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Gigot M, Tremblay R, Bonnel J, Mathias D, Meziane T, Chauvaud L, Olivier F. Noise pollution causes parental stress on marine invertebrates, the Giant scallop example. Mar Pollut Bull 2024; 203:116454. [PMID: 38735172 DOI: 10.1016/j.marpolbul.2024.116454] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/30/2024] [Accepted: 04/30/2024] [Indexed: 05/14/2024]
Abstract
In marine invertebrates, abiotic stresses on adults can act directly on gametes quality, which impacts phenotype and development success of the offspring. Human activities introduce noise pollution in the marine environment but still few studies on invertebrates have considered the impacts on adult or larval stages separately, and to our knowledge, never investigated the cross-generational effects of anthropogenic noise. This article explores parental effects of pile driving noise associated with the building phase of offshore wind turbines on a coastal invertebrate, Pecten maximus (L.). Adults were exposed to increasing levels of sound during gametogenesis, then their offspring were also exposed. The results highlight that anthropogenic noise experienced by the parents reduces their reproductive investment and modify larval response in similar conditions. Also, larvae from exposed adults grew 6-fold faster and metamorphosed 5-fold faster, which could be an amplified adaptive strategy to reduce the pelagic phase in a stressful environment.
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Affiliation(s)
- Mathilde Gigot
- Laboratoire des Sciences de l'Environnement Marin (LEMAR) UMR 6539 UBO/CNRS/IRD/Ifremer, rue Dumont D'Urville, 29280 Plouzané, France.
| | - Réjean Tremblay
- Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec G5L 2Z9, Canada.
| | - Julien Bonnel
- Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Department, Woods Hole, MA 02543, USA.
| | - Delphine Mathias
- Société d'Observation Multi-Modale de l'Environnement, 115 Rue Claude Chappe, 29280 Plouzané, France
| | - Tarik Meziane
- Biologie des Organismes et Écosystèmes Aquatiques (BOREA) UMR 8067 MNHN, CNRS SU, IRD 207, UA, 61 Rue Buffon CP 53, 75005 Paris, France.
| | - Laurent Chauvaud
- Laboratoire des Sciences de l'Environnement Marin (LEMAR) UMR 6539 UBO/CNRS/IRD/Ifremer, rue Dumont D'Urville, 29280 Plouzané, France.
| | - Frédéric Olivier
- Biologie des Organismes et Écosystèmes Aquatiques (BOREA) UMR 8067 MNHN, CNRS SU, IRD 207, UA, 61 Rue Buffon CP 53, 75005 Paris, France; Univ Brest, CNRS, IRD, IUEM, F-29280 Plouzané, France.
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2
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Gigot M, Olivier F, Cervello G, Tremblay R, Mathias D, Meziane T, Chauvaud L, Bonnel J. Pile driving and drilling underwater sounds impact the metamorphosis dynamics of Pecten maximus (L., 1758) larvae. Mar Pollut Bull 2023; 191:114969. [PMID: 37148589 DOI: 10.1016/j.marpolbul.2023.114969] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 05/08/2023]
Abstract
One of the biggest challenges of the 21st century is to reduce carbon emissions and offshore wind turbines seem to be an efficient solution. However, during the installation phase, high levels of noise are emitted whose impacts remain not well known, particularly on benthic marine invertebrates displaying a bentho-planktonic life-cycle. For one century, larval settlement and subsequent recruitment has been considered as a key topic in ecology as it determines largely population renewal. Whereas several recent studies have shown that trophic pelagic but also natural soundscape cues could trigger bivalve settlement, the role of anthropogenic noise remains poorly documented. Therefore, we conducted experiments to assess potential interacting effects of diet and pile driving or drilling sounds on the great scallop (Pecten maximus) larval settlement. We demonstrate here that pile driving noise stimulates both growth and metamorphosis as well as it increases the total lipid content of competent larvae. Conversely, drilling noise reduces both survival and metamorphosis rates. For the first time, we provide evidence of noise impacts associated to MREs installation on P. maximus larvae and discuss about potential consequences on their recruitment.
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Affiliation(s)
- Mathilde Gigot
- Laboratoire des Sciences de l'Environnement Marin (LEMAR) UMR 6539, Université de Brest, CNRS, Institut Universitaire Européen de la Mer (IUEM), Place Nicolas Copernic, 29280 Plouzané, France.
| | - Frédéric Olivier
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) UMR 8067, MNHN/SU/UNICAEN/UA/CNRS/IRD, 61 Rue Buffon, 75005 Paris, France.
| | - Gauthier Cervello
- Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec G5L 2Z9, Canada.
| | - Réjean Tremblay
- Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec G5L 2Z9, Canada.
| | - Delphine Mathias
- Société d'Observation Multi-Modale de l'Environnement, 38 rue Jim Sevellec, 29200 Brest, France
| | - Tarik Meziane
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) UMR 8067, MNHN/SU/UNICAEN/UA/CNRS/IRD, 61 Rue Buffon, 75005 Paris, France.
| | - Laurent Chauvaud
- Laboratoire des Sciences de l'Environnement Marin (LEMAR) UMR 6539, Université de Brest, CNRS, Institut Universitaire Européen de la Mer (IUEM), Place Nicolas Copernic, 29280 Plouzané, France.
| | - Julien Bonnel
- Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering Department, Woods Hole, MA 02543, USA.
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David F, Herault G, Ameziane N, Meziane T, Badou A, Hubas C. Sex-specific seasonal variations in the fatty acid and carotenoid composition of sea cucumber gonads and implications for aquaculture. Mar Biol 2023; 170:47. [PMID: 36968429 PMCID: PMC10024008 DOI: 10.1007/s00227-023-04198-0] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
UNLABELLED Fatty acids and carotenoids are known to have roles in embryonic and larval development of sea cucumbers, but their changes in gonads during gametogenesis have not yet been studied. To improve our knowledge of the reproductive cycle of sea cucumbers in an aquaculture perspective, we collected 6-11 individuals of the species Holothuria (Panningothuria) forskali Delle Chiaje, 1823 approximately every 2 months from December 2019 to July 2021 east of the Glenan Islands (Brittany - France; 47.710°N, 3.948°W) at a depth of 8-12 m. Our results show that soon after spawning, sea cucumbers take advantage of an increased food availability in spring to rapidly and opportunistically accumulate nutrients in the form of lipids in their gonads (from May to July) and then slowly elongate, desaturate and probably rearrange fatty acids within lipid classes for the next reproductive season according to the specific requirements of both sexes. In contrast, acquisition of carotenoids occurs synchronously with gonads filling and/or through the reabsorption of spent tubules (T5), thus revealing little seasonal variations at the scale of the entire gonad in terms of relative abundance in both sexes. All results suggest that gonads are fully replenished with nutrients by October and that broodstock for induced reproduction could be captured at this moment and kept until the production of larvae is required. Maintaining broodstock for consecutive years would probably be a higher level challenge as the dynamics of tubule recruitment are not fully understood and seem to last for several years. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s00227-023-04198-0.
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Affiliation(s)
- Frank David
- Direction Générale Déléguée à la Recherche, l’Expertise, la Valorisation et l’Enseignement (DGD REVE), Muséum National d’Histoire Naturelle (MNHN), Station Marine de Concarneau, 29900 Concarneau, France
| | - Gwen Herault
- Direction Générale Déléguée à la Recherche, l’Expertise, la Valorisation et l’Enseignement (DGD REVE), Muséum National d’Histoire Naturelle (MNHN), Station Marine de Concarneau, 29900 Concarneau, France
| | - Nadia Ameziane
- Direction Générale Déléguée à la Recherche, l’Expertise, la Valorisation et l’Enseignement (DGD REVE), Muséum National d’Histoire Naturelle (MNHN), Station Marine de Concarneau, 29900 Concarneau, France
- Institut de Systématique, Évolution, Biodiversité (UMR 7205 ISYEB), MNHN, Sorbonne Université, CNRS, EPHE, UA, Station Marine de Concarneau, Quai de la Croix, 29900 Concarneau, France
| | - Tarik Meziane
- Laboratoire Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA), MNHN, Sorbonne Université, CNRS, IRD, UCN, UA, 61 Rue Buffon, 75005 Paris, France
| | - Aïcha Badou
- Direction Générale Déléguée à la Recherche, l’Expertise, la Valorisation et l’Enseignement (DGD REVE), Muséum National d’Histoire Naturelle (MNHN), Station Marine de Concarneau, 29900 Concarneau, France
| | - Cédric Hubas
- Laboratoire Biologie des Organismes et Ecosystèmes Aquatiques (UMR 8067 BOREA), MNHN, Sorbonne Université, CNRS, IRD, UCN, UA, Station Marine de Concarneau, Quai de La Croix, 29900 Concarneau, France
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Hubas C, Monti D, Mortillaro JM, Augagneur S, Carbon A, Duran R, Karama S, Meziane T, Pardon P, Risser T, Tapie N, Thiney N, Budzinski H, Lauga B. Chlordecone-contaminated epilithic biofilms show increased adsorption capacities. Sci Total Environ 2022; 825:153942. [PMID: 35189234 DOI: 10.1016/j.scitotenv.2022.153942] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/11/2022] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
The rivers of Guadeloupe and Martinique (French West Indies) show high levels of chlordecone (CLD) contamination. This persistent molecule has a dramatic impact on both aquatic ecosystems and human health. In these rivers, epilithic biofilms are the main endogenous primary producers and represent a central food source for fish and crustaceans. Recently, their viscoelastic properties have been shown to be effective in bio-assessing pollution in tropical environments. As these properties are closely related to the biochemical composition of the biofilms, biochemical (fatty acids, pigments, extracellular polymeric substances (EPS) monosaccharides) and molecular markers (T-RFLP fingerprints of bacteria, archaea and eukaryotes) were investigated. Strong links between CLD pollution and both biofilm biochemistry and microbial community composition were found. In particular, high levels of CLD were linked with modified exo-polysaccharides corresponding to carbohydrates with enhanced adsorption and adhesion properties. The observed change probably resulted from a preferential interaction between CLD and sugars and/or a differential microbial secretion of EPS in response to the pollutant. These changes were expected to impact viscoelastic properties of epilithic biofilms highlighting the effect of CLD pollution on biofilm EPS matrix. They also suggested that microorganisms implement a CLD scavenging strategy, providing new insights on the role of EPS in the adaptation of microorganisms to CLD-polluted environments.
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Affiliation(s)
- Cédric Hubas
- Muséum National d'Histoire Naturelle, Laboratoire Biologie des Organismes et Ecosystème Aquatiques (UMR 8067 BOREA), Sorbonne Université, CNRS, IRD, Université de Caen Normandie, Université des Antilles, Station Marine de Concarneau, Quai de la croix, 29900 Concarneau, France.
| | - Dominique Monti
- Université des Antilles, Laboratoire Biologie des Organismes et Ecosystème Aquatiques (UMR 8067 BOREA), Muséum National d'Histoire Naturelle, Sorbonne Université, CNRS, IRD, Université de Caen Normandie, Campus de Fouillole, 97110 Pointe-à-Pitre, France; Université des Antilles, Institut de Systématique, Evolution, Biodiversité (UMR 7205 ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Campus de Fouillole, 97110 Pointe-à-Pitre, France
| | - Jean-Michel Mortillaro
- Muséum National d'Histoire Naturelle, Laboratoire Biologie des Organismes et Ecosystème Aquatiques (UMR 8067 BOREA), Sorbonne Université, CNRS, IRD, Université de Caen Normandie, Université des Antilles, 61 rue Buffon, 75005 Paris, France; ISEM, Univ Montpellier, CNRS, IRD, CIRAD, Montpellier, France
| | - Sylvie Augagneur
- Université de Bordeaux, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France; CNRS, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France
| | - Anne Carbon
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - Robert Duran
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - Solange Karama
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - Tarik Meziane
- Muséum National d'Histoire Naturelle, Laboratoire Biologie des Organismes et Ecosystème Aquatiques (UMR 8067 BOREA), Sorbonne Université, CNRS, IRD, Université de Caen Normandie, Université des Antilles, 61 rue Buffon, 75005 Paris, France
| | - Patrick Pardon
- Université de Bordeaux, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France; CNRS, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France
| | - Théo Risser
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France
| | - Nathalie Tapie
- Université de Bordeaux, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France; CNRS, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France
| | - Najet Thiney
- Muséum National d'Histoire Naturelle, Laboratoire Biologie des Organismes et Ecosystème Aquatiques (UMR 8067 BOREA), Sorbonne Université, CNRS, IRD, Université de Caen Normandie, Université des Antilles, 61 rue Buffon, 75005 Paris, France
| | - Hélène Budzinski
- Université de Bordeaux, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France; CNRS, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC - UMR 5805 CNRS), Equipe LPTC, 33405 Talence, France
| | - Béatrice Lauga
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France
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Androuin T, Barbier P, Forêt M, Meziane T, Thomas M, Archambault P, Winkler G, Tremblay R, Olivier F. Pull the trigger: interplay between benthic and pelagic cues driving the early recruitment of a natural bivalve assemblage. Ecosphere 2022. [DOI: 10.1002/ecs2.3672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Thibault Androuin
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Quebec G5L 2Z9 Canada
| | - Pierrick Barbier
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) MNHN CNRS 7208 IRD 207 SU UCN UA 61 rue Buffon Paris 75 005 France
| | - Martin Forêt
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Quebec G5L 2Z9 Canada
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) MNHN CNRS 7208 IRD 207 SU UCN UA 61 rue Buffon Paris 75 005 France
| | - Tarik Meziane
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) MNHN CNRS 7208 IRD 207 SU UCN UA 61 rue Buffon Paris 75 005 France
| | - Mathilde Thomas
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) MNHN CNRS 7208 IRD 207 SU UCN UA 61 rue Buffon Paris 75 005 France
| | - Philippe Archambault
- Département de biologie Québec Océans Université Laval 1045 Avenue de la Médecine Québec Quebec G1V 0A6 Canada
| | - Gesche Winkler
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Quebec G5L 2Z9 Canada
| | - Réjean Tremblay
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Quebec G5L 2Z9 Canada
| | - Frédéric Olivier
- Laboratoire de Biologie des Organismes et Écosystèmes Aquatiques (BOREA) MNHN CNRS 7208 IRD 207 SU UCN UA 61 rue Buffon Paris 75 005 France
- Museum National d’Histoire Naturelle UMR BOREA CNRS 7208/IRD‐207/MNHN/UPMC/UCBN Paris France
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Massé A, Tribollet A, Meziane T, Bourguet-Kondracki ML, Yéprémian C, Sève C, Thiney N, Longeon A, Couté A, Domart-Coulon I. Functional diversity of microboring Ostreobium algae isolated from corals. Environ Microbiol 2020; 22:4825-4846. [PMID: 32990394 DOI: 10.1111/1462-2920.15256] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 09/09/2020] [Accepted: 09/24/2020] [Indexed: 12/15/2022]
Abstract
The filamentous chlorophyte Ostreobium sp. dominates shallow marine carbonate microboring communities, and is one of the major agents of reef bioerosion. While its large genetic diversity has emerged, its physiology remains little known, with unexplored relationship between genotypes and phenotypes (endolithic versus free-living growth forms). Here, we isolated nine strains affiliated to two lineages of Ostreobium (>8% sequence divergence of the plastid gene rbcL), one of which was assigned to the family Odoaceae, from the fast-growing coral host Pocillopora acuta Lamarck 1816. Free-living isolates maintained their bioerosive potential, colonizing pre-bleached coral carbonate skeletons. We compared phenotypes, highlighting shifts in pigment and fatty acid compositions, carbon to nitrogen ratios and stable isotope compositions (δ13 C and δ15 N). Our data show a pattern of higher chlorophyll b and lower arachidonic acid (20:4ω6) content in endolithic versus free-living Ostreobium. Photosynthetic carbon fixation and nitrate uptake, quantified via 8 h pulse-labeling with 13 C-bicarbonate and 15 N-nitrate, showed lower isotopic enrichment in endolithic compared to free-living filaments. Our results highlight the functional plasticity of Ostreobium phenotypes. The isotope tracer approach opens the way to further study the biogeochemical cycling and trophic ecology of these cryptic algae at coral holobiont and reef scales.
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Affiliation(s)
- Anaïs Massé
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France.,IRD-Sorbonne Université (UPMC-CNRS-MNHN), Laboratoire IPSL-LOCEAN, 4 Place Jussieu, Tour 46-00, 5éme étage, Paris Cedex, 75005, France
| | - Aline Tribollet
- IRD-Sorbonne Université (UPMC-CNRS-MNHN), Laboratoire IPSL-LOCEAN, 4 Place Jussieu, Tour 46-00, 5éme étage, Paris Cedex, 75005, France
| | - Tarik Meziane
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum national d'Histoire naturelle (MNHN), SU, UNICAEN, UA, CNRS (UMR7208), IRD; CP53, 61 rue Buffon, Paris, 75005, France
| | - Marie-Lise Bourguet-Kondracki
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
| | - Claude Yéprémian
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
| | - Charlotte Sève
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
| | - Najet Thiney
- Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum national d'Histoire naturelle (MNHN), SU, UNICAEN, UA, CNRS (UMR7208), IRD; CP53, 61 rue Buffon, Paris, 75005, France
| | - Arlette Longeon
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
| | - Alain Couté
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
| | - Isabelle Domart-Coulon
- Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle (MNHN), CNRS (UMR7245); CP54 63 Rue Buffon, Paris, 75005, France
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7
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Olivier F, Gaillard B, Thébault J, Meziane T, Tremblay R, Dumont D, Bélanger S, Gosselin M, Jolivet A, Chauvaud L, Martel AL, Rysgaard S, Olivier AH, Pettré J, Mars J, Gerber S, Archambault P. Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya. Philos Trans A Math Phys Eng Sci 2020; 378:20190353. [PMID: 32862812 PMCID: PMC7481671 DOI: 10.1098/rsta.2019.0353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a 'sea-ice algae-benthos' to a 'phytoplankton-zooplankton' dominance. We used mollusc shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the food exported to the seafloor. Bathyal bivalve Astarte moerchi living at 600 m depth in northern Baffin Bay reveals a clear shift in growth variations and Ba/Ca ratios since the late 1970s, which we relate to a change in food availability. Tissue fatty acid compositions show that this species feeds mainly on microalgae exported from the euphotic zone to the seabed. We, therefore, suggest that changes in pelagic-benthic coupling are likely due either to local changes in sea ice dynamics, mediated through bottom-up regulation exerted by sea ice on phytoplankton production, or to a mismatch between phytoplankton bloom and zooplankton grazing due to phenological change. Both possibilities allow a more regular and increased transfer of food to the seabed. This article is part of the theme issue 'The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'.
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Affiliation(s)
- Frédéric Olivier
- Laboratoire de ‘Biologie des Organismes et Écosystèmes Aquatiques' (BOREA), Muséum national d'Histoire naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement-207, CP53, 61 rue Buffon, 75005 Paris, France
- MNHN, Station Marine de Concarneau, place de la croix BP 225, 29182 Concarneau, France
- e-mail:
| | - Blandine Gaillard
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec, CanadaG5 L 3A1
| | - Julien Thébault
- Institut Universitaire Européen de la Mer, Unité Mixte de Recherche ‘Laboratoire des sciences de l'environnement marin’ (LEMAR, UMR 6539), Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Université de Bretagne Occidentale, Technopôle Brest-Iroise, rue Dumont d'Urville, 29280 Plouzané, France
| | - Tarik Meziane
- Laboratoire de ‘Biologie des Organismes et Écosystèmes Aquatiques' (BOREA), Muséum national d'Histoire naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement-207, CP53, 61 rue Buffon, 75005 Paris, France
| | - Réjean Tremblay
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec, CanadaG5 L 3A1
| | - Dany Dumont
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec, CanadaG5 L 3A1
| | - Simon Bélanger
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, Québec-Océans et BORÉAS, 300 Allée des Ursulines, Rimouski, Québec, CanadaG5L 3A1
| | - Michel Gosselin
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec, CanadaG5 L 3A1
| | - Aurélie Jolivet
- Institut Universitaire Européen de la Mer, Unité Mixte de Recherche ‘Laboratoire des sciences de l'environnement marin’ (LEMAR, UMR 6539), Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Université de Bretagne Occidentale, Technopôle Brest-Iroise, rue Dumont d'Urville, 29280 Plouzané, France
- TBM Environnement/SOMME, 2 rue de Suède, Bloc 03, 56000 Auray, France
| | - Laurent Chauvaud
- Institut Universitaire Européen de la Mer, Unité Mixte de Recherche ‘Laboratoire des sciences de l'environnement marin’ (LEMAR, UMR 6539), Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Université de Bretagne Occidentale, Technopôle Brest-Iroise, rue Dumont d'Urville, 29280 Plouzané, France
| | - André L. Martel
- Zoology Section (Malacology), Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, CanadaK1P 6P4
| | - Søren Rysgaard
- Greenland Climate Research Centre, Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900 Nuuk, Greenland
- Centre for Earth Observation Science, CHR Faculty of Environment Earth and Resources, University of Manitoba, 499 Wallace Building, Winnipeg, CanadaMB R3T 2N2
- Arctic Research Centre, Aarhus University, C. F. Møllers Alle 8, 8000 Aarhus C, Denmark
| | | | - Julien Pettré
- Université de Rennes, Inria, CNRS, IRISA, M2S, 35000 Rennes, France
| | - Jérôme Mars
- Grenoble Alpes, CNRS, Grenoble INP, GIPSA-Lab, 38000 Grenoble, France
| | - Silvain Gerber
- Grenoble Alpes, CNRS, Grenoble INP, GIPSA-Lab, 38000 Grenoble, France
| | - Philippe Archambault
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec, CanadaG5 L 3A1
- Arcticnet, Québec Océans, Takuvik, Département de biologie, Université Laval, 1045, avenue de la Médecine, Laval, Québec, CanadaG1 V 0A6
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8
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Vallet M, Meziane T, Thiney N, Prado S, Hubas C. Laminariales Host Does Impact Lipid Temperature Trajectories of the Fungal Endophyte Paradendryphiella salina (Sutherland.). Mar Drugs 2020; 18:E379. [PMID: 32708010 PMCID: PMC7460085 DOI: 10.3390/md18080379] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 12/04/2022] Open
Abstract
Kelps are colonized by a wide range of microbial symbionts. Among them, endophytic fungi remain poorly studied, but recent studies evidenced yet their high diversity and their central role in algal defense against various pathogens. Thus, studying the metabolic expressions of kelp endophytes under different conditions is important to have a better understanding of their impacts on host performance. In this context, fatty acid composition is essential to a given algae fitness and of interest to food web studies either to measure its nutritional quality or to infer about its contribution to consumers diets. In the present study, Paradendryphiella salina, a fungal endophyte was isolated from Saccharina latissima (L.) and Laminaria digitata (Hudson.) and its fatty acid composition was assessed at increasing salinity and temperature conditions. Results showed that fungal composition in terms of fatty acids displayed algal-dependent trajectories in response to temperature increase. This highlights that C18 unsaturated fatty acids are key components in the host-dependant acclimation of P. salina to salinity and temperature changes.
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Affiliation(s)
- Marine Vallet
- Molécules de Comunications et Adaptation des Microorganismes (MCAM) Muséum National d'Histoire Naturelle, CNRS, 63 Rue Buffon, FR-75005 Paris, France
| | - Tarik Meziane
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, IRD, SU, CNRS, UA, UCN, 61 Rue Buffon, FR-75005 Paris, France
| | - Najet Thiney
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, IRD, SU, CNRS, UA, UCN, 61 Rue Buffon, FR-75005 Paris, France
| | - Soizic Prado
- Molécules de Comunications et Adaptation des Microorganismes (MCAM) Muséum National d'Histoire Naturelle, CNRS, 63 Rue Buffon, FR-75005 Paris, France
| | - Cédric Hubas
- Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, IRD, SU, CNRS, UA, UCN, Station Marine de Concarneau, FR-29900 Concarneau, France
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9
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Vivier B, David F, Marchand C, Thanh-Nho N, Meziane T. Fatty acids, C and N dynamics and stable isotope ratios during experimental degradation of shrimp pond effluents in mangrove water. Mar Environ Res 2019; 150:104751. [PMID: 31271964 DOI: 10.1016/j.marenvres.2019.104751] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/20/2019] [Accepted: 06/25/2019] [Indexed: 06/09/2023]
Abstract
Intensive shrimp farming generates high loads of wastewaters that are released along tropical coastlines with potential impacts on the ecosystems. In this study, we used an experimental approach to analyze the behavior of shrimp pond effluents released in the Can Gio mangrove waterways (Southern Vietnam). We incubated shrimp pond effluents (EF), river water (RV), and a mixture of both (MI; 90% RV + 10% EF) in a dark room and measured fatty acid (FA) compositions, C and N concentrations and stable isotopes ratios (δ13C and δ15N) of suspended particulate matter during 16 days. Fatty acid concentrations rapidly decreased in EF with a 50% loss of FA during the first 24 h of the experiment and a 75% loss after 4 days of incubation. Proportions of the FA 18:1ω7 increased in MI during incubation, suggesting that this FA may be used as a tracer of anthropogenic substances release in marine environments.
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Affiliation(s)
- Baptiste Vivier
- BOREA Biologie des Organismes et Ecosystèmes Aquatiques, UMR 7208 MNHN CNRS SU UA UCN IRD 207, Muséum National d'Histoire Naturelle, 75005, Paris, France
| | - Frank David
- BOREA Biologie des Organismes et Ecosystèmes Aquatiques, UMR 7208 MNHN CNRS SU UA UCN IRD 207, Muséum National d'Histoire Naturelle, 75005, Paris, France.
| | - Cyril Marchand
- Université de la Nouvelle-Calédonie, ISEA, EA 7484, BPR4, 98851, Noumea, New Caledonia, France
| | - Nguyen Thanh-Nho
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Tarik Meziane
- BOREA Biologie des Organismes et Ecosystèmes Aquatiques, UMR 7208 MNHN CNRS SU UA UCN IRD 207, Muséum National d'Histoire Naturelle, 75005, Paris, France
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10
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Forêt M, Barbier P, Tremblay R, Meziane T, Neumeier U, Duvieilbourg E, Olivier F. Trophic cues promote secondary migrations of bivalve recruits in a highly dynamic temperate intertidal system. Ecosphere 2018. [DOI: 10.1002/ecs2.2510] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Martin Forêt
- Unité Mixte de Recherche ‘Biologie des organismes et écosystèmes aquatiques’ (BOREA, UMR 7208) Sorbonne Universités, Muséum national d'Histoire naturelle Université Pierre et Marie Curie Université de Caen Basse‐Normandie Université des Antilles Centre National de la Recherche Scientifique Institut de Recherche pour le Développement‐207 CP53 61 rue Buffon 75005 Paris France
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Québec G5L 2Z9 Canada
| | - Pierrick Barbier
- Unité Mixte de Recherche ‘Biologie des organismes et écosystèmes aquatiques’ (BOREA, UMR 7208) Sorbonne Universités, Muséum national d'Histoire naturelle Université Pierre et Marie Curie Université de Caen Basse‐Normandie Université des Antilles Centre National de la Recherche Scientifique Institut de Recherche pour le Développement‐207 CP53 61 rue Buffon 75005 Paris France
| | - Réjean Tremblay
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Québec G5L 2Z9 Canada
| | - Tarik Meziane
- Unité Mixte de Recherche ‘Biologie des organismes et écosystèmes aquatiques’ (BOREA, UMR 7208) Sorbonne Universités, Muséum national d'Histoire naturelle Université Pierre et Marie Curie Université de Caen Basse‐Normandie Université des Antilles Centre National de la Recherche Scientifique Institut de Recherche pour le Développement‐207 CP53 61 rue Buffon 75005 Paris France
| | - Urs Neumeier
- Institut des Sciences de la Mer Université du Québec à Rimouski 310 Allée des Ursulines Rimouski Québec G5L 2Z9 Canada
| | - Eric Duvieilbourg
- LEMAR UMR 6539 UBO/CNRS/IRD/Ifremer – Institut Universitaire Européen de la Mer Université de Bretagne Occidentale 29280 Plouzané France
| | - Frédéric Olivier
- Unité Mixte de Recherche ‘Biologie des organismes et écosystèmes aquatiques’ (BOREA, UMR 7208) Sorbonne Universités, Muséum national d'Histoire naturelle Université Pierre et Marie Curie Université de Caen Basse‐Normandie Université des Antilles Centre National de la Recherche Scientifique Institut de Recherche pour le Développement‐207 CP53 61 rue Buffon 75005 Paris France
- MNHN Station Marine de Concarneau, Place de la Croix, BP 225 29182 Concarneau Cedex France
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11
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Della Patrona L, Marchand C, Hubas C, Molnar N, Deborde J, Meziane T. Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia). Mar Environ Res 2016; 119:100-113. [PMID: 27262668 DOI: 10.1016/j.marenvres.2016.05.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 05/20/2016] [Accepted: 05/29/2016] [Indexed: 06/05/2023]
Abstract
Meiofauna abundance, biomass and individual size were studied in mangrove sediments subjected to shrimp farm effluents in New Caledonia. Two strategies were developed: i) meiofauna examination during the active (AP) and the non-active (NAP) periods of the farm in five mangrove stands characteristics of the mangrove zonation along this coastline, ii) meiofauna examination every two months during one year in the stand the closest to the pond (i.e. Avicennia marina). Thirteen taxonomic groups of meiofauna were identified, with nematodes and copepods being the most abundant ones. Meiofauna abundance and biomass increased from the land side to the sea side of the mangrove probably as a result of the increased length of tidal immersion. Abundance of total meiofauna was not significantly different before and after the rearing period. However, the effluent-receiving mangrove presented twice the meiofauna abundance and biomass than the control one. Among rare taxa, mites appeared extremely sensitive to this perturbation.
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Affiliation(s)
- L Della Patrona
- Départment of Lagons, Ecosystems and Sustainable Aquaculture (LEAD/NC), Ifremer, 101, Promenade Roger Laroque, Centre IRD, BP 2059-98846, Nouméa Cedex, New Caledonia, France
| | - C Marchand
- IRD, UR 206, UMR 7590-IMPMC, F-98848, New Caledonia, France.
| | - C Hubas
- Muséum National d'Histoire Naturelle, UMR BOREA, Sorbonne Universités, UPMC Univ Paris 6, CNRS 7208, IRD 207, UCBN, UA, CP 53, 61 rue Buffon, 75231, Paris Cedex 5, France
| | - N Molnar
- IRD, UR 206, UMR 7590-IMPMC, F-98848, New Caledonia, France; Muséum National d'Histoire Naturelle, UMR BOREA, Sorbonne Universités, UPMC Univ Paris 6, CNRS 7208, IRD 207, UCBN, UA, CP 53, 61 rue Buffon, 75231, Paris Cedex 5, France
| | - J Deborde
- IRD, UR 206, UMR 7590-IMPMC, F-98848, New Caledonia, France
| | - T Meziane
- Muséum National d'Histoire Naturelle, UMR BOREA, Sorbonne Universités, UPMC Univ Paris 6, CNRS 7208, IRD 207, UCBN, UA, CP 53, 61 rue Buffon, 75231, Paris Cedex 5, France
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12
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Toupoint N, Barbier P, Tremblay R, Archambault P, McKindsey CW, Winkler G, Meziane T, Olivier F. Influence of intertidal recreational fisheries and 'bouchot' mussel culture on bivalve recruitment. Mar Environ Res 2016; 117:1-12. [PMID: 27039134 DOI: 10.1016/j.marenvres.2016.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/22/2016] [Accepted: 03/22/2016] [Indexed: 06/05/2023]
Abstract
In coastal environments, fishing and aquaculture may be important sources of disturbance to ecosystem functioning, the quantification of which must be assessed to make them more sustainable. In the Chausey Archipelago, France, recreational fishing and commercial shellfish farming are the only two evident anthropogenic activities, dominated by bivalve hand-raking and 'bouchot' mussel culture, respectively. This study evaluates the impact of both activities on bivalve recruitment dynamics by comparing primary recruitment intensity (short-term effect) and recruitment efficiency (medium-term effect) by sampling bivalves in reference (undisturbed) and disturbed (i.e. subjected to hand-raking or in 'bouchot' mussel culture areas) parcels throughout and at the end of the recruitment season, respectively. Specific hypotheses evaluated were that (H1) bivalve hand-raking negatively affects bivalve recruitment and that (H2) 'bouchot' mussel culture promotes bivalve recruitment. Patterns in bivalve community structure in reference parcels (i.e. natural pattern) differed between initial and final recruitment, underlining the great importance of early post-settlement processes, particularly secondary dispersal. Primary recruitment intensity was inhibited in hand-raking parcels whereas it was promoted in 'bouchot' mussel culture parcels, but the effect on recruitment efficiency was muted for both activities due to post-settlement processes. Nevertheless, the importance of effects that occur during the first step of recruitment should not be ignored as they may affect bivalve communities and induce immediate consequences on the trophic web through a cascade effect. Finally, it is highlighted that hand-raking damages all life stages of the common cockle Cerastoderma edule, one of the major target species, suggesting that this activity should be managed with greater caution than is currently done.
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Affiliation(s)
- Nicolas Toupoint
- Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski (UQAR), 310, Allée des Ursulines, Rimouski, Québec G5L3A1, Canada.
| | - Pierrick Barbier
- Unité Mixte de Recherche 'Biologie des organismes et écosystèmes aquatiques' (BOREA, UMR 7208), Muséum National d'Histoire Naturelle, Université Pierre et Marie Curie, Université de Caen Basse-Normandie, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement-207, Université des Antilles, CP53, 61 rue Buffon, 75005 Paris, France
| | - Réjean Tremblay
- Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski (UQAR), 310, Allée des Ursulines, Rimouski, Québec G5L3A1, Canada
| | - Philippe Archambault
- Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski (UQAR), 310, Allée des Ursulines, Rimouski, Québec G5L3A1, Canada; Hopkins Marine Station of Stanford University, 120 Ocean View Blvd., Pacific Grove, CA 93950, USA
| | - Christopher W McKindsey
- Demersal and Benthic Sciences Branch, Maurice-Lamontagne Institute, Fisheries and Oceans Canada, P.O. Box1000, Mont-Joli, QC G5H 3Z4, Canada
| | - Gesche Winkler
- Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski (UQAR), 310, Allée des Ursulines, Rimouski, Québec G5L3A1, Canada
| | - Tarik Meziane
- Unité Mixte de Recherche 'Biologie des organismes et écosystèmes aquatiques' (BOREA, UMR 7208), Muséum National d'Histoire Naturelle, Université Pierre et Marie Curie, Université de Caen Basse-Normandie, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement-207, Université des Antilles, CP53, 61 rue Buffon, 75005 Paris, France
| | - Frédéric Olivier
- Unité Mixte de Recherche 'Biologie des organismes et écosystèmes aquatiques' (BOREA, UMR 7208), Muséum National d'Histoire Naturelle, Université Pierre et Marie Curie, Université de Caen Basse-Normandie, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement-207, Université des Antilles, CP53, 61 rue Buffon, 75005 Paris, France
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13
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Aschenbroich A, Marchand C, Molnar N, Deborde J, Hubas C, Rybarczyk H, Meziane T. Spatio-temporal variations in the composition of organic matter in surface sediments of a mangrove receiving shrimp farm effluents (New Caledonia). Sci Total Environ 2015; 512-513:296-307. [PMID: 25634734 DOI: 10.1016/j.scitotenv.2014.12.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/05/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
In order to investigate spatio-temporal variations in the composition and origin of the benthic organic matter (OM) at the sediment surface in mangrove receiving shrimp farm effluents, fatty acid (FA) biomarkers, natural stable isotopes (δ(13)C and δ(15)N), C:N ratios and chlorophyll-a (chl-a) concentrations were determined during the active and the non-active period of the farm. Fatty acid compositions in surface sediments within the mangrove forest indicated that organic matter inputs varied along the year as a result of farm activity. Effluents were the source of fresh particulate organic matter for the mangrove, as evidenced by the unsaturated fatty acid (UFA) distribution. The anthropogenic MUFA 18:1ω9 was not only accumulated at the sediment surface in some parts of the mangrove, but was also exported to the seafront. Direct release of bacteria and enhanced in situ production of fungi, as revealed by specific FAs, stimulated mangrove litter decomposition under effluent runoff condition. Also, microalgae released from ponds contributed to maintain high benthic chl-a concentrations in mangrove sediments in winter and to a shift in microphytobenthic community assemblage. Primary production was high whether the farm released effluent or not which questioned the temporary effect of shrimp farm effluent on benthic microalgae dynamic. This study outlined that mangrove benthic organic matter was qualitatively and quantitatively affected by shrimp farm effluent release and that responses to environmental condition changes likely depended on mangrove stand characteristics.
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Affiliation(s)
- Adélaïde Aschenbroich
- UMR BOREA 7208 CNRS/MNHN/UPMC/IRD/UCBN, Muséum National d'Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 5, France.
| | - Cyril Marchand
- Institut de Recherche pour le Développement (IRD), UMR 7590, UR 206, BP A5, 98848 Nouméa, New Caledonia, France
| | - Nathalie Molnar
- UMR BOREA 7208 CNRS/MNHN/UPMC/IRD/UCBN, Muséum National d'Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 5, France; Institut de Recherche pour le Développement (IRD), UMR 7590, UR 206, BP A5, 98848 Nouméa, New Caledonia, France
| | - Jonathan Deborde
- Institut de Recherche pour le Développement (IRD), UMR 7590, UR 206, BP A5, 98848 Nouméa, New Caledonia, France
| | - Cédric Hubas
- UMR BOREA 7208 CNRS/MNHN/UPMC/IRD/UCBN, Muséum National d'Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 5, France
| | - Hervé Rybarczyk
- UMR BOREA 7208 CNRS/MNHN/UPMC/IRD/UCBN, Muséum National d'Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 5, France
| | - Tarik Meziane
- UMR BOREA 7208 CNRS/MNHN/UPMC/IRD/UCBN, Muséum National d'Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 5, France
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14
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Debenay JP, Marchand C, Molnar N, Aschenbroich A, Meziane T. Foraminiferal assemblages as bioindicators to assess potential pollution in mangroves used as a natural biofilter for shrimp farm effluents (New Caledonia). Mar Pollut Bull 2015; 93:103-120. [PMID: 25758645 DOI: 10.1016/j.marpolbul.2015.02.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 02/05/2015] [Accepted: 02/11/2015] [Indexed: 06/04/2023]
Abstract
In New Caledonia, semi-intensive shrimp farms release untreated effluents into the mangrove. Foraminiferal assemblages were analyzed for assessing the impact of effluent release on the benthic compartment. Comparison was made between samples collected (1) in an effluent receiving mangrove before and after the rearing cycle, and (2) for one-year monitoring an effluent receiving and a control mangrove. The distribution of foraminiferal assemblages was primarily driven by the gradient between Rhizophora stands and salt-flats, related to salinity and tidal elevation, and by seasonal cycles. The potential impact of effluent release was due to the combined effects of normal-saline effluents on surface salinity, and of nutrient input and microbial stimulation on food availability. Foraminiferal assemblages did not indicate a substantial impact of farm effluents and suggest that semi-intensive shrimp farming using mangrove for effluent discharge may appear as a sustainable solution in New Caledonia, when considering only the impact on the mangrove itself.
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Affiliation(s)
- J-P Debenay
- UMR 7159, IPSL/LOCEAN, Centre IRD France Nord, 32 Avenue Henri Varagnat, 93143 Bondy Cedex, France
| | - C Marchand
- IRD, UR 206 - UMR 7590 IMPMC, F-98848 New Caledonia, France.
| | - N Molnar
- IRD, UR 206 - UMR 7590 IMPMC, F-98848 New Caledonia, France; UMR BOREA MNHN-CNRS 7208-IRD-UPMC, Muséum National Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 05, France
| | - A Aschenbroich
- IRD, UR 206 - UMR 7590 IMPMC, F-98848 New Caledonia, France; UMR BOREA MNHN-CNRS 7208-IRD-UPMC, Muséum National Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 05, France
| | - T Meziane
- UMR BOREA MNHN-CNRS 7208-IRD-UPMC, Muséum National Histoire Naturelle, CP 53, 61 rue Buffon, 75231 Paris cedex 05, France
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Hubas C, Jesus B, Ruivo M, Meziane T, Thiney N, Davoult D, Spilmont N, Paterson DM, Jeanthon C. Proliferation of purple sulphur bacteria at the sediment surface affects intertidal mat diversity and functionality. PLoS One 2013; 8:e82329. [PMID: 24340018 PMCID: PMC3855458 DOI: 10.1371/journal.pone.0082329] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 11/01/2013] [Indexed: 11/21/2022] Open
Abstract
There is a relative absence of studies dealing with mats of purple sulphur bacteria in the intertidal zone. These bacteria display an array of metabolic pathways that allow them to disperse and develop under a wide variety of conditions, making these mats important in terms of ecosystem processes and functions. Mass blooms of purple sulphur bacteria develop during summer on sediments in the intertidal zone especially on macroalgal deposits. The microbial composition of different types of mats differentially affected by the development of purple sulphur bacteria was examined, at low tide, using a set of biochemical markers (fatty acids, pigments) and composition was assessed against their influence on ecosystem functions (sediment cohesiveness, CO2 fixation). We demonstrated that proliferation of purple sulphur bacteria has a major impact on intertidal mats diversity and functions. Indeed, assemblages dominated by purple sulphur bacteria (Chromatiaceae) were efficient exopolymer producers and their biostabilisation potential was significant. In addition, the massive growth of purple sulphur bacteria resulted in a net CO2 degassing whereas diatom dominated biofilms represented a net CO2 sink.
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Affiliation(s)
- Cédric Hubas
- Muséum National d’Histoire Naturelle, UMR BOREA 7208 MNHN/CNRS/IRD/UPMC, Paris, France
- * E-mail:
| | - Bruno Jesus
- LUNAM université, Université de Nantes, Mer Molécules Santé EA 2160, Faculté des Sciences et des Techniques, Nantes, France
- Centro de Biodiversidade, Genómica Integrativa e Funcional (BioFIG), Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Mickael Ruivo
- Centro de Biodiversidade, Genómica Integrativa e Funcional (BioFIG), Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Tarik Meziane
- Muséum National d’Histoire Naturelle, UMR BOREA 7208 MNHN/CNRS/IRD/UPMC, Paris, France
| | - Najet Thiney
- Muséum National d’Histoire Naturelle, UMR BOREA 7208 MNHN/CNRS/IRD/UPMC, Paris, France
| | - Dominique Davoult
- UPMC Univ Paris 06, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Roscoff, France
- CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Roscoff, France
| | - Nicolas Spilmont
- CNRS, UMR 8187, LOG, Station Marine de Wimereux, Wimereux, France
| | - David M. Paterson
- Sediment Ecology Research Group, Scottish Ocean Institute, University of St Andrews, St Andrews, Scotland, United Kingdom
| | - Christian Jeanthon
- UPMC Univ Paris 06, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Roscoff, France
- CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Roscoff, France
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Leroy F, Meziane T, Riera P, Comtet T. Seasonal variations in maternal provisioning of Crepidula fornicata (Gastropoda): fatty acid composition of females, embryos and larvae. PLoS One 2013; 8:e75316. [PMID: 24086505 PMCID: PMC3782457 DOI: 10.1371/journal.pone.0075316] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 08/12/2013] [Indexed: 11/18/2022] Open
Abstract
Recruitment success of marine invertebrate populations not only depends on the number of recruits but also on their quality which affects their survival. In species characterized by a mixed development (encapsulated embryonic development and release of planktotrophic larvae), the offspring quality depends on both maternal provisioning and larval feeding. Here, we investigated potential changes of maternal provisioning over the whole reproductive period in a gastropod with a mixed development: Crepidulafornicata. In its introduction area, C. fornicata reproduces from February to October, which implies that both adults and larvae are exposed to different food availabilities. Maternal provisioning was assessed by measuring the fatty acid (FA) composition of females, encapsulated embryos and larvae, in February, May, July and September 2009. FA are essential resources for the development of embryos and larvae, and are key biomarkers of offspring quality. Our results showed differences in FA composition between muscles, visceral masses, and encapsulated embryos. In particular, FA composition of embryos was similar to that of the visceral mass. Seasonal variations in FA composition were observed: in the middle of the reproductive season (May and July), female tissues and embryos showed a higher proportion of polyunsaturated fatty acids and especially ω3, as compared to the beginning and end of the reproductive season (February and September). This showed that through maternal provisioning the quality of C. fornicata offspring was higher in the middle of the reproductive season. Whether this would result in an increase of recruitment success and juvenile performance would require further investigations.
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Affiliation(s)
- Fanny Leroy
- UPMC Univ Paris 06, UMR 7144, Station Biologique, Roscoff, France
- CNRS, UMR 7144, Station Biologique, Roscoff, France
- * E-mail:
| | - Tarik Meziane
- Muséum National d’Histoire Naturelle, UMR BOREA 7208, Committee for Programme and Coordination 53, Paris, France
| | - Pascal Riera
- UPMC Univ Paris 06, UMR 7144, Station Biologique, Roscoff, France
- CNRS, UMR 7144, Station Biologique, Roscoff, France
| | - Thierry Comtet
- UPMC Univ Paris 06, UMR 7144, Station Biologique, Roscoff, France
- CNRS, UMR 7144, Station Biologique, Roscoff, France
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Mortillaro JM, Rigal F, Rybarczyk H, Bernardes M, Abril G, Meziane T. Particulate organic matter distribution along the lower Amazon River: addressing aquatic ecology concepts using fatty acids. PLoS One 2012; 7:e46141. [PMID: 23029412 PMCID: PMC3460950 DOI: 10.1371/journal.pone.0046141] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 08/29/2012] [Indexed: 11/18/2022] Open
Abstract
One of the greatest challenges in understanding the Amazon basin functioning is to ascertain the role played by floodplains in the organic matter (OM) cycle, crucial for a large spectrum of ecological mechanisms. Fatty acids (FAs) were combined with environmental descriptors and analyzed through multivariate and spatial tools (asymmetric eigenvector maps, AEM and principal coordinates of neighbor matrices, PCNM). This challenge allowed investigating the distribution of suspended particulate organic matter (SPOM), in order to trace its seasonal origin and quality, along a 800 km section of the Amazon river-floodplain system. Statistical analysis confirmed that large amounts of saturated FAs (15:0, 18:0, 24:0, 25:0 and 26:0), an indication of refractory OM, were concomitantly recorded with high pCO2 in rivers, during the high water season (HW). Contrastingly, FAs marker which may be attributed in this ecosystem to aquatic plants (18:2ω6 and 18:3ω3) and cyanobacteria (16:1ω7), were correlated with higher O2, chlorophyll a and pheopigments in floodplains, due to a high primary production during low waters (LW). Decreasing concentrations of unsaturated FAs, that characterize labile OM, were recorded during HW, from upstream to downstream. Furthermore, using PCNM and AEM spatial methods, FAs compositions of SPOM displayed an upstream-downstream gradient during HW, which was attributed to OM retention and the extent of flooded forest in floodplains. Discrimination of OM quality between the Amazon River and floodplains corroborate higher autotrophic production in the latter and transfer of OM to rivers at LW season. Together, these gradients demonstrate the validity of FAs as predictors of spatial and temporal changes in OM quality. These spatial and temporal trends are explained by 1) downstream change in landscape morphology as predicted by the River Continuum Concept; 2) enhanced primary production during LW when the water level decreased and its residence time increased as predicted by the Flood Pulse Concept.
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Affiliation(s)
- Jean-Michel Mortillaro
- UMR-CNRS-IRD-UPMC, BOREA, département milieux et peuplements aquatiques, MNHN, Paris, France.
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Kerambrun E, Le Floch S, Sanchez W, Thomas Guyon H, Meziane T, Henry F, Amara R. Responses of juvenile sea bass, Dicentrarchus labrax, exposed to acute concentrations of crude oil, as assessed by molecular and physiological biomarkers. Chemosphere 2012; 87:692-702. [PMID: 22236592 DOI: 10.1016/j.chemosphere.2011.12.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 05/31/2023]
Abstract
In the present study, juvenile sea bass were exposed for 48 and 96 h to an Arabian light crude oil and their responses were assessed at the molecular and physiological levels. The aim of the study was therefore to assess (i) the short term effects of crude oil exposure by the measurement of several molecular biomarkers, (ii) the consequences of this short term exposure on fish health by using growth and condition indices measured after a decontamination period of 28 and 26 d in seawater. Hydrocarbon petroleum concentrations was monitored during the 96 h experiments and an increase of PAH concentrations were found in fish following both exposure times. An 7-ethoxyresorufin-O-deethylase (EROD) induction was observed after 48 h of exposure, while a significant decrease in the sea bass specific growth rate in length and for the RNA:DNA ratio was observed 28 d after that exposure ceased. The EROD induction doubled after the 96 h exposure, and a significant increase in GST activities was observed. A significant decrease in the specific growth rates, the otolith recent growth, the RNA:DNA ratio and the Fulton's K condition index were then observed in sea bass 26 d after the 96 h exposure to mechanically dispersed crude oil compared to the control. The present study shows that growth and condition indices can prove useful in assessing fish health status following an oil spill. Their complementary analysis with sensitive molecular biomarkers as EROD could improve the determination of oil spill impact on fish populations.
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Kerambrun E, Henry F, Perrichon P, Courcot L, Meziane T, Spilmont N, Amara R. Growth and condition indices of juvenile turbot, Scophthalmus maximus, exposed to contaminated sediments: effects of metallic and organic compounds. Aquat Toxicol 2012; 108:130-140. [PMID: 22265613 DOI: 10.1016/j.aquatox.2011.07.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 07/11/2011] [Accepted: 07/13/2011] [Indexed: 05/31/2023]
Abstract
Since sediments have the potential to form associations with several classes of pollutants, they have been recognized as a possible and significant source of contamination for the benthic environment. Flatfish maintain a close association with sediments for food and cover, and are therefore more likely to be exposed to contaminated sediments, especially in coastal areas (e.g. nursery grounds). The assessment of these potential biological effects involves the use of adapted biomonitoring tools. The main objective of this study was to assess and compare the response of several physiological biomarkers measured on juvenile turbot (Scophthalmus maximus) exposed to contaminated sediments. Sediments were collected from three stations in a harbour in northern France (Boulogne-sur-Mer), in an anthropogenic French estuary (the Seine), and in a reference site (exposed sandy beach of Wimereux). Unexposed lab-reared juvenile turbots were exposed to sediments for 7 and 21 days in laboratory conditions. Sediments were analysed for metals, PAH and PCB contamination. Several fish growth and condition indices were individually analysed in fish according to the chemical contaminant availability in sediment, the metal concentrations in gills and the estimation of PAH metabolites in their bile. Significant decreases in growth rates, morphometric index, RNA:DNA ratio and the lipid storage index, based on the ratio of the quantity of triacylglycerols on sterols (TAG:ST), were observed with increasing level of chemical contamination. This decrease in the fish's physiological status could be related to the significant increase of several metal concentrations in contaminated fish gills and the significant increase of PAH metabolites in bile. In a field situation, such a reduction in growth and energetic status of juvenile fish could dramatically decrease their over-winter survival in contaminated nursery grounds.
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Papina M, Meziane T, van Woesik R. Acclimation effect on fatty acids of the coral Montipora digitata and its symbiotic algae. Comp Biochem Physiol B Biochem Mol Biol 2007; 147:583-9. [PMID: 17553717 DOI: 10.1016/j.cbpb.2007.02.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Revised: 02/25/2007] [Accepted: 02/26/2007] [Indexed: 11/26/2022]
Abstract
Lipids play a key role in thermal and photo-acclimation processes, yet they are often neglected in stress studies. We investigated the influence of different light intensities and an increase of temperature on the fatty acid composition of the coral Montipora digitata and its symbiotic algae (i.e., zooxanthellae). Coral branches were subjected to 3 different light intensities (7, 30 and 95% sea surface photosynthetic active radiation) in filtered seawater for 35 days. Fatty acids as methyl esters were determined using gas chromatography (GC) and verified by GC-mass spectrometry. Different light intensities, but only in combination with increased temperature, significantly affected the fatty acid composition of the coral host and zooxanthellae. Temperature and light intensity increases caused reductions in the proportion of polyunsaturated fatty acids in both the host and symbionts. Most changes occurred in the host coral, which suggests that the host is more susceptible to environmental change than the symbiont, or that the host shields the symbionts from environmental change.
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Affiliation(s)
- M Papina
- Institute of Biology and Soil Sciences, Far Eastern Branch of the Russian Academy of Sciences, 159, Prospect 100-Letiya, Vladivostok, 690041, Russia.
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Philippe F, Meney M, Larrazet F, Ben Abderrazak F, Dibie A, Meziane T, Folliguet T, Delahousse P, Lemoine JF, Laborde F. [Effects of video information in patients undergoing coronary angiography]. Arch Mal Coeur Vaiss 2006; 99:95-101. [PMID: 16555691] [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] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
BACKGROUND informed consent is a fundamental and legal obligation for each interventional cardiologist. The effect of consent form describing risks of invasive procedure on anxiety is controversial. This trial was aimed to assess the added value of video information to the standard informed consent process. METHODS 200 consecutive patients undergoing coronary angiography were enrolled. The first one hundred were assigned to conventional education conducted by the physician (no video group) and the second one hundred had consent obtained in the conventional manner assisted by video information (video group). The outcome variables for this comparison consisted of a standard anxiety score (Spielberger Statement Anxiety Inventory questionnary) plus hemodynamics measurements of heart rate, systolic and diastolic blood pressure obtained at baseline and immediately after written informed consent In addition, before discharge, patients graded the tolerability and satisfaction on a 4-point scale. RESULTS The groups were similar with regard to their baseline characteristics and anxity score (37+23 vs 37+23). Patients who had not had prior experience of catheterization had higher baseline anxiety than those who had prior angiography (45 + 22 vs 31 + 20; p = 0.027). Patients who watched the video were significantly less anxious after informed consent (28 + 21 vs 34 + 22; p = 0.048) and had a significantly lower heart rate (65 + 10 vs 71 + 12; p = 0.03). The benefits of video information were especially prominent in those with higher anxiety scores at baseline (score after 45 + 24 vs 57 + 26; p = 0.046). Tolerability were higher in the video group compared with no video group (98% vs 86%; p = 0.003). Finally, satisfaction of information for informed consent process was higher in video group than in no video group (99% vs 76%; p = 0.001). CONCLUSION a video information decreased anxiety level after written informed consent and improved tolerability and satisfaction scales in patients undergoing coronary angiography. The most likely to benefit from video information are patients with higher anxiety level at baseline. Beneficial effect on informed refusal should be investigated in larger population.
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Affiliation(s)
- F Philippe
- Département de pathologie cardiaque, Institut mutualiste Montsouris, 42 bd Jourdan, 75014 Paris.
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Philippe F, Dibie A, Larrazet F, Meziane T, Folliguet T, Laborde E. [Drug eluting stents: from evidence based medicine to clinical practice]. Ann Cardiol Angeiol (Paris) 2005; 54:201-11. [PMID: 16104621 DOI: 10.1016/j.ancard.2005.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Drug eluting stents have been developed in order to reduce in-stent restenosis observed with a 20 to 40% rate in bare-stents. Neoinitimal smooth muscular cells proliferation have been characterized as the corner stone of in-stent restenosis. Consequently, many anti-mitotic and anti-inflammatory drugs have been evaluated in a new stent generation, so called coated stents or drug eluting stents. Three major components must be considered to evaluate the beneficial effects: the bare-stent, the drug, and the deliverance system, most usually a polymer. For the present, sirolimus eluting stent and paclitaxel eluting stent are available in the market with the european conformity label considering evidence based medicine established in randomized trials. Both stents have been shown to reduce in-stent restenosis incidence to less than 7%. Long-term follow-up still remain expected and would give answers to two safety queries: what is about the incidence of late stent thrombosis, what is about mal-apposition consequences in clinical feature. Utilization of drug eluting stent in clinical practice must considered materials with european conformity and must applied French society of cardiology guidelines restricting implantation to patients who meet high-risk restenosis criteria. Medicoeconomic approach must be considered beneficial at the present only in patients with high restenosis risk. Long-term antiplatelet regimen of aspirin and clopidogrel must be considered to avoid late stent thrombosis.
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Affiliation(s)
- F Philippe
- Département de pathologie cardiaque, institut mutualiste Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
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Philippe F, Meziane T, Larrazet F, Dibie A. [Comparison of the radial and femoral arterial approaches for coronary angioplasty in acute myocardial infarction]. Arch Mal Coeur Vaiss 2004; 97:291-8. [PMID: 15182071] [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] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
AIM As compared to the femoral approach, the use of radial arterial access has been demonstrated to reduce the incidence of access site bleeding complications in staged procedures. The purpose of this study was to evaluate clinical outcomes comparing radial and femoral approaches in the treatment of acute myocardial infarction with emergency angioplasty. METHODS Between September 1999 and December 2002, we prospectively enrolled 162 consecutive patients undergoing primary angioplasty with abciximab (n=127) or rescue angioplasty after thrombolysis failure (n=35) comparing in a non-randomized plan radial (n=87) and femoral (n=75) access. RESULTS Cannulation time (from patient arrival at the catheterization laboratory to the effective placement of arterial sheath) and procedural time was not significantly different in radial and femoral groups (respectively 8.5 +/- 5.2 vs 9.0 +/- 5.8 minutes, p=0.81, and 42 +/- 28 vs 44 +/- 27 min, p=0.74). Nevertheless, time of radiation (23.1 +/- 11 min vs 16.5 +/- 10.9 min; p=0.01) and dose-area product (229 +/- 133 vs 151 +/- 86 Gy.cm2, p=0.01) were significantly higher in the radial group. Angiographic success rate is comparable in both groups. Freedom from ischemic recurrent events at 1-month follow-up occurred in 84 (96%) and 69 (92%) patients in the radial and femoral groups, respectively (p=0.12). There were no major access site bleeding complications in the radial group, as opposed to six (8%) in the femoral group (p=0.01) all requiring transfusions and surgical repair necessary in four. Uncomplicated clinical course occurred in 83 (92%) of patients in the radial group and 65 (85%) in the femoral group (p=0.03). Total hospital length of stay was significantly higher in the femoral group (5.9 +/- 2.1 days vs 3.5 +/- 1.2 days; p=0.009). CONCLUSION In patients with acute myocardial infarction treated with coronary angioplasty, the transradial access is efficacious with fewer major access site complications than transfemoral access. Transradial approach produces a shorter length of stay, as compared to the transfemoral approach although with longer times of radiation and higher dose area-product.
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Affiliation(s)
- F Philippe
- Département de pathologie cardiaque, Institut mutualiste Montsouris, 42, bd Jourdan, 75014 Paris.
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Papina M, Meziane T, van Woesik R. Symbiotic zooxanthellae provide the host-coral Montipora digitata with polyunsaturated fatty acids. Comp Biochem Physiol B Biochem Mol Biol 2003; 135:533-7. [PMID: 12831773 DOI: 10.1016/s1096-4959(03)00118-0] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We compared the fatty acid composition of the host-coral Montipora digitata with the fatty acid composition in the coral's endosymbiotic dinoflagellates (zooxanthellae). Fatty acids as methyl esters were determined using gas chromatography (GC) and verified by GC-mass spectrometry. We found the main difference between the fatty acids in the host and their symbionts were that zooxanthellae supported higher proportions of polyunsaturated fatty acids. The presence of fatty acids specific to dinoflagellates (i.e. 18:4omega3, 22:5omega3 and 22:6omega3) in the host tissue suggests that zooxanthellae provide the coral host not only with saturated fatty acids, but also with diverse polyunsaturated fatty acids.
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Affiliation(s)
- M Papina
- Institute of Biology and Soil, Far Eastern Branch of the Russian Academy of Sciences, 159, Prospect 100-Letiya, 690041, Vladivostok, Russia.
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Larrazet F, Philippe F, Folliguet T, Slama M, Meziane T, Bachet J, Laborde F, Dibie A. [Comparison between radial and femoral approaches in ad hoc coronary angioplasty]. Arch Mal Coeur Vaiss 2003; 96:175-80. [PMID: 12722546] [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] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Between September 1999 and June 2001, 591 patients required ad hoc coronary angioplasty. The authors compared the group of patients in whom the approach of first intent was radial (n = 328, 55%) with those in whom the femoral approach had been used (n = 263), in terms of immediate local (haematoma or thrombosis requiring surgical intervention or transfusion) and general complications (myocardial infarction, cerebrovascular accident), and major adverse cardiovascular events (infarction, angioplasty, bypass and death) at 1 year. The dose of ionising radiation during the procedures was also compared prospectively. The conversion rate from the radial (R) to the humeral or femoral (F) approach was 10%. The angioplasty, stenting, and stenting without dilatation failure rates were identical in the two groups (5% versus 5%, 0.6% versus 1.9%, 3% versus 4%, respectively). The average irradiation time was greater in the R group than in the F group (23 +/- 12 min vs 17 +/- 4 min, p < 0.001) as was the irradiation per surface unit (242 +/- 137 Gy.cm2 vs 185 +/- 117 Gy.cm2, p < 0.001). The immediate complication rate was comparable in the two groups (2.5% in group R vs 3.6% in group F) as was the major adverse cardiovascular event rate at 1 year (13% in both groups). The authors observed the same rate of immediate complications and late adverse cardiac events in patients undergoing coronary angioplasty followed by immediate angioplasty by the radial or femoral approaches with an acceptable conversion rate from the radial to the femoral approach. The procedures by the radial approach seem to be associated with a greater time and dosage of ionising radiation.
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Affiliation(s)
- F Larrazet
- Institut mutualiste Montsouris, département de pathologie cardiaque, 42, bd Jourdan, 75674 Paris.
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