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Chaira K, Rhinane H, Ennaffah B, Dellal M, Abouabdellah R, Ammari S, Bouthir FZ, Sagou R, Benbrahim S, Yassir A, Abdelouahab H, Masseret E, Laabir M. First insights into the distribution and diversity of toxic dinoflagellate cysts in the surface sediments of Dakhla Bay (African Atlantic coast): relationships with environmental factors and mollusk intoxication events. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:50746-50766. [PMID: 39103579 DOI: 10.1007/s11356-024-34451-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 07/18/2024] [Indexed: 08/07/2024]
Abstract
Dakhla Bay, situated on the African Atlantic coast, has witnessed sporadic harmful algal blooms (HABs) caused by toxic dinoflagellate species over the past two decades. In this study, we investigated the distribution, abundance, and diversity of dinoflagellate cysts, with a focus on potentially toxic species that develop in this ecosystem where such data are lacking. Sediment samples were collected in April 2018 through coring at 49 stations distributed across the bay. The highest abundance of dinoflagellate cysts was recorded at 304 cysts/g dry sediment, observed at the inner part of the bay, indicating that this area is the preferential zone for cyst accumulation. Pearson's tests revealed significant positive correlations (P < 0.05) between cyst abundance and the water content, organic matter, and fine fraction (< 63 μm) of the sediment. Cyst morphotypes of potentially toxic dinoflagellate species known to produce saxitoxins, such as Alexandrium minutum, Alexandrium tamarense species complex, Gymnodinium catenatum, and yessotoxins, such as Lingulodinium polyedrum and Gonyaulax cf. spinifera, were identified in the sediment of Dakhla Bay. These findings were further supported by our long-term monitoring period (2005-2018), underscoring the presence of these HAB species in Dakhla Bay. During our survey, sporadic mollusk intoxication events were recorded at station PK25 for the grooved razor shell Solen marginatus and at station Boutelha for the oyster Crassostrea gigas. Paralytic shellfish toxin concentrations exceeded the sanitary threshold (80 μg STX di-HCl eq/100 g of shellfish meat) only twice, in December 2006 and January 2007 at station PK25. Contamination by amnesic shellfish toxins occurred sporadically but never reached the sanitary threshold of 20 µg/g of shellfish meat. Lipophilic shellfish intoxication occurred multiple times in the two investigated areas. These observations suggest that the cysts of the identified HAB species germinated and inoculated the water column, resulting in the observed intoxication events. Relatively low levels of intoxication could be attributed to the moderate abundances of cysts, which may reduce the seeding capacity. This could be explained by the significant interaction of Dakhla Bay with the Atlantic Ocean, characterized by hydrological dynamics that impede the deposition and accumulation of cysts in the bay's sediments. This study reaffirms the importance of investigating dinoflagellate cysts in assessing the diversity of HAB species and evaluating associated sanitary risks.
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Affiliation(s)
- Karima Chaira
- National Institute of Fisheries Research, Casablanca, Morocco
- Geosciences Laboratory, Department of Geology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
- Univ Montpellier, MARBEC, CNRS, IRD, Ifremer, Place E. Bataillon, CC93, 34095, Montpellier cedex 5, France
| | - Hassan Rhinane
- Geosciences Laboratory, Department of Geology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | | | - Mina Dellal
- National Institute of Fisheries Research, Casablanca, Morocco
| | - Rachid Abouabdellah
- Agadir LSSMM Reg Ctr, National Institute of Fisheries Research, Agadir, Morocco
| | - Sanae Ammari
- National Institute of Fisheries Research, Casablanca, Morocco
| | | | - Reqia Sagou
- National Institute of Fisheries Research, Casablanca, Morocco
| | - Samir Benbrahim
- National Institute of Fisheries Research, Casablanca, Morocco
| | - Anas Yassir
- National Institute of Fisheries Research, Casablanca, Morocco
| | | | - Estelle Masseret
- Univ Montpellier, MARBEC, CNRS, IRD, Ifremer, Place E. Bataillon, CC93, 34095, Montpellier cedex 5, France
| | - Mohamed Laabir
- Univ Montpellier, MARBEC, CNRS, IRD, Ifremer, Place E. Bataillon, CC93, 34095, Montpellier cedex 5, France.
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Barrenechea Angeles I, Romero-Martínez ML, Cavaliere M, Varrella S, Francescangeli F, Piredda R, Mazzocchi MG, Montresor M, Schirone A, Delbono I, Margiotta F, Corinaldesi C, Chiavarini S, Montereali MR, Rimauro J, Parrella L, Musco L, Dell'Anno A, Tangherlini M, Pawlowski J, Frontalini F. Encapsulated in sediments: eDNA deciphers the ecosystem history of one of the most polluted European marine sites. ENVIRONMENT INTERNATIONAL 2023; 172:107738. [PMID: 36641836 DOI: 10.1016/j.envint.2023.107738] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 12/05/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
The Anthropocene is characterized by dramatic ecosystem changes driven by human activities. The impact of these activities can be assessed by different geochemical and paleontological proxies. However, each of these proxies provides only a fragmentary insight into the effects of anthropogenic impacts. It is highly challenging to reconstruct, with a holistic view, the state of the ecosystems from the preindustrial period to the present day, covering all biological components, from prokaryotes to multicellular eukaryotes. Here, we used sedimentary ancient DNA (sedaDNA) archives encompassing all trophic levels of biodiversity to reconstruct the two century-natural history in Bagnoli-Coroglio (Gulf of Pozzuoli, Tyrrhenian Sea), one of the most polluted marine-coastal sites in Europe. The site was characterized by seagrass meadows and high eukaryotic diversity until the beginning of the 20th century. Then, the ecosystem completely changed, with seagrasses and associated fauna as well as diverse groups of planktonic and benthic protists being replaced by low diversity biota dominated by dinophyceans and infaunal metazoan species. The sedaDNA analysis revealed a five-phase evolution of the area, where changes appear as the result of a multi-level cascade effect of impacts associated with industrial activities, urbanization, water circulation and land-use changes. The sedaDNA allowed to infer reference conditions that must be considered when restoration actions are to be implemented.
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Affiliation(s)
- Ines Barrenechea Angeles
- Department of Earth Sciences, University of Geneva, 13, rue des Maraîchers, 1205 Geneva, Switzerland; Department of Genetics and Evolution, University of Geneva, 1205 Geneva, Switzerland.
| | | | - Marco Cavaliere
- Department of Pure and Applied Sciences, Università of Urbino "Carlo Bo", 61029 Urbino, Italy.
| | - Stefano Varrella
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, 60131 Ancona, Italy.
| | | | - Roberta Piredda
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Bari, Italy.
| | | | | | - Antonio Schirone
- ENEA, Department of Sustainability, Marine Environment Research Centre S. Teresa, 19032 Pozzuolo di Lerici, Italy.
| | - Ivana Delbono
- ENEA, Department of Sustainability, Marine Environment Research Centre S. Teresa, 19032 Pozzuolo di Lerici, Italy.
| | | | - Cinzia Corinaldesi
- Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, 60131 Ancona, Italy.
| | | | | | - Juri Rimauro
- ENEA, Department of Sustainability, CR Portici, 80055, Portici, Naples, Italy.
| | - Luisa Parrella
- ENEA, Department of Sustainability, CR Portici, 80055, Portici, Naples, Italy.
| | - Luigi Musco
- Stazione Zoologica Anton Dohrn, 80121 Naples, Italy; Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, University of Salento, 73100 Lecce, Italy.
| | - Antonio Dell'Anno
- Department of Life and Environmental Sciences, Polytechnic University of Marche, 60131 Ancona, Italy.
| | | | - Jan Pawlowski
- Department of Genetics and Evolution, University of Geneva, 1205 Geneva, Switzerland; ID-Gene ecodiagnostics Ltd, 1228 Plan-les-Ouates, Switzerland; Institute of Oceanology, Polish Academy of Sciences, 81-712 Sopot, Poland.
| | - Fabrizio Frontalini
- Department of Pure and Applied Sciences, Università of Urbino "Carlo Bo", 61029 Urbino, Italy.
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3
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Rodríguez-Villegas C, Díaz PA, Salgado P, Tomasetti SJ, Díaz M, Marín SL, Baldrich ÁM, Niklitschek E, Pino L, Matamala T, Espinoza K, Figueroa RI. The role of physico-chemical interactions in the seasonality of toxic dinoflagellate cyst assemblages: The case of the NW Patagonian fjords system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 311:119901. [PMID: 35963388 DOI: 10.1016/j.envpol.2022.119901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Harmful algal blooms (HABs) are recurrent in the NW Patagonia fjords system and their frequency has increased over the last few decades. Outbreaks of HAB species such as Alexandrium catenella, a causal agent of paralytic shellfish poisoning, and Protoceratium reticulatum, a yessotoxins producer, have raised considerable concern due to their adverse socioeconomic consequences. Monitoring programs have mainly focused on their planktonic stages, but since these species produce benthic resting cysts, the factors influencing cyst distributions are increasingly gaining recognition as potentially important to HAB recurrence in some regions. Still, a holistic understanding of the physico-chemical conditions influencing cyst distribution in this region is lacking, especially as it relates to seasonal changes in drivers of cyst distributions, as the characteristics that favor cyst preservation in the sediment may change through the seasons. In this study, we analyzed the physico-chemical properties of the sediment (temperature, pH, redox potential) and measured the bottom dissolved oxygen levels in a "hotspot" area of southern Chile, sampling during the spring and summer as well as the fall and winter, to determine the role these factors may play as modulators of dinoflagellate cyst distribution, and specifically for the cysts of A. catenella and P. reticulatum. A permutational analysis of variance (PERMANOVA) showed the significant effect of sediment redox conditions in explaining the differences in the cyst assemblages between spring-summer and fall-winter periods (seasonality). In a generalized linear model (GLM), sediment redox potential and pH were associated with the highest abundances of A. catenella resting cysts in the spring-summer, however it was sediment temperature that most explained the distribution of A. catenella in the fall-winter. For P. reticulatum, only spring-summer sediment redox potential and temperature explained the variation in cyst abundances. The implications of environmental (physico-chemical) seasonality for the resting cysts dynamics of both species are discussed.
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Affiliation(s)
- Camilo Rodríguez-Villegas
- Programa de Doctorado en Ciencias, Mención Conservación y Manejo de Recursos Naturales, Universidad de Los Lagos, Camino Chinquihue Km 6, Puerto Montt, Chile; Centro i∼mar, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile; CeBiB, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile.
| | - Patricio A Díaz
- Centro i∼mar, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile; CeBiB, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile
| | - Pablo Salgado
- Centro de Estudios de Algas Nocivas (CREAN), Instituto de Fomento Pesquero (IFOP), Enrique Abello 0552, Punta Arenas, Chile
| | | | - Manuel Díaz
- Programa de Investigación Pesquera, Universidad Austral de Chile, Puerto Montt, Chile; Instituto de Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile
| | - Sandra L Marín
- Instituto de Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile
| | - Ángela M Baldrich
- Programa de Doctorado en Ciencias, Mención Conservación y Manejo de Recursos Naturales, Universidad de Los Lagos, Camino Chinquihue Km 6, Puerto Montt, Chile; Centro i∼mar, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile; CeBiB, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile
| | - Edwin Niklitschek
- Centro i∼mar, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile
| | - Loreto Pino
- Programa de Investigación Pesquera, Instituto de Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile
| | - Thamara Matamala
- Programa de Investigación Pesquera, Instituto de Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile
| | - Katherine Espinoza
- Programa de Investigación Pesquera, Instituto de Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile
| | - Rosa I Figueroa
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía (IEO-CSIC), Subida a Radio Faro 50, 36390, Vigo, Spain
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Yakimov AS, Denisov IA, Bukatin AS, Lukyanenko KA, Belousov KI, Kukhtevich IV, Esimbekova EN, Evstrapov AA, Belobrov PI. Droplet Microfluidic Device for Chemoenzymatic Sensing. MICROMACHINES 2022; 13:1146. [PMID: 35888963 PMCID: PMC9325247 DOI: 10.3390/mi13071146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 12/14/2022]
Abstract
The rapid detection of pollutants in water can be performed with enzymatic probes, the catalytic light-emitting activity of which decreases in the presence of many types of pollutants. Herein, we present a microfluidic system for continuous chemoenzymatic biosensing that generates emulsion droplets containing two enzymes of the bacterial bioluminescent system (luciferase and NAD(P)H:FMN-oxidoreductase) with substrates required for the reaction. The developed chip generates "water-in-oil" emulsion droplets with a volume of 0.1 μL and a frequency of up to 12 drops per minute as well as provides the efficient mixing of reagents in droplets and their distancing. The bioluminescent signal from each individual droplet was measured by a photomultiplier tube with a signal-to-noise ratio of up to 3000/1. The intensity of the luminescence depended on the concentration of the copper sulfate with the limit of its detection of 5 μM. It was shown that bioluminescent enzymatic reactions could be carried out in droplet reactors in dispersed streams. The parameters and limitations required for the bioluminescent reaction to proceed were also studied. Hereby, chemoenzymatic sensing capabilities powered by a droplet microfluidics manipulation technique may serve as the basis for early-warning online water pollution systems.
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Affiliation(s)
- Anton S. Yakimov
- Laboratory of Physical and Chemical Technologies for the Development of Hard-to-Recover Hydrocarbon Reserves, Siberian Federal University, 660041 Krasnoyarsk, Russia;
| | - Ivan A. Denisov
- Laboratory of Physical and Chemical Technologies for the Development of Hard-to-Recover Hydrocarbon Reserves, Siberian Federal University, 660041 Krasnoyarsk, Russia;
- Laboratory of Bioluminescent Biotechnologies, Siberian Federal University, 660041 Krasnoyarsk, Russia;
| | - Anton S. Bukatin
- Laboratory of Renewable Energy Sources, Alferov University, 194021 Saint Petersburg, Russia; (A.S.B.); (K.I.B.)
- Institute for Analytical Instrumentation RAS, 194021 Saint Petersburg, Russia;
| | - Kirill A. Lukyanenko
- Laboratory of Bioluminescent Biotechnologies, Siberian Federal University, 660041 Krasnoyarsk, Russia;
- Laboratory for Biomolecular and Medical Technologies, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, 660022 Krasnoyarsk, Russia
- Laboratory for Digital Controlled Drugs and Theranostics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
| | - Kirill I. Belousov
- Laboratory of Renewable Energy Sources, Alferov University, 194021 Saint Petersburg, Russia; (A.S.B.); (K.I.B.)
| | - Igor V. Kukhtevich
- Institute of Silicate Chemistry of RAS, 199034 Saint Petersburg, Russia;
- Institute of Functional Epigenetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Elena N. Esimbekova
- Institute of Biophysics SB RAS, 660036 Krasnoyarsk, Russia;
- Department of Biophysics, Siberian Federal University, 660041 Krasnoyarsk, Russia;
| | | | - Peter I. Belobrov
- Department of Biophysics, Siberian Federal University, 660041 Krasnoyarsk, Russia;
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Pringault O, Bouvy M, Carre C, Mejri K, Bancon-Montigny C, Gonzalez C, Leboulanger C, Hlaili AS, Goni-Urriza M. Chemical contamination alters the interactions between bacteria and phytoplankton. CHEMOSPHERE 2021; 278:130457. [PMID: 34126687 DOI: 10.1016/j.chemosphere.2021.130457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 03/24/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
Bacteria and phytoplankton are key players in aquatic ecosystem functioning. Their interactions mediate carbon transfer through the trophic web. Chemical contamination can alter the function and diversity of phytoplankton and bacterioplankton, with important consequences for ecosystem functioning. The aim of the present study was to assess the impact of chemical contamination on the interactions between both biological compartments. Two contrasting marine coastal ecosystems, offshore waters and lagoon waters, were exposed to chemical contamination (artificial or produced from resuspension of contaminated sediment) in microcosms in four seasons characterized by distinct phytoplankton communities. Offshore waters were characterized by a complex phytoplankton-bacterioplankton network with a predominance of positive interactions between both compartments, especially with Haptophyta, Cryptophyta, and dinoflagellates. In contrast, for lagoon waters, the phytoplankton-bacterioplankton network was simpler with a prevalence of negative interactions with Ochrophyta, Cryptophyta, and flagellates. Contamination with an artificial mix of pesticides and trace metal elements resulted in a decrease in the number of interactions between phytoplankton and bacterioplankton, especially for offshore waters. Resuspension of contaminated sediment also altered the interactions between both compartments. The release of nutrients stored in the sediment allowed the growth of nutrient limited phytoplankton species with marked consequences for the interactions with bacterioplankton, with a predominance of positive interactions, whereas in lagoon waters, negative interactions were mostly observed. Overall, this study showed that chemical contamination and sediment resuspension resulted in significant effects on phytoplankton-bacterioplankton interactions that can alter the functioning of anthropogenic coastal ecosystems.
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Affiliation(s)
- Olivier Pringault
- Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO UM 110, 13288, Marseille, France; MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France; Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France.
| | - Marc Bouvy
- MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France
| | - Claire Carre
- MARBEC Univ Montpellier, IRD, Ifremer, Montpellier, France
| | - Kaouther Mejri
- Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France
| | | | | | | | - Asma Sakka Hlaili
- Faculté des Sciences de Bizerte, Université de Carthage, 7021, Zarzouna, Bizerte, France; Laboratoire d'Ecologie, de Biologie et de Physiologie des Organismes Aquatiques, LR18ES41, Université de Tunis El Manar, Tunis, France
| | - Marisol Goni-Urriza
- Universite de Pau et des Pays de L'Adour, E2S UPPA, CNRS, IPREM, 64000, Pau, France
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Draredja MA, Frihi H, Boualleg C, Abadie E, Laabir M. Distribution of dinoflagellate cyst assemblages in recent sediments from a southern Mediterranean lagoon (Mellah, Algeria) with emphasis on toxic species. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:25173-25185. [PMID: 32347479 DOI: 10.1007/s11356-020-08830-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
This is the first study on the dinoflagellate cysts in Algerian waters and in Mellah Lagoon (South Western Mediterranean), located within a protected reserve. In total, 42 species of dinocysts belonging to 7 orders, 12 families and 23 genera, were identified in the 26 superficial sediment samples from Mellah Lagoon. The distribution of dinocysts in the sediment of this lagoon is heterogeneous. Indeed, their abundance oscillates between 1 and 315 cysts g-1 dry sediment (DS). Cyst morphotype assemblages were dominated by a few numbers of species: Alexandrium minutum (15.87%), Gonyaulax verior (9.81%), Protoperidinium spp. (7.74%), Alexandrium affine (7.05%), Scrippsiella trochoidea (6.67%), and Alexandrium pseudogonyaulax (6.19%). There is a positive correlation between the density of cysts and the depth (r = 0.61; p < 0.05), organic matter (r = 0.70; p < 0.05), water content (r = 0.71; p < 0.05), and the fine fraction of sediment (r = 0.74; p < 0.05). Surprisingly, although the Mellah Lagoon is almost semi-closed, it holds an important specific richness in dinocysts (42 species) higher than others observed in Mediterranean lagoons. However, cyst abundances are low compared to other lagoons in the Mediterranean Sea. Finally, the presence of dinocysts of Alexandrium catenella/tamarense, A. minutum, and Gymnodinium catenatum associated to paralytic shellfish toxins, A. pseudogonyaulax which produces goniodomin A, also Protoceratium reticulatum and Gonyaulax spinifera complex which produce yessotoxins, needs to implement a monitoring program to prevent a potential human intoxication due to the consumption of contaminated sea products by these potent neurotoxins.
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Affiliation(s)
- Mohamed Anis Draredja
- Laboratory of Aquatic and Terrestrial Ecosystems, Faculty of Sciences of Nature and Life, M.C Messaadia University, PB 1553, 41000, Souk Ahras, Algeria.
- Marine Bioressources Laboratory, Faculty of Sciences, Badji Mokhtar University, PB 12, 23000, Annaba, Algeria.
- MARBEC, University of Montpellier, IRD, Ifremer, CNRS, 34095, Montpellier Cedex 5, France.
| | - Hocine Frihi
- Marine Bioressources Laboratory, Faculty of Sciences, Badji Mokhtar University, PB 12, 23000, Annaba, Algeria
| | - Chahinaise Boualleg
- Laboratory of Aquatic and Terrestrial Ecosystems, Faculty of Sciences of Nature and Life, M.C Messaadia University, PB 1553, 41000, Souk Ahras, Algeria
| | | | - Mohamed Laabir
- MARBEC, University of Montpellier, IRD, Ifremer, CNRS, 34095, Montpellier Cedex 5, France
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Bejaoui S, Michán C, Telahigue K, Nechi S, Cafsi ME, Soudani N, Blasco J, Costa PM, Alhama J. Metal body burden and tissue oxidative status in the bivalve Venerupis decussata from Tunisian coastal lagoons. MARINE ENVIRONMENTAL RESEARCH 2020; 159:105000. [PMID: 32662434 DOI: 10.1016/j.marenvres.2020.105000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/24/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
Coastal transitional waters are exposed to many anthropogenic threats. This study aims to assess the trace metals' pollution status of transitional waters by evaluating its biological effects in the clam Venerupis decussata. Among the studied sites along the Tunisian littoral, South Tunis and Boughrara were the most impacted, since clams from these two lagoons presented significant differences in: (i) trace metal contents, (ii) in-cell hydrogen peroxide, (iii) enzymatic and non-enzymatic defenses, (iv) damage to lipids and proteins, and (v) protein post-translational modifications. These changes related to evident histopathological traits. PCA showed a clear separation between the digestive gland and gills tissues and illustrated an impact gradient in Tunisian coastal lagoons. Water temperature was revealed as an added natural stressor that, when concurring with high pollution, may jeopardize an ecosystem's health and contribute to the accumulation of hazardous metals in organisms.
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Affiliation(s)
- Safa Bejaoui
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain; Laboratory of Ecology, Biology and Physiology of Aquatic Organisms, Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia
| | - Carmen Michán
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain
| | - Khaoula Telahigue
- Anatomy and Cytology Service, CHU Mohamed Taher Maamouri Hospital, University Tunis El Manar, Tunis, Tunisia
| | - Salwa Nechi
- Anatomy and Cytology Service, CHU Mohamed Taher Maamouri Hospital, University Tunis El Manar, Tunis, Tunisia
| | - Mhamed El Cafsi
- Laboratory of Ecology, Biology and Physiology of Aquatic Organisms, Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia
| | - Nejla Soudani
- Laboratory of Ecology, Biology and Physiology of Aquatic Organisms, Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia
| | - Julián Blasco
- Dpt. Ecology and Coastal Management, ICMAN-CSIC, Campus Rio San Pedro, E-11510, Puerto Real (Cadiz), Spain
| | - Pedro M Costa
- UCIBIO - Applied Molecular Biosciences Unit, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | - José Alhama
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071, Córdoba, Spain.
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8
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Ben Gharbia H, Laabir M, Ben Mhamed A, Gueroun SKM, Daly Yahia MN, Nouri H, M'Rabet C, Shili A, Kéfi-Daly Yahia O. Occurrence of epibenthic dinoflagellates in relation to biotic substrates and to environmental factors in Southern Mediterranean (Bizerte Bay and Lagoon, Tunisia): An emphasis on the harmful Ostreopsis spp., Prorocentrum lima and Coolia monotis. HARMFUL ALGAE 2019; 90:101704. [PMID: 31806162 DOI: 10.1016/j.hal.2019.101704] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Harmful events associated with epibenthic dinoflagellates, have been reported more frequently over the last decades. Occurrence of potentially toxic benthic dinoflagellates, on the leaves of two magnoliophytes (Cymodocea nodosa and Zostera noltei) and thalli of the macroalgae (Ulva rigida), was monitored over one year (From May 2015 to April 2016) in the Bizerte Bay and Lagoon (North of Tunisia, Southern Mediterranean Sea). The investigated lagoon is known to be highly anthropized. This is the first report on the seasonal distribution of epibenthic dinoflagellates hosted by natural substrates, from two contrasted, adjacent coastal Mediterranean ecosystems. The environmental factors promoting the development of the harmful epibenthic dinoflagellates Ostreopsis spp., Prorocentrum lima and Coolia monotis were investigated. The highest cell densities were reached by Ostreopsis spp. (1.9 × 103 cells g-1 FW, in October 2015), P. lima (1.6 × 103 cells g-1 FW, in June 2015) and C. monotis (1.1 × 103 cells g-1 FW, in May 2015). C. nodosa and Z. noltei were the most favorable host macrophytes for C. monotis (in station L2) and Ostreopsis spp. (in station L3), respectively. Positive correlations were recorded between Ostreopsis spp. and temperature. Densities of the epibenthic dinoflagellates varied according to the collection site, and a great disparity was observed between the Bay and the Lagoon. Maximum concentrations were recorded on C. nodosa leaves from the Bizerte Bay, while low epiphytic cell abundances were associated with macrophytes sampled from the Bizerte Lagoon. The observed differences in dinoflagellate abundances between the two ecosystems (Bay-Lagoon) seemed not related to the nutrients, but rather to the poor environmental conditions in the lagoon.
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Affiliation(s)
- Hela Ben Gharbia
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia.
| | - Mohamed Laabir
- Center for Marine Biodiversity, Exploitation and Conservation (MARBEC), Institut de Recherche pour le Développement (IRD), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Centre National de la Recherche Scientifique (CNRS), Montpellier University, Place Eugène Bataillon, CC093, Montpellier, Cedex 5, F-34095, France
| | - Abdelouahed Ben Mhamed
- National Institute for Fisheries Research, Central laboratories, Bd Sidi Abderrahmane Ain Diab 2, Casablanca, Morocco
| | - Sonia Khadija Maïté Gueroun
- Faculty of Sciences of Bizerte, Laboratory of Aquatic Systems Biodiversity and Functioning, 7021 Zarzouna, Carthage University, Bizerte, Tunisia
| | - Mohamed Néjib Daly Yahia
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
| | - Habiba Nouri
- Institut de Recherche pour le Développement (IRD), 2 Rue Des Sports-El Menzah 1, BP 434, Tunis, 1004, Tunisia
| | - Charaf M'Rabet
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia
| | - Abdessalem Shili
- Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA-Carthage University, Tunis, 1082, Tunisia
| | - Ons Kéfi-Daly Yahia
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia
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Di Poi E, Kraus R, Cabrini M, Finotto S, Flander-Putrle V, Grego M, Kužat N, Ninčević Gladan Ž, Pezzolesi L, Riccardi E, Bernardi Aubry F, Bastianini M. Dinoflagellate resting cysts from surface sediments of the Adriatic Ports: Distribution and potential spreading patterns. MARINE POLLUTION BULLETIN 2019; 147:185-208. [PMID: 30926267 DOI: 10.1016/j.marpolbul.2019.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 01/02/2019] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
The ability of microalgae to preserve viable in coastal sediments as resting forms provides a reservoir of biodiversity and a useful tool to determine species spreadings. This study represents the first port baseline survey on dinoflagellate cysts, investigated in nine Adriatic ports during a cross border project. 40 dinoflagellate taxa were detected. The assemblages resulted in all ports dominated by Lingulodinium polyedra and Alexandrium minutum/affine/tamutum group. General separation to the western and eastern side of the Adriatic regarding cysts assemblage composition, partially abundance, was observed. Six taxa were detected as non-indigenous species for the Adriatic. Two taxa are included in the list of harmful aquatic organisms, indicating the potential threat of ballast waters in the Adriatic. Potential spreading of taxa by general circulation and ballast waters, intra- and extra-Adriatic was investigated. The entering in to force of the ballast waters management regulations should enhance prospects to minimize future harmful impacts.
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Affiliation(s)
- Elena Di Poi
- Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Section of Oceanography, Via A. Piccard 54, 34151 Trieste, Italy.
| | - Romina Kraus
- Ruđer Bošković Institute, Center for Marine Research, Giordano Paliaga 5, 52210 Rovinj, Croatia.
| | - Marina Cabrini
- Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Section of Oceanography, Via A. Piccard 54, 34151 Trieste, Italy.
| | - Stefania Finotto
- ISMAR CNR Institute of Marine Sciences, National Research Council of Italy, Castello 2737/f, 30122 Venice, Italy.
| | - Vesna Flander-Putrle
- National Institute of Biology, Marine Biology Station, Fornače 41, 6330 Piran, Slovenia.
| | - Mateja Grego
- National Institute of Biology, Marine Biology Station, Fornače 41, 6330 Piran, Slovenia.
| | - Nataša Kužat
- Ruđer Bošković Institute, Center for Marine Research, Giordano Paliaga 5, 52210 Rovinj, Croatia.
| | - Živana Ninčević Gladan
- Institute of Oceanography and Fisheries, Šetalište I. Meštrovića 63, 21000 Split, Croatia.
| | - Laura Pezzolesi
- Department of Biological, Geological and Environmental Sciences (BiGeA), University of Bologna, Via Sant'Alberto 163, 48123 Ravenna, Italy.
| | - Elena Riccardi
- Fondazione Centro Ricerche Marine, National Reference Laboratory on Marine Biotoxins, V.le A. Vespucci 2, 47042 Cesenatico, FC, Italy.
| | - Fabrizio Bernardi Aubry
- ISMAR CNR Institute of Marine Sciences, National Research Council of Italy, Castello 2737/f, 30122 Venice, Italy.
| | - Mauro Bastianini
- ISMAR CNR Institute of Marine Sciences, National Research Council of Italy, Castello 2737/f, 30122 Venice, Italy.
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