1
|
Neokye EO, Wang X, Thakur KK, Quijon P, Nawaz RA, Basheer S. Climate change impacts on oyster aquaculture - Part I: Identification of key factors. ENVIRONMENTAL RESEARCH 2024; 251:118561. [PMID: 38437901 DOI: 10.1016/j.envres.2024.118561] [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: 12/22/2023] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/06/2024]
Abstract
Oysters are enriched with high-quality protein and are widely known for their exquisite taste. The production of oysters plays an important role in the local economies of coastal communities in many countries, including Atlantic Canada, because of their high economic value. However, because of the changing climatic conditions in recent years, oyster aquaculture faces potentially negative impacts, such as increasing water acidification, rising water temperatures, high salinity, invasive species, algal blooms, and other environmental factors. Although a few isolated effects of climate change on oyster aquaculture have been reported in recent years, it is not well understood how climate change will affect oyster aquaculture from a systematic perspective. In the first part of this study, we present a systematic review of the impacts of climate change and some key environmental factors affecting oyster production on a global scale. The study also identifies knowledge gaps and challenges. In addition, we present key research directions that will facilitate future investigations.
Collapse
Affiliation(s)
- Emmanuel Okine Neokye
- Canadian Centre for Climate Change and Adaptation, University of Prince Edward Island, St. Peter's Bay, Prince Edward Island C0A 2A0, Canada; School of Climate Change and Adaptation, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada
| | - Xiuquan Wang
- Canadian Centre for Climate Change and Adaptation, University of Prince Edward Island, St. Peter's Bay, Prince Edward Island C0A 2A0, Canada; School of Climate Change and Adaptation, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada.
| | - Krishna K Thakur
- Department of Health Management, Centre for Veterinary Epidemiological Research (CVER), Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada
| | - Pedro Quijon
- Coastal Ecology Laboratory, Department of Biology, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada
| | - Rana Ali Nawaz
- Canadian Centre for Climate Change and Adaptation, University of Prince Edward Island, St. Peter's Bay, Prince Edward Island C0A 2A0, Canada; School of Climate Change and Adaptation, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada
| | - Sana Basheer
- Canadian Centre for Climate Change and Adaptation, University of Prince Edward Island, St. Peter's Bay, Prince Edward Island C0A 2A0, Canada; School of Climate Change and Adaptation, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada
| |
Collapse
|
2
|
Blanchon C, Toulza E, Calvayrac C, Eichendorff S, Travers MA, Vidal-Dupiol J, Montagnani C, Escoubas JM, Stavrakakis C, Plantard G. Inactivation of two oyster pathogens by photocatalysis and monitoring of changes in the microbiota of seawater: A case study on Ostreid herpes virus 1 μVar and Vibrio harveyi. CHEMOSPHERE 2024; 346:140565. [PMID: 38303385 DOI: 10.1016/j.chemosphere.2023.140565] [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: 08/17/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 02/03/2024]
Abstract
The pollution of seawater by both biotic (bacteria, viruses) and abiotic contaminants (biocides, pharmaceutical residues) frequently leads to economic losses in aquaculture activities mostly mortality events caused by microbial infection. Advanced Oxidation Processes (AOPs) such as heterogeneous photocatalysis allow the removal of all organic contaminants present in water and therefore could reduce production losses in land-based farms. Oysters in land-based farms such as hatcheries and nurseries suffer from a large number of mortality events, resulting in significant losses. If photocatalysis has been widely studied for the decontamination, its application for disinfection is still overlooked, especially on seawater for viruses. We therefore studied seawater disinfection using the photocatalysis (UV365/TiO2) method in the context of Pacific oyster mortality syndrome (POMS). POMS has been defined as a polymicrobial disease involving an initial viral infection with Ostreid Herpes Virus 1, accompanied by multiple bacterial infections. We investigated the impact of treatment on Vibrio harveyi, a unique opportunistic pathogenic bacterium, and on a complex microbial community reflecting a natural POMS event. Viral inactivation was monitored using experimental infections to determine whether viral particles were still infectious after. Changes in the total bacterial community in seawater were studied by comparing UV365/TiO2 treatment with UV365-irradiated seawater and untreated seawater. In the case of OsHV-1, a 2-h photocatalytic treatment prevents POMS disease and oyster mortality. The same treatment also inactivates 80% of viable Vibrio harveyi culture (c.a. 1.5 log). Since OsHV-1 and Vibrio harveyi are effectively inactivated without long-term destabilization of the total bacterial microbiota in the seawater, photocatalysis appears to be a relevant alternative for disinfecting seawater in land-based oyster beds.
Collapse
Affiliation(s)
- Cécile Blanchon
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France; Biocapteurs Analyses Environnement, Université de Perpignan Via Domitia, 66000, Perpignan, France; Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Sorbonne Université, CNRS, 66650, Banyuls sur Mer, France; PROMES-CNRS UPR 8521, Process Material and Solar Energy, Rambla de la Thermodynamique, 66100, Perpignan, France
| | - Eve Toulza
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France.
| | - Christophe Calvayrac
- Biocapteurs Analyses Environnement, Université de Perpignan Via Domitia, 66000, Perpignan, France; Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Sorbonne Université, CNRS, 66650, Banyuls sur Mer, France
| | - Stanislawa Eichendorff
- PROMES-CNRS UPR 8521, Process Material and Solar Energy, Rambla de la Thermodynamique, 66100, Perpignan, France
| | - Marie-Agnès Travers
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France
| | - Jeremie Vidal-Dupiol
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France
| | - Caroline Montagnani
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France
| | - Jean-Michel Escoubas
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Perpignan, France
| | | | - Gaël Plantard
- PROMES-CNRS UPR 8521, Process Material and Solar Energy, Rambla de la Thermodynamique, 66100, Perpignan, France
| |
Collapse
|
3
|
Doni L, Tassistro G, Oliveri C, Balbi T, Auguste M, Pallavicini A, Canesi L, Pruzzo C, Vezzulli L. Plankton and marine aggregates as transmission vectors for V. aestuarianus 02/041 infecting the pacific oyster Crassostrea gigas. ENVIRONMENTAL MICROBIOLOGY REPORTS 2023; 15:631-641. [PMID: 37776112 PMCID: PMC10667632 DOI: 10.1111/1758-2229.13206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/17/2023] [Indexed: 10/01/2023]
Abstract
Vibrio aestuarianus is a bacterium related to mass mortality outbreaks of the Pacific oyster, Crassostrea gigas in Europe. In this study, the role of different planktonic substrates (phytoplankton cells, marine aggregates and chitin fragments) in mediating V. aestuarianus 02/041 infection of oysters was evaluated by controlled infection experiments. It was shown that phytoplankton cells and, to a greater extent, marine aggregates, significantly promote V. aestuarianus 02/041 intake by C. gigas maintained under stressful conditions in the laboratory. Such intake is associated with higher concentration of the pathogen in the bivalve hemolymph and compromised health status of infected oysters. In contrast, chitin particles do not play a significant role as transmission vector for V. aestuarianus 02/041 infecting its bivalve host. Interestingly, incorporation into marine aggregates foster extracellular proteases (ECPs) activity and a higher expression of bacterial virulence genes, that are potentially involved in bivalve infection. Results from this study contribute to elucidate transmission patterns of V. aestuarianus 02/041 to C. gigas that may be useful for the development of efficient measures to prevent and control oyster disease outbreaks.
Collapse
Affiliation(s)
- Lapo Doni
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
| | - Giovanni Tassistro
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
| | - Caterina Oliveri
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
| | - Teresa Balbi
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
- National Biodiversity Future CenterPalermoItaly
| | - Manon Auguste
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
| | - Alberto Pallavicini
- Department of Life SciencesUniversity of TriesteTriesteItaly
- Stazione Zoologica Anton DohrnNapoliItaly
| | - Laura Canesi
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
- National Biodiversity Future CenterPalermoItaly
| | - Carla Pruzzo
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
| | - Luigi Vezzulli
- Department of Earth, Environmental and Life Sciences (DISTAV)University of GenoaGenoaItaly
- National Biodiversity Future CenterPalermoItaly
| |
Collapse
|
4
|
Cordier C, Stavrakakis C, Morga B, Degrémont L, Voulgaris A, Bacchi A, Sauvade P, Coelho F, Moulin P. Removal of pathogens by ultrafiltration from sea water. ENVIRONMENT INTERNATIONAL 2020; 142:105809. [PMID: 32554141 DOI: 10.1016/j.envint.2020.105809] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
Among water treatment processes, ultrafiltration is known to be efficient for the elimination of micro-organisms (bacteria and viruses). In this study, two pathogens were targeted, a bacterium, Vibrio aestuarianus and a virus, OsHV-1, with the objective to produce high quality water from seawater, in the case of shellfish productions. The retention of those microorganisms by ultrafiltration was evaluated at labscale. In the case of OsHV-1, the protection of oysters was validated by in vivo experiments using oysters spat and larvae, both stages being highly susceptible to the virus. The oysters raised using contaminated seawater which was then subsequently treated by ultrafiltration, had similar mortality to the negative controls. In the case of V. aestuarianus, ultrafiltration allowed a high retention of the bacteria in seawater with concentrations below the detection limits of the 3 analytical methods (flow cytometry, direct seeding and seeding after filtration to 0.22 µm). Thus, the quantity of V. aestuarianus was at least, 400 times inferior to the threshold known to induce mortalities in oysters. Industrial scale experiment on a several months period confirmed the conclusion obtained at lab scale on the Vibrio bacteria retention. Indeed, no bacteria from this genus, potentially harmful for oysters, was detected in permeate and this, whatever the quality of the seawater treated and the bacteria concentration upstream of the membrane. Moreover, the resistance of the process was confirmed with a stability of hydraulic performances over time for two water qualities and even facing an algal bloom. In terms of retention and resistance, ultrafiltration process was validated for the treatment of seawater towards the targeted pathogenic microorganisms, with the aim of biosecuring shellfish productions.
Collapse
Affiliation(s)
- Clémence Cordier
- Aix Marseille Univ., Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2-CNRS-UMR 7340, EPM), Equipe Procédés Membranaires, Europôle de l'Arbois, BP 80, Bat. Laennec, Hall C, 13545 Aix-en-Provence cedex 04, Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2-CNRS-UMR 7340), Aix-Marseille Université, Europôle de l'Arbois, BP 80, Bat. Laennec, Hall C, 13545 Aix-en-Provence cedex 04, France
| | - Christophe Stavrakakis
- Plateforme expérimentale Mollusques Marins, Station Ifremer de Bouin, Polder des Champs, 85230 Bouin, France
| | - Benjamin Morga
- Laboratoire de Génétique et de Pathologie des Mollusques Marins, Station Ifremer de La Tremblade, Avenue du Mus du Loup, 17 390 La Tremblade, France
| | - Lionel Degrémont
- Laboratoire de Génétique et de Pathologie des Mollusques Marins, Station Ifremer de La Tremblade, Avenue du Mus du Loup, 17 390 La Tremblade, France
| | - Alexandra Voulgaris
- Plateforme expérimentale Mollusques Marins, Station Ifremer de Bouin, Polder des Champs, 85230 Bouin, France
| | - Alessia Bacchi
- Plateforme expérimentale Mollusques Marins, Station Ifremer de Bouin, Polder des Champs, 85230 Bouin, France
| | - Patrick Sauvade
- Suez - Aquasource, 20, Avenue Didier Daurat, 31029 Toulouse cedex 04, France
| | - Franz Coelho
- Suez - Aquasource, 20, Avenue Didier Daurat, 31029 Toulouse cedex 04, France
| | - Philippe Moulin
- Aix Marseille Univ., Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2-CNRS-UMR 7340, EPM), Equipe Procédés Membranaires, Europôle de l'Arbois, BP 80, Bat. Laennec, Hall C, 13545 Aix-en-Provence cedex 04, Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2-CNRS-UMR 7340), Aix-Marseille Université, Europôle de l'Arbois, BP 80, Bat. Laennec, Hall C, 13545 Aix-en-Provence cedex 04, France.
| |
Collapse
|
5
|
Mandas D, Salati F, Polinas M, Sanna MA, Zobba R, Burrai GP, Alberti A, Antuofermo E. Histopathological and Molecular Study of Pacific Oyster Tissues Provides Insights into V. aestuarianus Infection Related to Oyster Mortality. Pathogens 2020; 9:pathogens9060492. [PMID: 32575736 PMCID: PMC7350300 DOI: 10.3390/pathogens9060492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 12/12/2022] Open
Abstract
Consumer preference for healthy and sustainable food products has been steadily increasing in recent years. Bivalve mollusks satisfy these characteristics and have captured ever-increasing market shares. However, the expansion of molluscan culture in worldwide and global trade have favored the spread of pathogens around the world. Combined with environmental changes and intensive production systems this has contributed to the occurrence of mass mortality episodes, thus posing a threat to the production of different species, including the Pacific oyster Crassotrea gigas. In the San Teodoro lagoon, one of the most devoted lagoons to extensive Pacific oyster aquaculture in Sardinia, a mortality outbreak was observed with an estimated 80% final loss of animal production. A study combining cultural, biomolecular and histopathological methods was conducted: (1) to investigate the presence of different Vibrio species and OsHV-1 in selected oyster tissues (digestive gland, gills, and mantle); (2) to quantify Vibrio aestuarianus and to evaluate the severity of hemocyte infiltration in infected tissues; (3) to produce post-amplification data and evaluating ToxR gene as a target for phylogenetic analyses. Results provide new insights into V. aestuarianus infection related to oyster mortality outbreaks and pave the way to the development of tools for oyster management.
Collapse
Affiliation(s)
- Daniela Mandas
- Fish Diseases and Aquaculture Center, IZS of Oristano, 09170 Oristano, Italy; (D.M.); (F.S.)
| | - Fulvio Salati
- Fish Diseases and Aquaculture Center, IZS of Oristano, 09170 Oristano, Italy; (D.M.); (F.S.)
| | - Marta Polinas
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
| | - Marina Antonella Sanna
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
| | - Rosanna Zobba
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
| | - Giovanni Pietro Burrai
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
| | - Alberto Alberti
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
- Correspondence: (A.A.); (E.A.); Tel.: +39-3209225647 (A.A.); +39-3398325369 (E.A.)
| | - Elisabetta Antuofermo
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
- Correspondence: (A.A.); (E.A.); Tel.: +39-3209225647 (A.A.); +39-3398325369 (E.A.)
| |
Collapse
|
6
|
Destoumieux-Garzón D, Canesi L, Oyanedel D, Travers MA, Charrière GM, Pruzzo C, Vezzulli L. Vibrio-bivalve interactions in health and disease. Environ Microbiol 2020; 22:4323-4341. [PMID: 32363732 DOI: 10.1111/1462-2920.15055] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022]
Abstract
In the marine environment, bivalve mollusks constitute habitats for bacteria of the Vibrionaceae family. Vibrios belong to the microbiota of healthy oysters and mussels, which have the ability to concentrate bacteria in their tissues and body fluids, including the hemolymph. Remarkably, these important aquaculture species respond differently to infectious diseases. While oysters are the subject of recurrent mass mortalities at different life stages, mussels appear rather resistant to infections. Thus, Vibrio species are associated with the main diseases affecting the worldwide oyster production. Here, we review the current knowledge on Vibrio-bivalve interaction in oysters (Crassostrea sp.) and mussels (Mytilus sp.). We discuss the transient versus stable associations of vibrios with their bivalve hosts as well as technical issues limiting the monitoring of these bacteria in bivalve health and disease. Based on the current knowledge of oyster/mussel immunity and their interactions with Vibrio species pathogenic for oyster, we discuss how differences in immune effectors could contribute to the higher resistance of mussels to infections. Finally, we review the multiple strategies evolved by pathogenic vibrios to circumvent the potent immune defences of bivalves and how key virulence mechanisms could have been positively or negatively selected in the marine environment through interactions with predators.
Collapse
Affiliation(s)
| | - Laura Canesi
- DISTAV, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
| | - Daniel Oyanedel
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Marie-Agnès Travers
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Guillaume M Charrière
- IHPE, Université de Montpellier, CNRS, Ifremer, Université de Perpignan Via Domitia, Montpellier, France
| | - Carla Pruzzo
- DISTAV, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
| | - Luigi Vezzulli
- DISTAV, Department of Earth, Environment and Life Sciences, University of Genoa, Genoa, Italy
| |
Collapse
|
7
|
Correia Peres Costa JC, Floriano B, Bascón Villegas IM, Rodríguez-Ruiz JP, Posada-Izquierdo GD, Zurera G, Pérez-Rodríguez F. Study of the microbiological quality, prevalence of foodborne pathogens and product shelf-life of Gilthead sea bream (Sparus aurata) and Sea bass (Dicentrarchus labrax) from aquaculture in estuarine ecosystems of Andalusia (Spain). Food Microbiol 2020; 90:103498. [PMID: 32336378 DOI: 10.1016/j.fm.2020.103498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/11/2020] [Accepted: 03/17/2020] [Indexed: 12/13/2022]
Abstract
This study was aimed at characterizing microbiologically Gilthead sea bream (Sparus aurata) and Sea bass (Dicentrarchus labrax) produced in two estuarine ecosystems in Andalusia (Spain): the estuary of the river Guadalquivir (La Puebla del Río, Sevilla) (A), and the estuary of the river Guadiana (Ayamonte, Huelva) (B). The collected fish individuals and water were analysed for hygiene indicator microorganisms and pathogens. The statistical analysis of results revealed that microbial counts for the different microbiological parameters were not statistically different for fish type. On the contrary, considering anatomic part, viscera showed significantly higher concentrations for Enterobacteriaceae, total coliforms and for Staphylococcus spp. coagulase +. Furthermore, location A showed in water and fish higher levels for lactic acid bacteria, aerobic mesophilic bacteria, Enterobacteriaceae, total coliforms and Staphylococcus spp. coagulase +. Neither Listeria monocytogenes, nor Salmonella spp. were detected, though Vibrio parahaemolyticus was identified, molecularly, in estuarine water in location B. The predictive analysis demonstrated that the initial microbiological quality could have an impact on product shelf-life, being longer for location B, with better microbiological quality. Results stress the relevance of preventing the microbiological contamination of water in estuary production systems in order to assure the quality and safety of Gilthead sea bream and Sea bass.
Collapse
Affiliation(s)
- Jean Carlos Correia Peres Costa
- Department of Food Science and Technology, Faculty of Veterinary, Agrifood Campus of International Excellence (CeiA3), University of Cordoba, 14014, Córdoba, Spain
| | - Belén Floriano
- Departamento de Biología Molecular e Ingeniería Bioquímica, Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Isabel María Bascón Villegas
- Department of Food Science and Technology, Faculty of Veterinary, Agrifood Campus of International Excellence (CeiA3), University of Cordoba, 14014, Córdoba, Spain
| | - Juan Pablo Rodríguez-Ruiz
- Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute, University of Antwerp, 2610, Wilrijk, Belgium
| | - Guiomar Denisse Posada-Izquierdo
- Department of Food Science and Technology, Faculty of Veterinary, Agrifood Campus of International Excellence (CeiA3), University of Cordoba, 14014, Córdoba, Spain
| | - Gonzalo Zurera
- Department of Food Science and Technology, Faculty of Veterinary, Agrifood Campus of International Excellence (CeiA3), University of Cordoba, 14014, Córdoba, Spain
| | - Fernando Pérez-Rodríguez
- Department of Food Science and Technology, Faculty of Veterinary, Agrifood Campus of International Excellence (CeiA3), University of Cordoba, 14014, Córdoba, Spain.
| |
Collapse
|
8
|
Charles M, Trancart S, Oden E, Houssin M. Experimental infection of Mytilus edulis by two Vibrio splendidus-related strains: Determination of pathogenicity level of strains and influence of the origin and annual cycle of mussels on their sensitivity. JOURNAL OF FISH DISEASES 2020; 43:9-21. [PMID: 31659783 DOI: 10.1111/jfd.13094] [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: 07/25/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
This study aimed at assessing the pathogenicity of two Vibrio splendidus-related species and evaluating the influence of the origin and annual life cycle of mussels on their sensitivity during a bacterial challenge. Thus, in vivo infection assays were made with Vibrio crassostreae 7T4_12 and Vibrio splendidus 3G1_6, over, respectively, thirteen and 9 months, on adult blue mussels from five recruitment areas in France. Two bacterial concentrations were tested: one consistent with the loads of Vibrio spp. in environment and mussel tissues (~105 CFU/ml) and another one much higher (~108 CFU/ml). The tested environmental concentration has no pathogenic effect whatever the time of year, the strain used and the origin of mussels. However, at the highest concentration, a pathogenic effect was observed only at specific moments, and one of the origins appeared to be more resistant. The physiological state of mussels-depending on the time of year-seemed significant in mussels' sensitivity, as their recruitment origin. This study is the first to test the pathogenicity of V. splendidus-related strains at concentrations close to what is found in the wild, over the annual cycle of mussels, and considering their origin.
Collapse
Affiliation(s)
- Maud Charles
- UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UCN, Esplanade de la Paix, Normandie Université, Université de Caen Normandie, Caen, France
- LABÉO Frank Duncombe, Caen, France
| | | | | | - Maryline Houssin
- UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UCN, Esplanade de la Paix, Normandie Université, Université de Caen Normandie, Caen, France
- LABÉO Frank Duncombe, Caen, France
| |
Collapse
|
9
|
Bovio E, Fauchon M, Toueix Y, Mehiri M, Varese GC, Hellio C. The Sponge-Associated Fungus Eurotium chevalieri MUT 2316 and its Bioactive Molecules: Potential Applications in the Field of Antifouling. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:743-752. [PMID: 31494811 DOI: 10.1007/s10126-019-09920-y] [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: 05/29/2019] [Accepted: 08/20/2019] [Indexed: 06/10/2023]
Abstract
The need for new environmentally friendly antifouling and the observation that many marine organisms have developed strategies to keep their surface free of epibionts has stimulated the search for marine natural compounds with antifouling activities. Sponges and in particular fungi associated with them represent one of the most appropriate sources of defence molecules and could represent a promising biomass for the supply of new antifouling compounds. The objective of this work was therefore to evaluate the antifouling potency of 7 compounds isolated from the sponge derived fungus Eurotium chevalieri MUT 2316. The assessment of their activity targeted the inhibition of the adhesion and/or growth of selected marine bacteria (5) and microalgae (5), as well as the inhibition of the mussel's byssus thread formation (tyrosinase activity). The 7 compounds showed bioactivity, with various levels of selectivity for species. Cyclo-L-Trp-L-Ala was the most promising active compound, and led to the inhibition, at very low concentrations (0.001 μg ml-1 in 61.5% of cases), of adhesion and growth of all the microalgae, of selected bacteria, and towards the inhibition of tyrosinase. Promising results were also obtained for echinulin, neoechinulin A, dihydroauroglaucin and flavoglaucin, respectively, leading to inhibition of adhesion and/or growth of 9, 7, 8 and 8 microfouling species at various concentrations.
Collapse
Affiliation(s)
- Elena Bovio
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125, Turin, Italy
- CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, University Nice Côte d'Azur, 60103, Nice, France
| | - Marilyne Fauchon
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France
| | - Yannick Toueix
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France
| | - Mohamed Mehiri
- CNRS, Nice Institute of Chemistry, UMR 7272, Marine Natural Products Team, University Nice Côte d'Azur, 60103, Nice, France
| | - Giovanna Cristina Varese
- Mycotheca Universitatis Taurinensis, Department of Life Sciences and Systems Biology, University of Turin, Viale Mattioli 25, 10125, Turin, Italy.
| | - Claire Hellio
- University Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France.
| |
Collapse
|
10
|
Lupo C, Travers MA, Tourbiez D, Barthélémy CF, Beaunée G, Ezanno P. Modeling the Transmission of Vibrio aestuarianus in Pacific Oysters Using Experimental Infection Data. Front Vet Sci 2019; 6:142. [PMID: 31139636 PMCID: PMC6527844 DOI: 10.3389/fvets.2019.00142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 04/23/2019] [Indexed: 12/12/2022] Open
Abstract
Vibrio aestuarianus is a bacterium related to mortality outbreaks in Pacific oysters, Crassostrea gigas, in France, Ireland, and Scotland since 2011. Knowledge about its transmission dynamics is still lacking, impairing guidance to prevent and control the related disease spread. Mathematical modeling is a relevant approach to better understand the determinants of a disease and predict its dynamics in imperfectly observed pathosystems. We developed here the first marine epidemiological model to estimate the key parameters of V. aestuarianus infection at a local scale in a small and closed oyster population under controlled laboratory conditions. Using a compartmental model accounting for free-living bacteria in seawater, we predicted the infection dynamics using dedicated and model-driven collected laboratory experimental transmission data. We estimated parameters and showed that waterborne transmission of V. aestuarianus is possible under experimental conditions, with a basic reproduction number R0 of 2.88 (95% CI: 1.86; 3.35), and a generation time of 5.5 days. Our results highlighted a bacterial dose–dependent transmission of vibriosis at local scale. Global sensitivity analyses indicated that the bacteria shedding rate, the concentration of bacteria in seawater that yields a 50% chance of catching the infection, and the initial bacterial exposure dose W0 were three critical parameters explaining most of the variation in the selected model outputs related to disease spread, i.e., R0, the maximum prevalence, oyster survival curve, and bacteria concentration in seawater. Prevention and control should target the exposure of oysters to bacterial concentration in seawater. This combined laboratory–modeling approach enabled us to maximize the use of information obtained through experiments. The identified key epidemiological parameters should be better refined by further dedicated laboratory experiments. These results revealed the importance of multidisciplinary approaches to gain consistent insights into the marine epidemiology of oyster diseases.
Collapse
Affiliation(s)
- Coralie Lupo
- Laboratoire de Génétique et Pathologie des Mollusques Marins, SG2M-LGPMM, Ifremer, La Tremblade, France
| | - Marie-Agnès Travers
- Laboratoire de Génétique et Pathologie des Mollusques Marins, SG2M-LGPMM, Ifremer, La Tremblade, France
| | - Delphine Tourbiez
- Laboratoire de Génétique et Pathologie des Mollusques Marins, SG2M-LGPMM, Ifremer, La Tremblade, France
| | - Clément Félix Barthélémy
- Laboratoire de Génétique et Pathologie des Mollusques Marins, SG2M-LGPMM, Ifremer, La Tremblade, France
| | | | | |
Collapse
|
11
|
Lopez-Joven C, Rolland JL, Haffner P, Caro A, Roques C, Carré C, Travers MA, Abadie E, Laabir M, Bonnet D, Destoumieux-Garzón D. Oyster Farming, Temperature, and Plankton Influence the Dynamics of Pathogenic Vibrios in the Thau Lagoon. Front Microbiol 2018; 9:2530. [PMID: 30405583 PMCID: PMC6207591 DOI: 10.3389/fmicb.2018.02530] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 10/03/2018] [Indexed: 02/06/2023] Open
Abstract
Vibrio species have been associated with recurrent mass mortalities of juvenile oysters Crassostrea gigas threatening oyster farming worldwide. However, knowledge of the ecology of pathogens in affected oyster farming areas remains scarce. Specifically, there are no data regarding (i) the environmental reservoirs of Vibrio populations pathogenic to oysters, (ii) the environmental factors favoring their transmission, and (iii) the influence of oyster farming on the persistence of those pathogens. This knowledge gap limits our capacity to predict and mitigate disease occurrence. To address these issues, we monitored Vibrio species potentially pathogenic to C. gigas in 2013 and 2014 in the Thau Lagoon, a major oyster farming region in the coastal French Mediterranean. Sampling stations were chosen inside and outside oyster farms. Abundance and composition of phyto-, microzoo-, and mesozooplankton communities were measured monthly. The spatial and temporal dynamics of plankton and Vibrio species were compared, and positive correlations between plankton species and vibrios were verified by qPCR on isolated specimens of plankton. Vibrio crassostreae was present in the water column over both years, whereas Vibrio tasmaniensis was mostly found in 2013 and Vibrio aestuarianus was never detected. Moreover, V. tasmaniensis and V. crassostreae were found both as free-living or plankton-attached vibrios 1 month after spring mortalities of the oyster juveniles. Overall, V. crassostreae was associated with temperature and plankton composition, whereas V. tasmaniensis correlated with plankton composition only. The abundance of Vibrio species in the water column was similar inside and outside oyster farms, suggesting important spatial dispersion of pathogens in surrounding areas. Remarkably, a major increase in V. tasmaniensis and V. crassostreae was measured in the sediment of oyster farms during cold months. Thus, a winter reservoir of pathogenic vibrios could contribute to their ecology in this Mediterranean shellfish farming ecosystem.
Collapse
Affiliation(s)
- Carmen Lopez-Joven
- IHPE, Université de Montpellier, CNRS, Ifremer, UPVD, Montpellier, France
| | - Jean-Luc Rolland
- IHPE, Université de Montpellier, CNRS, Ifremer, UPVD, Montpellier, France
| | - Philippe Haffner
- IHPE, Université de Montpellier, CNRS, Ifremer, UPVD, Montpellier, France
| | - Audrey Caro
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Cécile Roques
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Claire Carré
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Marie-Agnès Travers
- Ifremer, Laboratoire de Génétique et Pathologie des Mollusques Marins, LGPMM-SG2M, La Tremblade, France
| | - Eric Abadie
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Mohamed Laabir
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Delphine Bonnet
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | | |
Collapse
|