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Methou P, Guéganton M, Copley JT, Kayama Watanabe H, Pradillon F, Cambon-Bonavita MA, Chen C. Distinct development trajectories and symbiosis modes in vent shrimps. Evolution 2024; 78:413-422. [PMID: 38069598 DOI: 10.1093/evolut/qpad217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/25/2023] [Accepted: 12/04/2023] [Indexed: 03/01/2024]
Abstract
Most animal species have a singular developmental pathway and adult ecology, but developmental plasticity is well-known in some such as honeybees where castes display profoundly different morphology and ecology. An intriguing case is the Atlantic deep-sea hydrothermal vent shrimp pair Rimicaris hybisae and R. chacei that share dominant COI haplotypes and could represent very recently diverging lineages or even morphs of the same species. Rimicaris hybisae is symbiont-reliant with a hypertrophied head chamber (in the Mid-Cayman Spreading Centre), while R. chacei is mixotrophic with a narrow head chamber (on the Mid-Atlantic Ridge). Here, we use X-ray micro-computed tomography and fluorescence in situ hybridization to show that key anatomical shifts in both occur during the juvenile-subadult transition, when R. hybisae has fully established symbiosis but not R. chacei. On the Mid-Atlantic Ridge, the diet of R. chacei has been hypothetically linked to competition with the obligatorily symbiotic congener R. exoculata, and we find anatomical evidence that R. exoculata is indeed better adapted for symbiosis. We speculate the possibility that the distinct development trajectories in R. hybisae and R. chacei may be determined by symbiont colonization at a "critical period" before subadulthood, though further genetic studies are warranted to test this hypothesis along with the true relationship between R. hybisae and R. chacei.
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Affiliation(s)
- Pierre Methou
- X-STAR, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan
| | - Marion Guéganton
- Univ Brest, Ifremer, CNRS, Unité Biologie des Environnements Extrêmes marins Profonds, Plouzané, France
| | - Jonathan T Copley
- Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton, United Kingdom
| | - Hiromi Kayama Watanabe
- X-STAR, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan
| | - Florence Pradillon
- Univ Brest, Ifremer, CNRS, Unité Biologie des Environnements Extrêmes marins Profonds, Plouzané, France
| | | | - Chong Chen
- X-STAR, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan
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Reignier O, Bormans M, Marchand L, Sinquin C, Amzil Z, Zykwinska A, Briand E. Production and composition of extracellular polymeric substances by a unicellular strain and natural colonies of Microcystis: Impact of salinity and nutrient stress. Environ Microbiol Rep 2023; 15:783-796. [PMID: 37697704 PMCID: PMC10667651 DOI: 10.1111/1758-2229.13200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/22/2023] [Indexed: 09/13/2023]
Abstract
The transfer of toxic cyanobacterial Microcystis blooms from freshwater to estuaries constitutes a serious environmental problem worldwide that is expected to expand in scale and intensity with anthropogenic and climate change. The formation and maintenance of Microcystis in colonial form is conditioned to the presence of extracellular polymeric substances (EPS). In this study, we attempted to better understand how the mucilaginous colonial form of Microcystis evolves under environmental stress conditions. In particular, we studied and compared the production and the composition of EPS fractions (attached and free) from natural colonies of a Microcystis bloom and from a unicellular M. aeruginosa strain under salinity and nutrient stress (representing a land-sea continuum). Our results highlighted a greater production of EPS from the natural colonies of Microcystis than the unicellular one under nutrient and combined stress conditions dominated by the attached form. In comparison to the unicellular Microcystis, EPS produced by the colonial form were characterized by high molecular weight polysaccharides which were enriched in uronic acids and hexosamines, notably for the free fraction in response to increased salinities. This complex extracellular matrix gives the cells the ability to aggregate and allows the colonial cyanobacterial population to cope with osmotic shock.
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Cordier T, Angeles IB, Henry N, Lejzerowicz F, Berney C, Morard R, Brandt A, Cambon-Bonavita MA, Guidi L, Lombard F, Arbizu PM, Massana R, Orejas C, Poulain J, Smith CR, Wincker P, Arnaud-Haond S, Gooday AJ, de Vargas C, Pawlowski J. Patterns of eukaryotic diversity from the surface to the deep-ocean sediment. Sci Adv 2022; 8:eabj9309. [PMID: 35119936 PMCID: PMC8816347 DOI: 10.1126/sciadv.abj9309] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Remote deep-ocean sediment (DOS) ecosystems are among the least explored biomes on Earth. Genomic assessments of their biodiversity have failed to separate indigenous benthic organisms from sinking plankton. Here, we compare global-scale eukaryotic DNA metabarcoding datasets (18S-V9) from abyssal and lower bathyal surficial sediments and euphotic and aphotic ocean pelagic layers to distinguish plankton from benthic diversity in sediment material. Based on 1685 samples collected throughout the world ocean, we show that DOS diversity is at least threefold that in pelagic realms, with nearly two-thirds represented by abundant yet unknown eukaryotes. These benthic communities are spatially structured by ocean basins and particulate organic carbon (POC) flux from the upper ocean. Plankton DNA reaching the DOS originates from abundant species, with maximal deposition at high latitudes. Its seafloor DNA signature predicts variations in POC export from the surface and reveals previously overlooked taxa that may drive the biological carbon pump.
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Affiliation(s)
- Tristan Cordier
- Department of Genetics and Evolution, University of Geneva, Geneva, Switzerland
- NORCE Climate, NORCE Norwegian Research Centre AS, Bjerknes Centre for Climate Research, Jahnebakken 5, 5007 Bergen, Norway
- Corresponding author. (T.C.); (A.J.G.); (C.d.V.); (J.P.)
| | - Inès Barrenechea Angeles
- Department of Genetics and Evolution, University of Geneva, Geneva, Switzerland
- Department of Earth Sciences, University of Geneva, Geneva, Switzerland
| | - Nicolas Henry
- Sorbonne Université, CNRS, Station Biologique de Roscoff, UMR 7144, ECOMAP,, 29680 Roscoff, France
- Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 75016 Paris, France
| | - Franck Lejzerowicz
- Center for Microbiome Innovation, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
- Department of Pediatrics, School of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Cédric Berney
- Sorbonne Université, CNRS, Station Biologique de Roscoff, UMR 7144, ECOMAP,, 29680 Roscoff, France
- Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 75016 Paris, France
| | - Raphaël Morard
- MARUM-Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse 8, 28359 Bremen, Germany
| | - Angelika Brandt
- Department of Marine Zoology, Section Crustacea, Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, 60325 Frankfurt, Germany
- Institute for Ecology, Evolution, and Diversity, Goethe-University of Frankfurt, FB 15, Max-von-Laue-Str. 13, 60439 Frankfurt am Main, Germany
| | | | - Lionel Guidi
- Laboratoire d’océanographie de Villefranche (LOV), Observatoire Océanologique, Sorbonne Universités, UPMC Université Paris 06, CNRS, Villefranche-sur-Mer, 06230 Nice, France
| | - Fabien Lombard
- Laboratoire d’océanographie de Villefranche (LOV), Observatoire Océanologique, Sorbonne Universités, UPMC Université Paris 06, CNRS, Villefranche-sur-Mer, 06230 Nice, France
- Institut Universitaire de France (IUF), Paris, France
| | - Pedro Martinez Arbizu
- Senckenberg am Meer, German Centre for Marine Biodiversity Research, Südstrand 44, 26382 Wilhelmshaven, Germany
- FK V IBU, AG Marine Biodiversität, Universität Oldenburg, 26129 Oldenburg, Germany
| | - Ramon Massana
- Department of Marine Biology and Oceanography, Institut de Ciències del Mar (CSIC), Barcelona, Spain
| | - Covadonga Orejas
- Spanish Institute of Oceanography (IEO), Oceanographic Centre of Gijón,, Avda Príncipe de Asturias 70 bis, 33212 Gijón, Spain
| | - Julie Poulain
- Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 75016 Paris, France
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, University Evry, University Paris-Saclay, 91057 Evry, France
| | - Craig R. Smith
- Department of Oceanography, School of Ocean and Earth Science and Technology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Patrick Wincker
- Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 75016 Paris, France
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, University Evry, University Paris-Saclay, 91057 Evry, France
| | | | - Andrew J. Gooday
- National Oceanography Centre, Southampton, European Way, Southampton SO14 3ZH, UK
- Life Sciences Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK
- Corresponding author. (T.C.); (A.J.G.); (C.d.V.); (J.P.)
| | - Colomban de Vargas
- Sorbonne Université, CNRS, Station Biologique de Roscoff, UMR 7144, ECOMAP,, 29680 Roscoff, France
- Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 75016 Paris, France
- Corresponding author. (T.C.); (A.J.G.); (C.d.V.); (J.P.)
| | - Jan Pawlowski
- Department of Genetics and Evolution, University of Geneva, Geneva, Switzerland
- ID-Gene ecodiagnostics, Confignon, 1232 Geneva, Switzerland
- Institute of Oceanology, Polish Academy of Sciences, 81-712 Sopot, Poland
- Corresponding author. (T.C.); (A.J.G.); (C.d.V.); (J.P.)
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Tintillier F, Moriou C, Petek S, Fauchon M, Hellio C, Saulnier D, Ekins M, Hooper JNA, Al-Mourabit A, Debitus C. Quorum Sensing Inhibitory and Antifouling Activities of New Bromotyrosine Metabolites from the Polynesian Sponge Pseudoceratina n. sp. Mar Drugs 2020; 18:E272. [PMID: 32455754 PMCID: PMC7281015 DOI: 10.3390/md18050272] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 01/11/2023] Open
Abstract
Four new brominated tyrosine metabolites, aplyzanzines C-F (1-4), were isolated from the French Polynesian sponge Pseudoceratina n. sp., along with the two known 2-aminoimidazolic derivatives, purealidin A (5) and 6, previously isolated, respectively, from the sponges Psammaplysilla purpurea and Verongula sp. Their structures were assigned based on the interpretation of their NMR and HRMS data. The compounds exhibited quorum sensing inhibition (QSi) and antifouling activities against several strains of bacteria and microalgae. To our knowledge, the QSi activity of this type of bromotyrosine metabolite is described here for the first time.
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Affiliation(s)
- Florent Tintillier
- IRD, Univ de la Polynésie française, Ifremer, ILM, EIO, F-98713 Papeete, French Polynesia; (F.T.); (C.D.)
| | - Céline Moriou
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, 91190 Gif-sur-Yvette, France; (C.M.); (A.A.-M.)
| | - Sylvain Petek
- IRD, Univ de la Polynésie française, Ifremer, ILM, EIO, F-98713 Papeete, French Polynesia; (F.T.); (C.D.)
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280 Plouzane, France; (M.F.); (C.H.)
| | - Marilyne Fauchon
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280 Plouzane, France; (M.F.); (C.H.)
| | - Claire Hellio
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280 Plouzane, France; (M.F.); (C.H.)
| | - Denis Saulnier
- Ifremer, IRD, ILM, Univ de la Polynésie française, EIO, F-98719 Taravao, French Polynesia;
| | - Merrick Ekins
- Queensland Museum, PO Box 3300, South Brisbane BC 4101, Queensland, Australia; (M.E.); (J.N.A.H.)
| | - John N. A. Hooper
- Queensland Museum, PO Box 3300, South Brisbane BC 4101, Queensland, Australia; (M.E.); (J.N.A.H.)
| | - Ali Al-Mourabit
- CNRS, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, 91190 Gif-sur-Yvette, France; (C.M.); (A.A.-M.)
| | - Cécile Debitus
- IRD, Univ de la Polynésie française, Ifremer, ILM, EIO, F-98713 Papeete, French Polynesia; (F.T.); (C.D.)
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280 Plouzane, France; (M.F.); (C.H.)
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Chambault P, Dalleau M, Nicet JB, Mouquet P, Ballorain K, Jean C, Ciccione S, Bourjea J. Contrasted habitats and individual plasticity drive the fine scale movements of juvenile green turtles in coastal ecosystems. Mov Ecol 2020; 8:1. [PMID: 31921423 PMCID: PMC6947949 DOI: 10.1186/s40462-019-0184-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 11/28/2019] [Indexed: 05/08/2023]
Abstract
BACKGROUND A strong behavioural plasticity is commonly evidenced in the movements of marine megafauna species, and it might be related to an adaptation to local conditions of the habitat. One way to investigate such behavioural plasticity is to satellite track a large number of individuals from contrasting foraging grounds, but despite recent advances in satellite telemetry techniques, such studies are still very limited in sea turtles. METHODS From 2010 to 2018, 49 juvenile green turtles were satellite tracked from five contrasting feeding grounds located in the South-West Indian Ocean in order to (1) assess the diel patterns in their movements, (2) investigate the inter-individual and inter-site variability, and (3) explore the drivers of their daily movements using both static (habitat type and bathymetry) and dynamic variables (daily and tidal cycles). RESULTS Despite similarities observed in four feeding grounds (a diel pattern with a decreased distance to shore and smaller home ranges at night), contrasted habitats (e.g. mangrove, reef flat, fore-reef, terrace) associated with different resources (coral, seagrass, algae) were used in each island. CONCLUSIONS Juvenile green turtles in the South-West Indian Ocean show different responses to contrasting environmental conditions - both natural (habitat type and tidal cycle) and anthropogenic (urbanised vs. uninhabited island) demonstrating the ability to adapt to modification of habitat.
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Affiliation(s)
- Philippine Chambault
- UMR MARBEC, IFREMER, CNRS, IRD, University of Montpellier, Avenue Jean Monnet, 34200 Sète, France
| | - Mayeul Dalleau
- Centre d’Etude et de Découverte des Tortues Marines (CEDTM), 6 chemin Dubuisson, Appt. 5, 97436 Saint-Leu, La Réunion France
| | - Jean-Benoît Nicet
- GIE MAREX, 697 Chemin Surprise, La Fontaine, 97436 Saint Leu, La Réunion France
| | - Pascal Mouquet
- Université de La Réunion/UMR ESPACE-DEV, Antenne SEAS-OI, 40 Avenue de Soweto, 97410 Saint-Pierre, La Réunion France
| | - Katia Ballorain
- Centre d’Etude et de Découverte des Tortues Marines (CEDTM), 6 chemin Dubuisson, Appt. 5, 97436 Saint-Leu, La Réunion France
- Biodiversity French Agency, Mayotte and Glorieuses Marine Nature Parks, 6 chemin Dubuisson, Appt. 5, 97436 Saint-Leu, La Réunion France
| | - Claire Jean
- Kelonia, l’observatoire des tortues marines, 46 rue du Général de Gaulle, 97436 Saint Leu, La Réunion France
| | - Stéphane Ciccione
- Kelonia, l’observatoire des tortues marines, 46 rue du Général de Gaulle, 97436 Saint Leu, La Réunion France
| | - Jérôme Bourjea
- UMR MARBEC, IFREMER, CNRS, IRD, University of Montpellier, Avenue Jean Monnet, 34200 Sète, France
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Apremont V, Cambon-Bonavita MA, Cueff-Gauchard V, François D, Pradillon F, Corbari L, Zbinden M. Gill chamber and gut microbial communities of the hydrothermal shrimp Rimicaris chacei Williams and Rona 1986: A possible symbiosis. PLoS One 2018; 13:e0206084. [PMID: 30388125 PMCID: PMC6214521 DOI: 10.1371/journal.pone.0206084] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 10/06/2018] [Indexed: 11/18/2022] Open
Abstract
Rimicaris chacei Williams and Rona 1986, formerly named as Chorocaris chacei, is a caridean shrimp living in deep-sea hydrothermal ecosystems. This shrimp is endemic to the Mid Atlantic Ridge (MAR) and lives at the periphery of aggregates of its well-known congeneric R. exoculata Williams and Rona 1986. Contrasting with the very dense and mobile clusters formed by R. exoculata, R. chacei lives in small groups of several individuals that are not very mobile. Although devoid of the characteristic hypertrophied cephalothorax of R. exoculata, which harbors the ectosymbionts, a microbial community has also been reported in the cephalothorax of R. chacei. Previous data on morphology, behavior and isotopic values indicate a diet based on a combination of feeding on its epibiotic bacteria and scavenging or occasional predation. In this study, our objective was to describe, for the first time, the distribution, morphology and phylogeny of the microbial communities associated with R. chacei. This species is significantly less studied than R. exoculata, but nevertheless represents the only other known example of symbiosis in crustaceans of MAR hydrothermal vent sites. Microbial communities have been observed at the same locations as in R. exoculata (mouthparts, branchiostegites and digestive tract). However, in R. chacei, the surfaces occupied by the bacteria are smaller. The main lineages are affiliated to Epsilon and Gammaproteobacteria in the cephalothorax and to Deferribacteres, Mollicutes, Epsilon and Gammaproteobacteria in the digestive tract. Comparison with the well-described bacterial communities of R. exoculata and hypotheses about the role of these communities in R. chacei are discussed.
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Affiliation(s)
- Vincent Apremont
- IFREMER, Univ Brest, CNRS, Laboratoire de Microbiologie des Environnements Extrêmes, Plouzané, France
- Unité Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Sorbonne Université, MNHN, CNRS, IRD; Equipe Adaptation aux Milieux Extrêmes (AMEX), 7 Quai St Bernard, Paris, France
| | | | - Valérie Cueff-Gauchard
- IFREMER, Univ Brest, CNRS, Laboratoire de Microbiologie des Environnements Extrêmes, Plouzané, France
| | - David François
- IFREMER, Univ Brest, CNRS, Laboratoire de Microbiologie des Environnements Extrêmes, Plouzané, France
| | - Florence Pradillon
- Ifremer centre Bretagne, ZI de la Pointe du Diable, Laboratoire Environnement Profond, REM/EEP/LEP, Plouzané, France
| | - Laure Corbari
- Muséum National d’Histoire naturelle, Institut de Systématique, Évolution, Biodiversité ISYEB—UMR 7205 –CNRS, MNHN, UPMC, EPHE, Paris, France
| | - Magali Zbinden
- Unité Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), Sorbonne Université, MNHN, CNRS, IRD; Equipe Adaptation aux Milieux Extrêmes (AMEX), 7 Quai St Bernard, Paris, France
- * E-mail:
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Litaker RW, Holland WC, Hardison DR, Pisapia F, Hess P, Kibler SR, Tester PA. Ciguatoxicity of Gambierdiscus and Fukuyoa species from the Caribbean and Gulf of Mexico. PLoS One 2017; 12:e0185776. [PMID: 29045489 PMCID: PMC5646788 DOI: 10.1371/journal.pone.0185776] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 09/19/2017] [Indexed: 11/22/2022] Open
Abstract
Dinoflagellate species belonging to the genera Gambierdiscus and Fukuyoa produce ciguatoxins (CTXs), potent neurotoxins that concentrate in fish causing ciguatera fish poisoning (CFP) in humans. While the structures and toxicities of ciguatoxins isolated from fish in the Pacific and Caribbean are known, there are few data on the variation in toxicity between and among species of Gambierdiscus and Fukuyoa. Quantifying the differences in species-specific toxicity is especially important to developing an effective cell-based risk assessment strategy for CFP. This study analyzed the ciguatoxicity of 33 strains representing seven Gambierdiscus and one Fukuyoa species using a cell based Neuro-2a cytotoxicity assay. All strains were isolated from either the Caribbean or Gulf of Mexico. The average toxicity of each species was inversely proportional to growth rate, suggesting an evolutionary trade-off between an investment in growth versus the production of defensive compounds. While there is 2- to 27-fold variation in toxicity within species, there was a 1740-fold difference between the least and most toxic species. Consequently, production of CTX or CTX-like compounds is more dependent on the species present than on the random occurrence of high or low toxicity strains. Seven of the eight species tested (G. belizeanus, G. caribaeus, G. carolinianus, G. carpenteri, Gambierdiscus ribotype 2, G. silvae and F. ruetzleri) exhibited low toxicities, ranging from 0 to 24.5 fg CTX3C equivalents cell-1, relative to G. excentricus, which had a toxicity of 469 fg CTX3C eq. cell-1. Isolates of G. excentricus from other regions have shown similarly high toxicities. If the hypothesis that G. excentricus is the primary source of ciguatoxins in the Atlantic is confirmed, it should be possible to identify areas where CFP risk is greatest by monitoring only G. excentricus abundance using species-specific molecular assays.
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Affiliation(s)
- R. Wayne Litaker
- National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Fisheries and Habitat Research, Beaufort, North Carolina, United States of America
- * E-mail:
| | - William C. Holland
- National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Fisheries and Habitat Research, Beaufort, North Carolina, United States of America
| | - D. Ransom Hardison
- National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Fisheries and Habitat Research, Beaufort, North Carolina, United States of America
| | - Francesco Pisapia
- L'Institut Français de Recherche pour l'Exploitation de la Mer, Laboratoire Phycotoxines, Nantes, France
| | - Philipp Hess
- L'Institut Français de Recherche pour l'Exploitation de la Mer, Laboratoire Phycotoxines, Nantes, France
| | - Steven R. Kibler
- National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Fisheries and Habitat Research, Beaufort, North Carolina, United States of America
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Cowart DA, Durand L, Cambon-Bonavita MA, Arnaud-Haond S. Investigation of bacterial communities within the digestive organs of the hydrothermal vent shrimp Rimicaris exoculata provide insights into holobiont geographic clustering. PLoS One 2017; 12:e0172543. [PMID: 28296889 PMCID: PMC5351989 DOI: 10.1371/journal.pone.0172543] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 02/05/2017] [Indexed: 01/16/2023] Open
Abstract
Prokaryotic communities forming symbiotic relationships with the vent shrimp, Rimicaris exoculata, are well studied components of hydrothermal ecosystems at the Mid-Atlantic Ridge (MAR). Despite the tight link between host and symbiont, the observed lack of spatial genetic structure seen in R. exoculata contrasts with the geographic differentiation detected in specific bacterial ectosymbionts. The geographic clustering of bacterial lineages within a seemingly panmictic host suggests either the presence of finer scale restriction to gene flow not yet detected in the host, horizontal transmission (environmental selection) of its endosymbionts as a consequence of unique vent geochemistry, or vertically transmitted endosymbionts that exhibit genetic differentiation. To identify which hypothesis best fits, we tested whether bacterial assemblages exhibit differentiation across sites or host populations by performing a 16S rRNA metabarcoding survey on R. exoculata digestive prokaryote samples (n = 31) taken from three geochemically distinct vents across MAR: Rainbow, Trans-Atlantic Geotraverse (TAG) and Logatchev. Analysis of communities across two organs (digestive tract, stomach), three molt colors (white, red, black) and three life stages (eggs, juveniles, adults) also provided insights into symbiont transmission mode. Examining both whole communities and operational taxonomic units (OTUs) confirmed the presence of three main epibionts: Epsilonproteobacteria, Mollicutes and Deferribacteres. With these findings, we identified a clear pattern of geographic segregation by vent in OTUs assigned to Epsilonproteobacteria. Additionally, we detected evidence for differentiation among all communities associated to vents and life stages. Overall, results suggest a combination of environmental selection and vertical inheritance of some of the symbiotic lineages.
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Affiliation(s)
- Dominique A. Cowart
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) UMR MARBEC (Marine Biodiversity, Exploitation and Conservation) BP 17, Sète - France
| | - Lucile Durand
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) Laboratoire de Microbiologie des Environnements Extrêmes, UMR6197, Département des Ressources physiques et Ecosystèmes de Fond de mer (REM) ZI pointe du diable, CS 10070, Plouzané - France
| | - Marie-Anne Cambon-Bonavita
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) Laboratoire de Microbiologie des Environnements Extrêmes, UMR6197, Département des Ressources physiques et Ecosystèmes de Fond de mer (REM) ZI pointe du diable, CS 10070, Plouzané - France
- UBO, UMR 6197, UBO, Ifremer, CNRS, IUEM Rue Dumont d'Urville, Plouzané - France
- CNRS, UMR 6197, CNRS, Ifremer, UBO, IUEM Rue Dumont d'Urville, Plouzané - France
| | - Sophie Arnaud-Haond
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) UMR MARBEC (Marine Biodiversity, Exploitation and Conservation) BP 17, Sète - France
- * E-mail:
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