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Meloni D, Mudadu AG, Abete MC, Bazzoni AM, Griglione A, Avolio R, Serra S, Fois N, Esposito G, Melillo R, Squadrone S. Seasonal variability of trace elements bioaccumulation in Pacific Oysters (Crassostrea gigas) from an experimental pilot farm in the Calich Lagoon (Sardinia, Italy). J Trace Elem Med Biol 2024; 85:127487. [PMID: 38908290 DOI: 10.1016/j.jtemb.2024.127487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 06/24/2024]
Abstract
BACKGROUND Metals pollution is a worldwide environmental issue due to their persistence in the ecosystems, non-degradability, and bioaccumulation in marine biota. Pacific Oysters (Crassostrea gigas) are highly nutritious bivalve representing an important dietary constituent but may accumulate metals through feeding on suspended sediments from surrounding water, then represent a suitable tool for biomonitoring. MATERIALS AND METHODS The occurrence of trace elements (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Rb, Se, Sn, V, Zn) was investigated in Pacific Oysters (Cassostrea gigas) collected from Calich Lagoon in each season of 2019. Samples were homogenized and subjected to microwave acid digestion before being analyzed by inductively coupled plasma-mass spectrometer (ICP-MS). RESULTS The results showed a significant seasonal variation for temperature, dissolved oxygen, chlorophyll, and pH. Moreover, high significant seasonal variation in concentrations of Cd, Mn, Ni, and V was recorded. The highest values were found for Fe (128 mg kg⁻1 w.w.), and Al (112 mg kg⁻1 w.w.) in October, for Zn (113 mg kg⁻1 w.w.) in March and May. CONCLUSIONS Pacific Oysters were confirmed as suitable bioindicators of the health status of coastal lagoons; trace elements concentrations were highly affected by season of collection, and according to literature the highest values were recorded in autumn and summer. The EU legal limits for Cd and Pb were not exceeded, then the farmed oysters were safe to consumers.
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Affiliation(s)
- Domenico Meloni
- Università degli Studi di Sassari, Dipartimento di Medicina Veterinaria, Via Vienna 2, Sassari 07100, Italy
| | - Alessandro Graziano Mudadu
- Istituto Zooprofilattico Sperimentale della Sardegna, Struttura Complessa di Microbiologia e Ispezione degli Alimenti di Origine Animale, Via Duca degli Abruzzi 8, Sassari 07100, Italy
| | - Maria Cesarina Abete
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna, 148, Torino 10154, Italy
| | - Anna Maria Bazzoni
- ARPAS-Agenzia Regionale per la Protezione dell'Ambiente della Sardegna, Via Rockefeller 58/60, Sassari 07100, Italy
| | - Alessandra Griglione
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna, 148, Torino 10154, Italy
| | - Rosa Avolio
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna, 148, Torino 10154, Italy
| | - Simonetto Serra
- AGRIS SARDEGNA - Agenzia per la ricerca in agricoltura, Centro di ricerca di Bonassai, località Bonassai SS 291 km 18,6, Olmedo, SS 07040, Italy
| | - Nicola Fois
- AGRIS SARDEGNA - Agenzia per la ricerca in agricoltura, Centro di ricerca di Bonassai, località Bonassai SS 291 km 18,6, Olmedo, SS 07040, Italy
| | - Giuseppe Esposito
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna, 148, Torino 10154, Italy
| | - Rita Melillo
- Istituto Zooprofilattico Sperimentale della Sardegna, Struttura Complessa di Microbiologia e Ispezione degli Alimenti di Origine Animale, Via Duca degli Abruzzi 8, Sassari 07100, Italy
| | - Stefania Squadrone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna, 148, Torino 10154, Italy.
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Tillmann U, Wietkamp S, Kretschmann J, Chacón J, Gottschling M. Spatial fragmentation in the distribution of diatom endosymbionts from the taxonomically clarified dinophyte Kryptoperidinium triquetrum (= Kryptoperidinium foliaceum, Peridiniales). Sci Rep 2023; 13:8593. [PMID: 37237053 DOI: 10.1038/s41598-023-32949-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 04/05/2023] [Indexed: 05/28/2023] Open
Abstract
Among the photosynthetically active dinophytes, the Kryptoperidiniaceae are unique in having a diatom as endosymbiont instead of the widely present peridinin chloroplast. Phylogenetically, it is unresolved at present how the endosymbionts are inherited, and the taxonomic identities of two iconic dinophyte names, Kryptoperidinium foliaceum and Kryptoperidinium triquetrum, are also unclear. Multiple strains were newly established from the type locality in the German Baltic Sea off Wismar and inspected using microscopy as well as molecular sequence diagnostics of both host and endosymbiont. All strains were bi-nucleate, shared the same plate formula (i.e., po, X, 4', 2a, 7'', 5c, 7s, 5''', 2'''') and exhibited a narrow and characteristically L-shaped precingular plate 7''. Within the molecular phylogeny of Bacillariaceae, endosymbionts were scattered over the tree in a highly polyphyletic pattern, even if they were gained from different strains of a single species, namely K. triquetrum. Notably, endosymbionts from the Baltic Sea show molecular sequences distinct from the Atlantic and the Mediterranean Sea, which is the first report of such a spatial fragmentation in a planktonic species of dinophytes. The two names K. foliaceum and K. triquetrum are taxonomically clarified by epitypification, with K. triquetrum having priority over its synonym K. foliaceum. Our study underlines the need of stable taxonomy for central questions in evolutionary biology.
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Affiliation(s)
- Urban Tillmann
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27 570, Bremerhaven, Germany
| | - Stephan Wietkamp
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27 570, Bremerhaven, Germany
| | - Juliane Kretschmann
- Department Biologie, Systematics, Biodiversity & Evolution of Plants, GeoBio-Center, Ludwig-Maximilians-Universität München, Menzinger Str. 67, 80 638, Munich, Germany
| | - Juliana Chacón
- Department Biologie, Systematics, Biodiversity & Evolution of Plants, GeoBio-Center, Ludwig-Maximilians-Universität München, Menzinger Str. 67, 80 638, Munich, Germany
| | - Marc Gottschling
- Department Biologie, Systematics, Biodiversity & Evolution of Plants, GeoBio-Center, Ludwig-Maximilians-Universität München, Menzinger Str. 67, 80 638, Munich, Germany.
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Ligorini V, Crayol E, Huneau F, Garel E, Malet N, Garrido M, Simon L, Cecchi P, Pasqualini V. Small Mediterranean coastal Lagoons Under Threat: Hydro-ecological Disturbances and Local Anthropogenic Pressures (Size Matters). ESTUARIES AND COASTS : JOURNAL OF THE ESTUARINE RESEARCH FEDERATION 2023:1-24. [PMID: 37362863 PMCID: PMC9970120 DOI: 10.1007/s12237-023-01182-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 06/28/2023]
Abstract
Mediterranean coastal lagoons are affected by multiple threats (demographic pressures, eutrophication, climate change) expected to increase in the future and impact the ecosystem services provided. Conservation norms and scientific studies usually focus on large lagoons (> 0.5 km2) due to their economic importance, while they ignore smaller lagoons. These are poorly understood and often unprotected, despite their prevalence within the Mediterranean region and their importance. Qualitative and quantitative characterisation of small lagoons, in terms of functioning and sensitivity to global and local changes, are needed to develop appropriate management strategies. For this purpose, this work provides the first inventory of all Corsican lagoons and has investigated three of them of small size (Arasu, Santa Giulia, Balistra), characterised by contrasting anthropogenic contexts (highly modified/disturbed, medium disturbance, quasi-pristine). At the regional level, 91 of the 95 lagoons identified are < 0.5 km2, making Corsica a good example for the study of small Mediterranean lagoons. The three case studies showed differences in their seasonal biogeochemical cycles and phytoplankton communities (biomass, diversity, photosynthetic efficiency). Arasu and Santa Giulia lagoons showed an increase in watershed urbanisation (+ 12% and + 6% in 30 years), high phytoplankton biomass, low diversity and blooms of potentially harmful dinoflagellates. Conversely, Balistra lagoon showed a good status overall, but some anthropogenic pollution sources within its watershed. This study demonstrates the importance of small lagoons at regional and Mediterranean scale, and provides knowledge on studied local sites but also potential applications elsewhere. The importance of an integrated approach considering lagoons within their adjacent connected systems (watershed and sea) and anthropogenic contexts is highlighted. Supplementary Information The online version contains supplementary material available at 10.1007/s12237-023-01182-1.
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Affiliation(s)
- Viviana Ligorini
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UAR 3514 Stella Mare, Cordon Lagunaire de la Marana, lieu-dit U Casone, Biguglia, 20620 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
| | - Eléa Crayol
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
| | - Frédéric Huneau
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
| | - Emilie Garel
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
| | - Nathalie Malet
- Ifremer, Laboratoire Environnement Ressources Provence-Azur-Corse (LER/PAC), Implantation de Bastia, Z.I. Furiani, Immeuble Agostini, Bastia, 20600 France
| | - Marie Garrido
- Environmental Agency of Corsica, 14 Avenue Jean Nicoli, Corte, 20250 France
| | - Louise Simon
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UAR 3514 Stella Mare, Cordon Lagunaire de la Marana, lieu-dit U Casone, Biguglia, 20620 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
| | - Philippe Cecchi
- MARBEC, Univ. Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Vanina Pasqualini
- Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France
- CNRS, UAR 3514 Stella Mare, Cordon Lagunaire de la Marana, lieu-dit U Casone, Biguglia, 20620 France
- CNRS, UMR 6134 SPE, BP 52, Corte, 20250 France
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Esposito G, Mudadu AG, Abete MC, Pederiva S, Griglione A, Stella C, Ortu S, Bazzoni AM, Meloni D, Squadrone S. Seasonal accumulation of trace elements in native Mediterranean mussels (Mytilus galloprovincialis Lamarck, 1819) collected in the Calich Lagoon (Sardinia, Italy). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:25770-25781. [PMID: 33471307 DOI: 10.1007/s11356-021-12380-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
The occurrence of 21 trace elements in native Mediterranean mussel (Mytilus galloprovincialis) from the Calich Lagoon, a typical brackish area of the northwest of Sardinia (Italy), was investigated. The seasonal variation of metals in bivalves was considered, and the highest values were found in spring and summer; in particular, a high significant (P < 0.001) temporal variation was reported for silver (Ag) and mercury (Hg). The highest and similar concentrations were registered for aluminium (Al, mean 32 mg kg-1wet weight), iron (Fe, mean 32 mg kg-1 w. w.), and zinc (Zn, mean 25 mg kg-1 w. w.). The maximum limits set by European Regulations for cadmium (Cd), mercury (Hg), and lead (Pb) were never exceeded. Speciation analysis revealed negligible risk related to inorganic arsenic (iAs). Therefore, M. galloprovincialis confirmed its role as suitable bioindicator to monitor the contamination of coastal environments. Although the recommended tolerable weekly intake (TWI) was not exceeded, the levels of aluminium should be carefully evaluated in monitoring plans in the studied lagoon. Graphical abstract.
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Affiliation(s)
- Giuseppe Esposito
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | | | - Maria Cesarina Abete
- Istituto Zooprofilattico del Piemonte, e Valle d'Aosta, Via Bologna 148, 10154, Torino, Liguria, Italy
| | - Sabina Pederiva
- Istituto Zooprofilattico del Piemonte, e Valle d'Aosta, Via Bologna 148, 10154, Torino, Liguria, Italy
| | - Alessandra Griglione
- Istituto Zooprofilattico del Piemonte, e Valle d'Aosta, Via Bologna 148, 10154, Torino, Liguria, Italy
| | - Caterina Stella
- Istituto Zooprofilattico del Piemonte, e Valle d'Aosta, Via Bologna 148, 10154, Torino, Liguria, Italy
| | - Sergio Ortu
- Regional Natural Park of Porto Conte, SP. 55 N. 44, 07041, Alghero, Italy
| | - Anna Maria Bazzoni
- Regional Agency for the Protection of Sardinian Environment, Via Rockefeller 58/60, 07100, Sassari, Italy
| | - Domenico Meloni
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Stefania Squadrone
- Istituto Zooprofilattico del Piemonte, e Valle d'Aosta, Via Bologna 148, 10154, Torino, Liguria, Italy.
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