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Poirier I, Benhaïm D, Poizot E, Gallon RK, Cauvin E, Lemarchand A, Bertrand M, Lelièvre C, Murat A, Benoit F, Méar Y. Marine aggregates in North Atlantic coast: Microbial characteristics and potential interactions with farmed Atlantic salmon (Salmo salar). MARINE ENVIRONMENTAL RESEARCH 2020; 157:104864. [PMID: 32275501 DOI: 10.1016/j.marenvres.2019.104864] [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: 09/05/2019] [Revised: 12/10/2019] [Accepted: 12/14/2019] [Indexed: 06/11/2023]
Abstract
Microbial contamination of aggregates collected near an Atlantic salmon farm, in the Cherbourg roadstead, was followed monthly over one year to study the dynamics of Vibrio spp. and explore their impact on farmed fish. Salmon state of health was followed through blood and histopathological analyses. Vibrio were systematically found in aggregates with particularly high concentration in August. The Splendidus clade was strongly dominant in aggregates as well as in gills, and an increase in Vibrio diversity was observed in summer and autumn. Results did not demonstrate that aggregates directly impact the bacterial community of gills, but they suggested an aggregates-gills interaction. Gill contamination was correlated with water temperature and probably impacted by amoebae. Vibrio renipiscarius and Vibrio toranzoniae were isolated in North Atlantic for the first time. A better understanding of the interaction between marine aggregates, Vibrio spp. and fish is essential to improve salmon cage farming.
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Affiliation(s)
- Isabelle Poirier
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - David Benhaïm
- Hólar University, Department of Aquaculture and Fish Biology, Háeyri 1, 550 Saudárkrókur, Iceland; Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Emmanuel Poizot
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Régis Kévin Gallon
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Elodie Cauvin
- LABÉO MANCHE, 1352 avenue de Paris, CS 33608, 50008, Saint-Lô, France.
| | - Alexis Lemarchand
- GMG, ZA Produimer, Rue Port des Flamands, 50110, Cherbourg en Cotentin, France.
| | - Martine Bertrand
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Céline Lelièvre
- Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Anne Murat
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
| | - Fabienne Benoit
- LABÉO MANCHE, 1352 avenue de Paris, CS 33608, 50008, Saint-Lô, France.
| | - Yann Méar
- Conservatoire National des Arts et Métiers, Institut National des Sciences et Techniques de la Mer, EPN8, Boulevard Collignon, Tourlaville, 50110, Cherbourg en Cotentin, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130, Cherbourg en Cotentin, France.
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Minniti G, Rød Sandve S, Padra JT, Heldal Hagen L, Lindén S, Pope PB, Ø Arntzen M, Vaaje-Kolstad G. The Farmed Atlantic Salmon ( Salmo salar) Skin-Mucus Proteome and Its Nutrient Potential for the Resident Bacterial Community. Genes (Basel) 2019; 10:genes10070515. [PMID: 31284681 PMCID: PMC6678340 DOI: 10.3390/genes10070515] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/01/2019] [Accepted: 07/04/2019] [Indexed: 12/29/2022] Open
Abstract
Norway is the largest producer and exporter of farmed Atlantic salmon (Salmo salar) worldwide. Skin disorders correlated with bacterial infections represent an important challenge for fish farmers due to the economic losses caused. Little is known about this topic, thus studying the skin-mucus of Salmo salar and its bacterial community depict a step forward in understanding fish welfare in aquaculture. In this study, we used label free quantitative mass spectrometry to investigate the skin-mucus proteins associated with both Atlantic salmon and bacteria. In particular, the microbial temporal proteome dynamics during nine days of mucus incubation with sterilized seawater was investigated, in order to evaluate their capacity to utilize mucus components for growth in this environment. At the start of the incubation period, the largest proportion of proteins (~99%) belonged to the salmon and many of these proteins were assigned to protecting functions, confirming the defensive role of mucus. On the contrary, after nine days of incubation, most of the proteins detected were assigned to bacteria, mainly to the genera Vibrio and Pseudoalteromonas. Most of the predicted secreted proteins were affiliated with transport and metabolic processes. In particular, a large abundance and variety of bacterial proteases were observed, highlighting the capacity of bacteria to degrade the skin-mucus proteins of Atlantic salmon.
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Affiliation(s)
- Giusi Minniti
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway
| | - Simen Rød Sandve
- Faculty of Biosciences, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway
| | - János Tamás Padra
- Department of Medical Biochemistry and Cell Biology, Sahlgrenska Academy, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Live Heldal Hagen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway
| | - Sara Lindén
- Department of Medical Biochemistry and Cell Biology, Sahlgrenska Academy, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Phillip B Pope
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway
| | - Magnus Ø Arntzen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway.
| | - Gustav Vaaje-Kolstad
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway.
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Vercauteren M, De Swaef E, Declercq AM, Polet H, Aerts J, Ampe B, Romalde JL, Haesebrouck F, Devriese L, Decostere A, Chiers K. Scrutinizing the triad of Vibrio tapetis, the skin barrier and pigmentation as determining factors in the development of skin ulcerations in wild common dab (Limanda limanda). Vet Res 2019; 50:41. [PMID: 31159877 PMCID: PMC6547549 DOI: 10.1186/s13567-019-0659-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/21/2019] [Indexed: 11/10/2022] Open
Abstract
Recently, Vibrio tapetis was isolated for the first time from skin ulcerations in wild-caught common dab (Limanda limanda). To further examine its role in the development of these skin lesions, an in vivo experiment was performed. The significance of the skin barrier and in addition the difference between pigmented and non-pigmented side were investigated. Hence, the skin of common dab was treated in three different ways on both the pigmented and non-pigmented side. On a first “treatment zone”, the scales and overlying epidermal tissue were removed whereas in a second zone only the mucus was discarded. The third zone served as a non-treated zone. Thereafter, fish were challenged with V. tapetis. The control group was sham treated. Mortality, clinical signs, severity and size of the developing lesions were recorded. All animals were sacrificed and sampled 21 days post-inoculation. Significantly more fish of the group challenged with V. tapetis died compared to the control group with the highest incidence occurring 4 days post-inoculation. Fish challenged with V. tapetis developed more severe skin ulcerations. In zones where scales and epidermal tissue were removed, the ulcerations were more severe compared to zones where only mucus was eliminated. Ulcerations occurred more frequently, were more severe and larger on the pigmented side. Our data represents prove of V. tapetis as causative agent of ulcerative skin lesions although prior damage of the skin seems to be a major contributing factor. Furthermore, the pigmented side seemed predisposed to the development of skin ulcerations.
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Affiliation(s)
- Maaike Vercauteren
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
| | - Evelien De Swaef
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Annelies M Declercq
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.,Research Division, Flanders Marine Institute (VLIZ), InnovOcean Site, Wandelaarkaai 7, 8400, Ostend, Belgium
| | - Hans Polet
- Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit-Aquatic Environment and Quality, Ankerstraat 1, 8400, Ostend, Belgium
| | - Johan Aerts
- Stress Physiology Research Group, Faculty of Sciences of Ghent University and Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Sciences Unit, Green Bridge Science Park, 8400, Ostend, Belgium
| | - Bart Ampe
- Research Institute for Agriculture, Fisheries and Food (ILVO), Animal Husbandry, Scheldeweg 68, 9090, Melle, Belgium
| | - Jesus L Romalde
- Department of Microbiology and Parasitology, CIBUS-Faculty of Biology, Universidade de Santiago de Compostela, Campus Vida s/n, 15782, Santiago de Compostela, Spain
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Lisa Devriese
- Research Division, Flanders Marine Institute (VLIZ), InnovOcean Site, Wandelaarkaai 7, 8400, Ostend, Belgium
| | - Annemie Decostere
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Koen Chiers
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
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Vercauteren M, De Swaef E, Declercq A, Bosseler L, Gulla S, Balboa S, Romalde JL, Devriese L, Polet H, Boyen F, Chiers K, Decostere A. First isolation of Vibrio tapetis and an atypical strain of Aeromonas salmonicida from skin ulcerations in common dab (Limanda limanda) in the North Sea. JOURNAL OF FISH DISEASES 2018; 41:329-335. [PMID: 29148593 DOI: 10.1111/jfd.12729] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 08/15/2017] [Indexed: 06/07/2023]
Abstract
Skin ulcerations rank amongst the most prevalent lesions affecting wild common dab (Limanda limanda) with an increase in prevalence of up to 3.5% in the Belgian part of the North Sea. A complex aetiology of these ulcerations is suspected, and many questions remain on the exact factors contributing to these lesions. To construct the aetiological spectrum of skin ulcerations in flatfish, a one-day monitoring campaign was undertaken in the North Sea. Fifteen fish presented with one or more ulcerations on the pigmented and/or non-pigmented side. Pathological features revealed various stages of ulcerations with loss of epidermal and dermal tissue, inflammatory infiltrates and degeneration of the myofibers bordering the ulceration, albeit in varying degrees. Upon bacteriological examination, pure cultures of Vibrio tapetis were retrieved in high numbers from five fish and of Aeromonas salmonicida in one fish. The V. tapetis isolates showed cross-reactivity with the sera against the representative strain of serotype O2 originating form a carpet-shell clam (Ruditapes descussatus). Moreover, the A. salmonicida isolates displayed a previously undescribed vapA gene sequence (A-layer type) with possible specificity towards common dab. Further research is necessary to pinpoint the exact role of these agents in the development of skin ulcerations in common dab.
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Affiliation(s)
- M Vercauteren
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - E De Swaef
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - A Declercq
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - L Bosseler
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - S Gulla
- Norwegian Veterinary Institute, Oslo, Norway
| | - S Balboa
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - J L Romalde
- Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - L Devriese
- Animal Sciences Unit - Aquatic Environment and Quality, Institute for Agricultural and Fisheries Research (ILVO), Ostend, Belgium
- Department of Environment and Health, Vrije Universiteit, Amsterdam, The Netherlands
| | - H Polet
- Animal Sciences Unit - Aquatic Environment and Quality, Institute for Agricultural and Fisheries Research (ILVO), Ostend, Belgium
| | - F Boyen
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - K Chiers
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - A Decostere
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Dias GM, Bidault A, Le Chevalier P, Choquet G, Der Sarkissian C, Orlando L, Medigue C, Barbe V, Mangenot S, Thompson CC, Thompson FL, Jacq A, Pichereau V, Paillard C. Vibrio tapetis Displays an Original Type IV Secretion System in Strains Pathogenic for Bivalve Molluscs. Front Microbiol 2018; 9:227. [PMID: 29515533 PMCID: PMC5825899 DOI: 10.3389/fmicb.2018.00227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The Brown Ring Disease (BRD) caused high mortality rates since 1986 in the Manila clam Venerupis philippinarum introduced and cultured in Western Europe from the 1970s. The causative agent of BRD is a Gram-Negative bacterium, Vibrio tapetis, which is also pathogenic to fish. Here we report the first assembly of the complete genome of V. tapetis CECT4600T, together with the genome sequences of 16 additional strains isolated across a broad host and geographic range. Our extensive genome dataset allowed us to describe the pathogen pan- and core genomes and to identify putative virulence factors. The V. tapetis core genome consists of 3,352 genes, including multiple potential virulence factors represented by haemolysins, transcriptional regulators, Type I restriction modification system, GGDEF domain proteins, several conjugative plasmids, and a Type IV secretion system. Future research on the coevolutionary arms race between V. tapetis virulence factors and host resistance mechanisms will improve our understanding of how pathogenicity develops in this emerging pathogen.
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Affiliation(s)
- Graciela M. Dias
- Laboratoire des Sciences de l'Environnement Marin, Université de Bretagne Occidentale, UMR 6539 UBO/Centre National de la Recherche Scientifique/IRD/Ifremer, Institut Universitaire Européen de la Mer, Plouzané, France
- Laboratório de Microbiologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adeline Bidault
- Laboratoire des Sciences de l'Environnement Marin, Université de Bretagne Occidentale, UMR 6539 UBO/Centre National de la Recherche Scientifique/IRD/Ifremer, Institut Universitaire Européen de la Mer, Plouzané, France
| | - Patrick Le Chevalier
- Laboratoire de Biotechnologie et Chimie Marine, Université de Bretagne Occidentale, Quimper, France
| | - Gwenaëlle Choquet
- Laboratoire des Sciences de l'Environnement Marin, Université de Bretagne Occidentale, UMR 6539 UBO/Centre National de la Recherche Scientifique/IRD/Ifremer, Institut Universitaire Européen de la Mer, Plouzané, France
| | - Clio Der Sarkissian
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Ludovic Orlando
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
- Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, Centre National de la Recherche Scientifique UMR 5288, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | - Claudine Medigue
- CEA, Genoscope, Laboratoire d'Analyses Bioinformatiques pour la Génomique et le Métabolisme, Université d'Evry, Centre National de la Recherche Scientifique-UMR 8030, Evry, France
| | - Valerie Barbe
- CEA, Genoscope, Laboratoire d'Analyses Bioinformatiques pour la Génomique et le Métabolisme, Université d'Evry, Centre National de la Recherche Scientifique-UMR 8030, Evry, France
| | - Sophie Mangenot
- CEA, Institut de biologie François-Jacob, Genoscope, Laboratoire de Biologie Moléculaire pour l'Etude des Génomes, Evry, France
| | - Cristiane C. Thompson
- Laboratório de Microbiologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabiano L. Thompson
- Laboratório de Microbiologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Annick Jacq
- Institute for Integrative Biology of the Cell, CEA, Centre National de la Recherche Scientifique, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Vianney Pichereau
- Laboratoire des Sciences de l'Environnement Marin, Université de Bretagne Occidentale, UMR 6539 UBO/Centre National de la Recherche Scientifique/IRD/Ifremer, Institut Universitaire Européen de la Mer, Plouzané, France
| | - Christine Paillard
- Laboratoire des Sciences de l'Environnement Marin, Université de Bretagne Occidentale, UMR 6539 UBO/Centre National de la Recherche Scientifique/IRD/Ifremer, Institut Universitaire Européen de la Mer, Plouzané, France
- *Correspondence: Christine Paillard
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Gulla S, Rønneseth A, Sørum H, Vågnes Ø, Balboa S, Romalde JL, Colquhoun DJ. Vibrio tapetis from wrasse used for ectoparasite bio-control in salmon farming: phylogenetic analysis and serotyping. DISEASES OF AQUATIC ORGANISMS 2017; 125:189-197. [PMID: 28792417 DOI: 10.3354/dao03140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
So-called 'cleaner fish', including various wrasse (Labridae) species, have become increasingly popular in Norwegian salmon farming in recent years for biocontrol of the salmon louse Lepeophtheirus salmonis. Cleaner fish mortalities in salmon farms are, however, often high. Various bacterial agents are frequently associated with episodes of increased cleaner fish mortality, and Vibrio tapetis is regularly cultured from diseased wrasse. In the present study, we investigated the genetic relationships among 54 V. tapetis isolates (34 from wrasse species) by multilocus sequence analysis (MLSA; rpoD, ftsZ, pyrH, rpoA and atpA). In the resulting phylogenetic tree, all wrasse isolates belonged to sub-clusters within V. tapetis subsp. tapetis. Slide agglutination testing further confirmed the complete dominance amongst these isolates of 4 O-antigen serotypes, designated here as V. tapetis subsp. tapetis serotypes O1, O3, O4 and O5, respectively. A pilot challenge trial using serotypes O3, O4 and O5 did not indicate high pathogenicity towards ballan wrasse Labrus bergylta, thus questioning the role of V. tapetis as a primary pathogen of this fish species.
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Affiliation(s)
- Snorre Gulla
- Norwegian Veterinary Institute, Pb 750 Sentrum, 0106 Oslo, Norway
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Levican A, Lasa A, Irgang R, Romalde JL, Poblete-Morales M, Avendaño-Herrera R. Isolation of Vibrio tapetis from two native fish species (Genypterus chilensis and Paralichthys adspersus) reared in Chile and description of Vibrio tapetis subsp. quintayensis subsp. nov. Int J Syst Evol Microbiol 2017; 67:716-723. [DOI: 10.1099/ijsem.0.001705] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Arturo Levican
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Universidad Andrés Bello, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
- Escuela de Tecnología Médica, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Aide Lasa
- Departamento de Microbiología y Parasitología, CIBUS-Facultad de Biología, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Rute Irgang
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Universidad Andrés Bello, Viña del Mar, Chile
| | - Jesús L Romalde
- Departamento de Microbiología y Parasitología, CIBUS-Facultad de Biología, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Matías Poblete-Morales
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Universidad Andrés Bello, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
| | - Ruben Avendaño-Herrera
- Centro de Investigación Marina Quintay (CIMARQ), Universidad Andres Bello, Valparaíso, Chile
- Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Universidad Andrés Bello, Viña del Mar, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, Chile
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8
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Travers MA, Boettcher Miller K, Roque A, Friedman CS. Bacterial diseases in marine bivalves. J Invertebr Pathol 2015. [DOI: 10.1016/j.jip.2015.07.010] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Declercq AM, Chiers K, Soetaert M, Lasa A, Romalde JL, Polet H, Haesebrouck F, Decostere A. Vibrio tapetis isolated from vesicular skin lesions in Dover sole Solea solea. DISEASES OF AQUATIC ORGANISMS 2015; 115:81-86. [PMID: 26119302 DOI: 10.3354/dao02880] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Vibrio tapetis is primarily known as the causative agent for brown ring disease in bivalves, although it has been isolated from cultivated fish during mortalities on farms. Here we describe the first isolation of V. tapetis from wild-caught and subsequently captive-held Dover sole Solea solea. Pathological features consisted of multifocal circular greyish-white skin discolourations evolving into vesicular lesions and subsequent ulcerations on the pigmented side. On the non-pigmented side, multiple circular lesions-white at the center and red at the edges-were evident. Histological examination of the vesicular lesions revealed dermal fluid-filled spaces, collagen tissue necrosis and a mixed inflammatory infiltrate, with large numbers of small rod-shaped bacteria. In the deep skin lesions, loss of scales and dermal connective tissue, with degeneration and fragmentation of the myofibres bordering the ulceration, were noted. Serotyping, DNA-DNA hybridization and REP- and ERIC-PCR techniques showed that the retrieved isolates displayed a profile similar to the representative strain of genotype/serotype O2 which originally was isolated from carpet-shell clam Venerupis decussata and to which isolates obtained from wedge sole Dicologoglossa cuneata were also closely related.
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Affiliation(s)
- A M Declercq
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
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10
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Balboa S, Bastardo A, Romalde JL. Disentangling the population structure and evolution of the clam pathogen Vibrio tapetis. MICROBIAL ECOLOGY 2014; 67:145-154. [PMID: 24276536 DOI: 10.1007/s00248-013-0318-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 10/21/2013] [Indexed: 06/02/2023]
Abstract
Vibrio tapetis is a fastidious slow-growing microorganism that causes the Brown Ring Disease in clams. Recently, two subspecies for this bacterial pathogen have been proposed. We have developed a multilocus sequence typing scheme and performed evolutionary studies of V. tapetis population using the great majority of isolates of V. tapetis obtained worldwide until now (30 isolates). V. tapetis constitutes a high polymorphic population, showing low diversity indexes and some genetic discontinuity among the isolates. Mutation events are more frequent than recombination, although both are approximately equally important for genetic diversification. In fact, the divergence between subspecies occurred exclusively by mutation but the diversity observed among isolates of the same subspecies appeared to be generated mostly by recombination. Between the subspecies, genetic distance is very high and almost no recurrent gene flow exists. This pathogen displays a non-clonal population structure with an ancient spatial segregation population and some degree of geographical isolation, followed by a population expansion, at least for V. tapetis subsp. tapetis. A database from this study was created and hosted on publmlst.org ( http://pubmlst.org/vtapetis/ ).
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Affiliation(s)
- Sabela Balboa
- Departamento de Microbiología y Parasitología, CIBUS-Facultad de Biología, Campus vida, Universidad de Santiago de Compostela, C/ Lope Gómez de Marzoa s/n., 15782, Santiago de Compostela, Spain
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Balboa S, Romalde JL. Multilocus sequence analysis of Vibrio tapetis, the causative agent of Brown Ring Disease: description of Vibrio tapetis subsp. britannicus subsp. nov. Syst Appl Microbiol 2013; 36:183-7. [PMID: 23394813 DOI: 10.1016/j.syapm.2012.12.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 11/22/2012] [Accepted: 12/17/2012] [Indexed: 11/25/2022]
Abstract
Vibrio tapetis is the causative agent of an epizootic infection described in adult clams called Brown Ring Disease (BRD). The isolation of the pathogen from different hosts showed strain variability both at serological and genetic level, allowing the description of three major groups related to the host origin of the isolates. In this work we performed for the first time a phylogenetic study for this pathogen. When including the closest related Vibrio species, all strains of V. tapetis appeared as a robust monophyletic cluster in the trees generated from all genes studied, namely 16S rRNA, atpA, fstZ, gapA, pyrH, recA, rpoA and rpoD and topA, as well as from their concatenated sequences. On the other hand, V. tapetis strains appeared clearly separated in two main clusters, sharing a similarity percentage for the concatenated sequences from 95 to 95.2% and values of DDH between 65.5 and 79.8%. Both clusters are themselves variable, with isolates within each cluster grouped according their host origin. The two clusters are easily distinguishable for their capacity to produce acid from mannitol and arabinose and for the use of citrate. Therefore, the results obtained supported the existence of two subspecies within this pathogen for which the names V. tapetis subsp. tapetis and V. tapetis subsp. britannicus subsp. nov. are proposed.
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Affiliation(s)
- Sabela Balboa
- Departamento de Microbiología y Parasitología, CIBUS-Facultad de Biología, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Bermúdez-Crespo J, Balboa S, Alonso J, Romalde J. Two-dimensional proteome reference map of Vibrio tapetis, the aetiological agent of brown ring disease in clams. J Appl Microbiol 2012; 112:853-64. [DOI: 10.1111/j.1365-2672.2012.05271.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Erauso G, Lakhal F, Bidault-Toffin A, Le Chevalier P, Bouloc P, Paillard C, Jacq A. Evidence for the role of horizontal transfer in generating pVT1, a large mosaic conjugative plasmid from the clam pathogen, Vibrio tapetis. PLoS One 2011; 6:e16759. [PMID: 21326607 PMCID: PMC3033894 DOI: 10.1371/journal.pone.0016759] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 12/29/2010] [Indexed: 02/05/2023] Open
Abstract
The marine bacterium Vibrio tapetis is the causative agent of the brown ring disease, which affects the clam Ruditapes philippinarum and causes heavy economic losses in North of Europe and in Eastern Asia. Further characterization of V. tapetis isolates showed that all the investigated strains harbored at least one large plasmid. We determined the sequence of the 82,266 bp plasmid pVT1 from the CECT4600(T) reference strain and analyzed its genetic content. pVT1 is a mosaic plasmid closely related to several conjugative plasmids isolated from Vibrio vulnificus strains and was shown to be itself conjugative in Vibrios. In addition, it contains DNA regions that have similarity with several other plasmids from marine bacteria (Vibrio sp., Shewanella sp., Listonella anguillarum and Photobacterium profundum). pVT1 contains a number of mobile elements, including twelve Insertion Sequences or inactivated IS genes and an RS1 phage element related to the CTXphi phage of V. cholerae. The genetic organization of pVT1 underscores an important role of horizontal gene transfer through conjugative plasmid shuffling and transposition events in the acquisition of new genetic resources and in generating the pVT1 modular organization. In addition, pVT1 presents a copy number of 9, relatively high for a conjugative plasmid, and appears to belong to a new type of replicon, which may be specific to Vibrionaceae and Shewanelleacae.
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Affiliation(s)
- Gaël Erauso
- Laboratoire des Sciences de l'Environnement Marin, UMR 6539, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, CNRS, Plouzané, France
| | - Fatma Lakhal
- Institut de Génétique et Microbiologie, UMR 8621, Université Paris-Sud 11, CNRS, IFR115, Orsay, France
| | - Adeline Bidault-Toffin
- Laboratoire des Sciences de l'Environnement Marin, UMR 6539, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, CNRS, Plouzané, France
| | - Patrick Le Chevalier
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, Université de Bretagne Occidentale, Quimper, France
| | - Philippe Bouloc
- Institut de Génétique et Microbiologie, UMR 8621, Université Paris-Sud 11, CNRS, IFR115, Orsay, France
| | - Christine Paillard
- Laboratoire des Sciences de l'Environnement Marin, UMR 6539, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, CNRS, Plouzané, France
| | - Annick Jacq
- Institut de Génétique et Microbiologie, UMR 8621, Université Paris-Sud 11, CNRS, IFR115, Orsay, France
- * E-mail:
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