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Auteur Przybyla, C.; Fievet, J.; Callier, M.; Blancheton, J.-P.
Titre Effect of dietary water content on European sea bass (Dicentrarchus labrax) growth and disease resistance Type Article scientifique
Année 2014 Publication Revue Abrégée Aquat. Living Resour.
Volume 27 Numéro 2 Pages 73-81
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Auteur Pool, T.K.; Grenouillet, G.; Villeger, S.
Titre Species contribute differently to the taxonomic, functional, and phylogenetic alpha and beta diversity of freshwater fish communities Type Article scientifique
Année 2014 Publication Revue Abrégée Diversity and Distributions
Volume 20 Numéro 11 Pages 1235-1244
Mots-Clés Beta diversity; fish conservation; functional and phylogenetic diversity
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ISSN 1472-4642 ISBN Médium
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Auteur Patino, J.; Weigelt, P.; Guilhaumon, F.; Kreft, H.; Triantis, K.A.; Naranjo-Cigala, A.; Solymos, P.; Vanderpoorten, A.
Titre Differences in species-area relationships among the major lineages of land plants: a macroecological perspective Type Article scientifique
Année 2014 Publication Revue Abrégée Global Ecology and Biogeography
Volume 23 Numéro 11 Pages 1275-1283
Mots-Clés biology; bryophytes; Carrying capacity; cloning; data; Dispersal ability; et-al.; geographical; isolation; long-distance dispersal; maximum-entropy; pteridophytes; range sizes; richness; scale; species-area relationship; species richness; species turnover; spermatophytes; spore-producing plants; universality
Résumé AimAlthough the increase in species richness with increasing area is considered one of the few laws in ecology, the role of environmental and taxon-specific features in shaping species-area relationships (SARs) remains controversial. Using 421 land-plant floras covering continents, continental islands and oceanic islands, we investigate whether variations in SAR parameters can be interpreted in terms of differences among lineages in speciation mode and dispersal capacities (TAXON), or of geological history and geographical isolation between continents and islands (GEO). LocationGlobal. MethodsLinear mixed-effects models describing variation in SARs, depending on the factors GEO and TAXON and controlling for differences between realms (REALM) and biomes (BIOME). ResultsThe best random-effect structure included both random slopes and random intercepts for GEO, TAXON, REALM and BIOME. This accounted for 77% of the total variation in species richness, substantially more than the 27% statistically explained by the model with fixed effects only (i.e. the simple SAR). The slopes of the SARs were higher for oceanic islands than for continental islands and continents, and higher in spermatophytes than in pteridophytes and bryophytes. The intercepts largely exhibited the reverse trend. TAXON was included in best-fit models restricted to oceanic and continental islands, but not continents. Analysing each plant lineage separately, the intercept of GEO was only included in the random structure of spermatophytes. Main conclusionsSAR parameters varied considerably depending on geological history and taxon-specific traits. Such differences in SARs among land plants challenge the neutral theory that the accumulation of species richness on islands is controlled exclusively by extrinsic factors. Taxon-specific differences in SARs were, however, confounded by interactions with geological history and geographical isolation. This highlights the importance of applying integrative frameworks that take both environmental context and taxonomic idiosyncrasies into account in SAR analyses.
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Notes <p>ISI Document Delivery No.: AR6ZU<br/>Times Cited: 2<br/>Cited Reference Count: 59<br/>Patino, Jairo Weigelt, Patrick Guilhaumon, Francois Kreft, Holger Triantis, Kostas A. Naranjo-Cigala, Agustin Solymos, Peter Vanderpoorten, Alain<br/>Belgian Funds for Scientific Research (FNRS) [1.5036.11, 2.4557.11]; University of Liege [C 11/32]; European Union [ES-TAF-2553, SE-TAF-1361, GB-TAF-1801]; DFG Initiative of Excellence via the Free Floater programme at the University of Gottingen<br/>Many thanks are given to Richard Field, David Currie, Silvia C. Aranda, Joaquin Hortal and three referees for their constructive comments on the manuscript. We are particularly grateful to S. Robbert Gradstein for providing unpublished data from Hawaii, Juana M. Gonzalez-Mancebo for making available unpublished data for the Canarian islets, and Martin Turjak for drawings. J.P and A.V. gratefully acknowledge financial support from the Belgian Funds for Scientific Research (FNRS) (grants 1.5036.11 and 2.4557.11) and the University of Liege (grant C 11/32); J.P. also acknowledges support from the European Union's Seventh Framework Programme (FP7/2007-2013) under grant agreement ES-TAF-2553, SE-TAF-1361 and GB-TAF-1801 (SYNTHESYS); P.W and H.K. were funded by the DFG Initiative of Excellence via the Free Floater programme at the University of Gottingen.<br/>Wiley-blackwell<br/>Hoboken</p> Approuvé pas de
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Auteur Nguyen-Kim, H.; Bouvier, T.; Bouvier, C.; Hai, D.N.; Lam, N.N.; Rochelle-Newall, E.; Baudoux, A.C.; Desnues, C.; Reynaud, S.; Ferrier-Pages, C.; Bettarel, Y.
Titre High occurrence of viruses in the mucus layer of scleractinian corals Type Article scientifique
Année 2014 Publication Revue Abrégée Environmental Microbiology Reports
Volume 6 Numéro 6 Pages 675-682
Mots-Clés abundance; bacteria; communities; diversity; ecology; gradient gel-electrophoresis; level physiological profiles; microbial; reef; release; water
Résumé Viruses attract increasing interest from environmental microbiologists seeking to understand their function and role in coral health. However, little is known about their main ecological traits within the coral holobiont. In this study, a quantitative and qualitative characterization of viral and bacterial communities was conducted on the mucus of seven different coral species of the Van Phong Bay (Vietnam). On average, the concentrations of viruses and bacteria were, respectively, 17- and twofold higher in the mucus than in the surrounding water. The examination of bacterial community composition also showed remarkable differences between mucus and water samples. The percentage of active respiring cells was nearly threefold higher in mucus (m=24.8%) than in water (m=8.6%). Interestingly, a positive and highly significant correlation was observed between the proportion of active cells and viral abundance in the mucus, suggesting that the metabolism of the bacterial associates is probably a strong determinant of the distribution of viruses within the coral holobiont. Overall, coral mucus, given its unique physicochemical characteristics and sticking properties, can be regarded as a highly selective biotope for abundant, diversified and specialized symbiotic microbial and viral organisms.
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Notes <p>ISI Document Delivery No.: AU6GU<br/>Times Cited: 1<br/>Cited Reference Count: 51<br/>Nguyen-Kim, Hanh Bouvier, Thierry Bouvier, Corinne Hai Doan-Nhu Lam Nguyen-Ngoc Rochelle-Newall, Emma Baudoux, Anne-Claire Desnues, Christelle Reynaud, Stephanie Ferrier-Pages, Christine Bettarel, Yvan<br/>EC2CO CORINE Project; TOTAL Foundation; French Institute of Research for Development (IRD)<br/>This work was supported by the EC2CO CORINE Project, the TOTAL Foundation and the French Institute of Research for Development (IRD). We thank Telesphore Sime-Ngando, Didier Debroas, Pham The Thu, Chu Van Thuoc, Sonia Monteil and Delphine Bonnet for their participation in the CORINE mission in Vietnam, their assistance in diving, field operations and technical support during the cruise, and Sebastien Villeger for his advice on statistical analysis. We are also very grateful to Michel Galey, Alexandre Portier and all the staff from Whale Island Resort for their hospitality and help during our stay.<br/>Wiley-blackwell<br/>Hoboken</p> Approuvé pas de
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Auteur Morat, F.; Letourneur, Y.; Blamart, D.; Pecheyran, C.; Darnaude, A.M.; Harmelin-Vivien, M.
Titre Offshore-onshore linkages in the larval life history of sole in the Gulf of Lions (NW-Mediterranean) Type Article scientifique
Année 2014 Publication Revue Abrégée Estuarine Coastal and Shelf Science
Volume 149 Numéro Pages 194-202
Mots-Clés age; bristol channel; common sole; fish otoliths; isotope ratios; microchirus-variegatus; nursery grounds; otolith microchemistry; Rhone River; river flood event; sea; seasonal-variation; shape-analysis; Solea solea; stable isotope
Résumé Understanding individual dispersion from offshore natal areas to coastal nurseries during pelagic larval life is especially important for the sustainable management of exploited marine fish species. For several years, the hatching period, the larval life duration, the average growth rate and the otolith chemical composition (delta C-13, delta O-18, Sr:Ca and Ba:Ca) during the larval life were studied for young of the year (YOY) of sole collected in three main nurseries of the Gulf of Lions (GoL) (Thau, Mauguio and Berre). We investigated the spatial variation in the origin of the sole larvae which colonised the nurseries around the GoL, and whether temporal differences in environmental conditions during this life stage affected growth and larval life duration. The hatching period ranges from October to March, depending on year and site. Average ages at metamorphosis varied between 43 and 50 days, with the lowest and highest values consistently found for Mauguio and Berre, respectively. Otolith growth rates ranged between 2.7 and 3.2 mu m d(-1), with the lowest values in Thau and Mauguio and the highest in Berre. Otolith chemical composition during the larval life also varied, suggesting contrasted larval environmental histories in YOY among nurseries. In fishes from Berre and Mauguio, larval life was more influenced by the Rhone River, showing consistently higher larval Ba:Ca ratios (10/23 mu mol mol(-1)) and lower delta C-13 (-6.5/-6.1 parts per thousand) and delta O-18 values (-1.6/0.1 parts per thousand) than for Thau (with Ba:Ca ratios < 8 mu mol mol(-1), delta C-13 similar to-2.3 parts per thousand and delta O-18 similar to 1.5 parts per thousand). Differences in larval otolith composition were observed for 2004, with higher Ba:Ca and lower delta C-13 and delta O-18 values than in the two other years. These differences were explained by changes in composition and chemical signatures of water masses after an exceptional flooding event of the Rhone River in late 2003. (C) 2014 Elsevier Ltd. All rights reserved.
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Notes <p>ISI Document Delivery No.: AW3ZF<br/>Times Cited: 0<br/>Cited Reference Count: 75<br/>Morat, Fabien Letourneur, Yves Blamart, Dominique Pecheyran, Christophe Darnaude, Audrey M. Harmelin-Vivien, Mireille<br/>PACA Region; Total foundation; Agence de l'Eau Rhone Mediterranee Corse; French National Research Agency (ANR) through the young scientist program LAGUNEX [07-JCJC-0135]<br/>Fabien Morat was funded by Ph.D stipends from the PACA Region, the Total foundation, and the Agence de l'Eau Rhone Mediterranee Corse and by the French National Research Agency (ANR) through the young scientist program LAGUNEX (07-JCJC-0135). We thank Jean-Pierre Quignard and fishermen for Thau and Mauguio lagoons samples, and Gipreb members for Berre lagoon samples. The authors express their thanks to Christian Marschal and Chantal Mahe-Bezac for their technical help in age estimation, Olivier Radakovitch for elemental data of the Rhone River waters, and Michael Paul, a native English speaker scientific translator, for language correction. We are grateful to anonymous reviewers for their valuable suggestions and criticisms that have enabled us to improve the article.<br/>Academic press ltd- elsevier science ltd<br/>London</p> Approuvé pas de
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