, by a local fisher using gillnets at 60 m depth, on rocky bottom. This observation represents the first record of this species in the Mediterranean Sea. General information on the squirrelfishes and the importance of molecular tools for the proper identification of morphologically challenging non-indigenous organisms were raised and discussed.

Published
2022
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3. Unpublished Mediterranean and Black Sea records of marine alien, cryptogenic, and neonative species

Author

Michail, Ragkousis, Argyro, Zenetos, Jamila Ben Souissi, Razy, Hoffman, Raouia, Ghanem, Ergün, Taşkın, Mihaela, Muresan, Evgeniia, Karpova, Elena, Slynko, Ertan, Dağlı, Ana, Fortič, Victor, Surugiu, Vesna, Mačić, Domen, Trkov, Wafa Rjiba Bahri, Konstantinos, Tsiamis, Ramos-Espla, Alfonso A., Slavica, Petović, Jasmine, Ferrario, Agnese, Marchini, Renato, Sconfietti, Izdihar, Ammar, Alaa, Alo, Dori, Edelist, Tatiana, Begun, Adrian, Teaca, Gokhan, Tari, Mehmet Fatih Huseyinoglu, Karachle, Paraskevi K., Aikaterini, Dogrammatzi, Apostolopoulos, Giorgos A., Fabio, Crocetta, Eleni, Kytinou, Markos, Digenis, Grigorios, Skouradakis, Fiona, Tomas, Michel, Bariche, Alexandros, Kaminas, Kassiani, Konida, Alan, Deidun, Alessio, Marrone, Simonetta, Fraschetti, Vesselina, Mihneva, Carlo Nike Bianchi, Carla, Morri, Vasilis, Gerovasileiou, Lovrenc, Lipej, Maria, Sini, Luisa, Mangialajo, Maria, Zotou, Marius, Skolka, Ernesto, Azzurro, Adriana, Vella, Thanos, Dailianis, Panos, Grigoriou, Carlos, Jimenez, Konstantinos, Tsirintanis, Georgios, Oikonomidis, Emanuele, Mancini, Orestis, Papadakis, Vincenzo Di Martino, Giorgos, Chatzigeorgiou, Mohamed Mourad Ben Amor, Emmanouela, Vernadou, Yaprak, Arda, Vasileios, Minasidis, Annalisa, Azzola, Louis, Hadjioannou, Monica, Montefalcone, Yacopo, Baldacchino, Bessy, Stancanelli, Andrea, Bonifazi, Anna, Occhipinti-Ambrogi, Sonia, Smeraldo, Julian, Evans, Gerasimos, Kondylatos, Manuela, Falautano, Luca, Castriota, Aggelos, Lamprou, Jamila, Rizgalla, Borut, Mavrič, Evangelos, Papadimitriou, Kersting, Diego K., Schembri, Patrick J., Faten, Khamassi, Athanasios, Nikolaou, Enric, Ballesteros, Charalampos, Dimitriadis, María, García, Athanasios, Anastasiadis, Stefanos, Kalogirou, Melina, Nalmpanti, María, Altamirano, Daniele, Grech, Dimitrios, Mavrouleas, Noel, Vella, Sandra Agius Darmanin, Branko, Dragičević, Dimitris, Poursanidis, Alexandros, Tsatiris, Maria, Corsini-Foka, Martina, Orlando-Bonaca, Gianni, Insacco, Alexandros, Tsalapatis, Danilo, Scannella, Tiralongo, Francesco, Jana, Verdura, Sergio, Vitale, Michail-Aggelos, Valsamidis, Hocein, Bazairi, Anna Maria Mannino, Riccardo, Virgili, Fabio Collepardo Coccia, Radhouan El Zrelli, Savvas, Nikolidakis, Lotfi Jilani Rabaoui, Sercan, Yapıcı, Jeanne, Zaoual, Bruno, Zava, Neophytos, Agrotis, Murat, Bilecenoglu, Melih Ertan Çinar, Moraitis, Manos L., Albano, Paolo G., Nassir, Kaddouri, Ioanna, Kosma, Fabio, Falsone, Valentina, Fossati, Michele Luca Geraci, Leon Lojze Zamuda, Francesco Paolo Mancuso, Antonis, Petrou, Vasilis, Resaikos, İlker, Aydın, Batjakas, Ioannis E., Bos, Arthur R., Najib El Ouamari, Giovanni, Giallongo, Kampouris, Thodoros E., Khadija Ounifi-Ben Amor, Alper, Doğan, Jakov, Dulčić, Emine Şükran Okudan, Gil, Rilov, Rosso, Maria Antonietta, Laura, Royo, Mohamed, Selfati, Martina, Gaglioti, Sylvaine, Giakoumi, Vasiliki, Kousteni, Dragoș, Micu, Mircea, Nicoară, Sotiris, Orfanidis, Magdalene, Papatheodoulou, Jonathan, Tempesti, Maria, Triantaphyllou, Theodora, Tsourou, Ferhat, Yalgın, Emanuel, Baltag, Hasan, Cerim, Halit, Filiz, Georgiadis, Constantinos G., Paschalis, Papadamakis, Dimitra Lida Rammou, Manuela Diana Samargiu, Sciuto, Francesco, Mauro, Sinopoli, Ali, Türker, Antonia, Chiarore, Laura, Tamburello, Sahar, Karray, and Bilel Hassen and Stelios Katsanevakis

Subjects
invasive alien species, Ecology, geo-referenced records, Black Sea, distribution, Mediterranean Sea, non-indigenous, non-native species, non-indigenous, distribution, invasive alien species, geo-referenced records, Mediterranean Sea, Black Sea, non-native species, Ecology, Evolution, Behavior and Systematics
Abstract

To enrich spatio-temporal information on the distribution of alien, cryptogenic, and neonative species in the Mediterranean and the Black Sea, a collective effort by 173 marine scientists was made to provide unpublished records and make them open access to the scientific community. Through this effort, we collected and harmonized a dataset of 12, 649 records. It includes 247 taxa, of which 217 are Animalia, 25 Plantae and 5 Chromista, from 23 countries surrounding the Mediterranean and the Black Sea. Chordata was the most abundant taxonomic group, followed by Arthropoda, Mollusca, and Annelida. In terms of species records, Siganus luridus, Siganus rivulatus, Saurida lessepsianus, Pterois miles, Upeneus moluccensis, Charybdis (Archias) longicollis, and Caulerpa cylindracea were the most numerous. The temporal distribution of the records ranges from 1973 to 2022, with 44% of the records in 2020–2021. Lethrinus borbonicus is reported for the first time in the Mediterranean Sea, while Pomatoschistus quagga, Caulerpa cylindracea, Grateloupia turuturu, and Misophria pallida are first records for the Black Sea ; Kapraunia schneideri is recorded for the second time in the Mediterranean and for the first time in Israel ; Prionospio depauperata and Pseudonereis anomala are reported for the first time from the Sea of Marmara. Many first country records are also included, namely: Amathia verticillata (Montenegro), Ampithoe valida (Italy), Antithamnion amphigeneum (Greece), Clavelina oblonga (Tunisia and Slovenia), Dendostrea cf. folium (Syria), Epinephelus fasciatus (Tunisia), Ganonema farinosum (Montenegro), Macrorhynchia philippina (Tunisia), Marenzelleria neglecta (Romania), Paratapes textilis (Tunisia), and Botrylloides diegensis (Tunisia).

Published
2023

4. First record of the Gracile lizardfish Saurida gracilis (Quoy & Gaimard, 1824) in Mediterranean waters

Author

FATEN KHAMASSI, RAOUIA GHANEM, BILEL HASSAN, SAHAR KARRAY, MONIA EL BOUR, JAMILA BEN SOUISSI, and ERNESTO AZZURRO

Subjects
Saurida gracilis, Environmental Engineering, Tunisia, Lessepsian migration, Mediterranean Sea, Aquatic Science, Oceanography, Ecology, Evolution, Behavior and Systematics, non indigenous species
Abstract

In January 2021 during a scientific survey to assess the economic impacts of a Mass Mortality Event, a single individual of the Gracile lizardfish Saurida gracilis (Quoy & Gaimard, 1824) was caught out of Korbous (Northern Tunisia). This observation, confirmed by genetic analysis, provides evidence on the occurrence of a new non-indigenous species in Mediterranean waters. The relevance of this finding for the current monitoring strategies implemented at the regional level are briefly raised and discussed.

Published
2022

5. Responses of primary cultured haemocytes derived from the marine gastropod Haliotis tuberculata to an industrial effluent exposure

Author

Antoine Serpentini, Rim Ladhar-Chaabouni, Amel Hamza-Chaffai, Jean-Marc Lebel, Thomas Houel, Sahar Karray, Institut Préparatoire aux Etudes d'Ingénieur de Sfax (IPEIS), Université de Sfax - University of Sfax, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Mer, molécules et santé EA 2160 (MMS), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)

Subjects
0301 basic medicine, food.ingredient, Abalone, Clinical Biochemistry, Biomedical Engineering, chemistry.chemical_element, Bioengineering, Zinc, 010501 environmental sciences, Biology, 01 natural sciences, 03 medical and health sciences, food, Botany, 14. Life underwater, Haliotis, Effluent, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Pollutant, chemistry.chemical_classification, Cadmium, Reactive oxygen species, Aquatic ecosystem, Cell Biology, 6. Clean water, 030104 developmental biology, chemistry, 13. Climate action, Environmental chemistry, Original Article, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, Biotechnology
Abstract

This study assessed the responses of primary cultured haemocytes from the marine gastropod Haliotis tuberculata exposed to the increasing concentrations of industrial effluent (0, 0.5, 1, 10, 15 and 20%) discharged into the Tunisian coastal area. Analyses showed the presence of metals such as cadmium (Cd), chromium (Cr), copper (Cu), manganese (Mn), zinc (Zn), nickel (Ni) and lead (Pb) in the effluent. The effects of this mixture of pollutants on abalone haemocyte parameters were reflected by a significant decrease of cell viability, phagocytotic activity and reactive oxygen species (ROS) production as well as morphological and lysosomal membrane alterations. Thus, these results indicated that our primary culture system represents a suitable in vitro model for monitoring of anthropogenic contaminants in aquatic environments.

Published
2017
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6. Transcriptional response of stress-regulated genes to cadmium exposure in the cockle Cerastoderma glaucum from the gulf of Gabès area (Tunisia)

Author

Amel Hamza-Chaffai, Sahar Karray, Brigitte Moreau, Emmanuelle Tastard, Laurence Delahaut, Françoise Denis, Stanislas Thiriet-Rupert, Justine Marchand, Alain Geffard, Benoît Chénais, Mer, molécules et santé EA 2160 (MMS), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Université de Sfax - University of Sfax, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA)

Subjects
Cockle, Tunisia, Transcription, Genetic, Health, Toxicology and Mutagenesis, chemistry.chemical_element, sentinel species, Andrology, Superoxide dismutase, Stress, Physiological, Botany, Animals, Environmental Chemistry, Ecotoxicology, Metallothionein, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Cardiidae, HSP70, Detoxication, Cadmium, Dose-Response Relationship, Drug, biology, Stress response, catalase, q-RT-PCR, biomarkers, ABCB1, General Medicine, metallothionein, biology.organism_classification, superoxide dismutase, Pollution, Hsp70, Gene transcription, chemistry, Oxidative stress, Catalase, bioindicators, biology.protein, CO1, ABC transporter, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, Cerastoderma glaucum, Water Pollutants, Chemical
Abstract

International audience; This study investigates cadmium effects on key messenger RNA (mRNA) expression (MT, MnSOD, CuZnSOD, CAT, ABCB1, HSP70, and CO1) by qPCR in the cockle Cerastoderma glaucum after chronic exposure to two high but environmentally relevant concentrations of CdCl2 (50 μg/L and 5 mg/L) for 12 h to 18 days. Cd accumulation measured in cockles' tissues is significantly higher in both treatment conditions compared to controls and in a dose-dependent manner. Stress on stress tests performed at different times of the experiment clearly demonstrated that exposure to both concentrations of Cd significantly affects cockle survival time in air. Important changes in gene transcription were also highlighted. In particular, MT, HSP70, CAT, and CuZnSOD seem to be relevant biomarkers of Cd exposure because (1) their mRNA levels increase upon exposure and (2) they are highly correlated to Cd accumulation in tissues. Results may be useful for control strategies and for the use of cockles as sentinel organisms.

Published
2014
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7. Storage and reproductive strategy of the carpet-shell clam,Ruditapes decussatusin the Gulf of Gabès (Tunisia)

Author

Feten Guebsi, Tarak Rebai, Amel Hamza-Chaffai, Katherine Costil, W. Smaoui-Damak, Sahar Karray, Mer, molécules et santé EA 2160 (MMS), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), and Université de Sfax - University of Sfax

Subjects
0106 biological sciences, Gonad, urogenital system, Ecology, [SDV]Life Sciences [q-bio], [SDV.BA]Life Sciences [q-bio]/Animal biology, 010604 marine biology & hydrobiology, Reproductive strategy, Zoology, 04 agricultural and veterinary sciences, Biology, Reproductive cycle, 01 natural sciences, Spawn (biology), [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, Ruditapes decussatus, medicine.anatomical_structure, 040102 fisheries, medicine, 0401 agriculture, forestry, and fisheries, Animal Science and Zoology, 14. Life underwater, ComputingMilieux_MISCELLANEOUS, [SDV.BDD.GAM]Life Sciences [q-bio]/Development Biology/Gametogenesis, Developmental Biology
Abstract

In this study, the variations of glycogen concentrations in Ruditapes decussatus from Sfax coasts (Tunisia) were described in relation to the reproductive cycle. Separate analyses were made of gonad, adductor muscle and ‘remainder’. The timing of gametogenic development and spawning was evaluated using qualitative histology associated with image analysis including (1) the estimation of the gonadal occupation index (GOI), (2) surface area occupied by reserve tissues and (3) variation in oocyte diameter. The reproductive cycle of R. decussatus exhibited partial asynchronization between sexes, the major difference being observed in the duration of the spawning period. Contrary to previous studies, we observed continuous partial spawning (e.g. 50% of ripe oocytes still subsisted at the partial spawning stage). During the gametogenic cycle, GOI varied significantly in males and in females. Most oocytes were ripe and ready to spawn when their diameter reached or exceeded 45 µm. The expansion of gonad was invers...

Published
2012
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8. Transcriptional response of stress-regulated genes to industrial effluent exposure in the cockle Cerastoderma glaucum

Author

Benoît Chénais, Laurence Delahaut, Sahar Karray, Emmanuelle Tastard, Brigitte Moreau, Alain Geffard, Amel Hamza-Chaffai, Françoise Denis, Emmanuel Guillon, Justine Marchand, Mer, molécules et santé EA 2160 (MMS), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Université de Sfax - University of Sfax, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Normandie Université (NU)

Subjects
Cerastoderma glaucum, Health, Toxicology and Mutagenesis, Industrial Waste, Superoxide dismutase, sentinel species, chemistry.chemical_compound, Industrial effluent, Metals, Heavy, Gene expression, Botany, Animals, Environmental Chemistry, Metallothionein, Heavymetals, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, RNA, Messenger, Cockle, Cardiidae, HSP-70, Phosphate treatment, biology, q-RT-PCR, biomarkers, Biological Transport, ABCB1, General Medicine, biology.organism_classification, Catalase, metallothionein, Pollution, Hsp70, ATP, Biochemistry, chemistry, bioindicators, biology.protein, CO1, ABC transporter, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, Xenobiotic, Water Pollutants, Chemical, Cadmium
Abstract

International audience; This study assessed the responses of molecular biomarkers and heavy metal levels in Cerastoderma glaucum exposed for 1 week to two industrial effluents (1 %) discharged into the Tunisian coastal area, F1 and F2, produced by different units of production of a phosphate treatment plant. A significant uptake of metals (Cd, Cu, Zn, and Ni) was observed in exposed cockles compared to controls, with an uptake higher for F1 than for F2. A decrease in LT50 (stress on stress test) was also observed after an exposure to the effluent F1. Treatments resulted in different patterns of messenger RNA (mRNA) expression of the different genes tested in this report. Gene transcription monitoring performed on seven genes potentially involved in the tolerance to metal exposure showed that for both exposures, mechanisms are rapidly and synchronically settled down to prevent damage to cellular components, by (1) handling and exporting out metal ions through the up-regulation of ATP-binding cassette xenobiotic transporter (ABCB1) and metallothionein (MT), (2) increasing the mRNA expression of antioxidant enzymes (catalase (CAT), superoxide dismutases, CuZnSOD and MnSOD), (3) protecting and/or repairing proteins through the expression of heat shock protein 70 (HSP70) mRNAs, and (4) increasing ATP production (through the up-regulation of cytochrome c oxidase 1 (CO1)) to provide energy for cells to tolerate stress exposure. The tools developed may be useful both for future control strategies and for the use of the cockle C. glaucum as a sentinel species.

Published
2015
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