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A Nematode of the Mid-Atlantic Ridge Hydrothermal Vents Harbors a Possible Symbiotic Relationship ArchiMer
Bellec, Laure; Cambon-bonavita, Marie-anne; Cueff-gauchard, Valerie; Durand, Lucile; Gayet, Nicolas; Zeppilli, Daniela.
Deep-sea hydrothermal vent meiofauna have been the focus of recent research and the discovery of an abundant well-adapted free-living marine nematode on the Mid-Atlantic Ridge offers new perspectives on adaptations to the vent environment. Indeed, knowledge concerning biological interactions of microbes and meiofauna in marine extreme environments is scarce, especially for nematodes. In this study, we used microscopic observations [fluorescence in situ hybridization (FISH) and scanning electron microscopy (SEM)] and metabarcoding of 16S rRNA to characterize the bacterial community of the nematode species Oncholaimus dyvae, an overlooked but ecologically important vent organism. Detection of bacteria in the buccal cavity and on the cuticle (SEM) and...
Tipo: Text Palavras-chave: Sulfur-oxidizing bacteria; Lucky Strike vent field; Meiofauna; Nematode; Endosymbiont.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00457/56846/58676.pdf
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Biodiversity patterns, environmental drivers and indicator species on a High-temperature Hydrothermal edifice, mid-Atlantic ridge ArchiMer
Sarrazin, Jozee; Legendre, Pierre; De Busserolles, Fanny; Fabri, Marie-claire; Guilini, Katja; Ivanenko, Viatcheslav N.; Morineaux, Marie; Vanreusel, Ann; Sarradin, Pierre-marie.
Knowledge on quantitative faunal distribution patterns of hydrothermal communities in slow-spreading vent fields is particularly scarce, despite the importance of these ridges in the global mid-ocean system. This study assessed the composition, abundance and diversity of 12 benthic faunal assemblages from various locations on the Eiffel Tower edifice (Lucky Strike vent field, Mid-Atlantic Ridge) and investigated the role of key environmental conditions (temperature, total dissolved iron (TdFe), sulfide (TdS), copper (TdCu) and pH) on the distribution of macro- and meiofaunal species at small spatial scales (< 1 m). There were differences in macro- and meiofaunal community structure between the different sampling locations, separating the hydrothermal...
Tipo: Text Palavras-chave: Biodiversity patterns; Environmental drivers; Indicator species; Hydrothermal vents; Mid-Atlantic Ridge; Meiofauna; Macrofauna; Lucky Strike.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00266/37713/35731.pdf
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Characteristics of meiofauna in extreme marine ecosystems: a review ArchiMer
Zeppilli, Daniela; Leduc, Daniel; Fontanier, Christophe; Fontaneto, Diego; Fuchs, Sandra; Gooday, Andrew J.; Goineau, Aurelie; Ingels, Jeroen; Ivanenko, Viatcheslav N.; Kristensen, Reinhardt Mobjerg; Neves, Ricardo Cardoso; Sanchez, Nuria; Sandulli, Roberto; Sarrazin, Jozee; Sorensen, Martin V.; Tasiemski, Aurelie; Vanreusel, Ann; Autret, Marine; Bourdonnay, Louis; Claireaux, Marion; Coquille, Valerie; De Wever, Lisa; Rachel, Durand; Marchant, James; Toomey, Lola; Fernandes, David.
Extreme marine environments cover more than 50% of the Earth’s surface and offer many opportunities for investigating the biological responses and adaptations of organisms to stressful life conditions. Extreme marine environments are sometimes associated with ephemeral and unstable ecosystems, but can host abundant, often endemic and well-adapted meiofaunal species. In this review, we present an integrated view of the biodiversity, ecology and physiological responses of marine meiofauna inhabiting several extreme marine environments (mangroves, submarine caves, Polar ecosystems, hypersaline areas, hypoxic/anoxic environments, hydrothermal vents, cold seeps, carcasses/sunken woods, deep-sea canyons, deep hypersaline anoxic basins [DHABs] and hadal zones)....
Tipo: Text Palavras-chave: Extreme environments; Meiofauna; Mangroves; Submarine caves; Polar ecosystems; Melting ice; Hypersaline areas; Anoxic and hypoxic zones; Hydrothermal vents; Cold seeps; Carcasses and sunken woods; Deep sea; Submarine canyons; Deep hypersaline anoxic basins (DHABs); Hadal zones.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00410/52140/52851.pdf
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Colonization of synthetic sponges at the deep-sea Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge): a first insight ArchiMer
Baldrighi, Elisa; Zeppilli, Daniela; Crespin, Rosalie; Chauvaud, Pierre; Pradillon, Florence; Sarrazin, Jozee.
The main objective of the present study was to investigate invertebrate colonization processes at deep-sea hydrothermal vents in response to environmental factors and to the presence of complex artificial substrata (i.e., synthetic sponges). We set out a pilot experiment at 1700 m depth on the Lucky Strike vent field (Eiffel Tower, Mid-Atlantic Ridge). Synthetic sponges were deployed in 2011 at five sites along a gradient of hydrothermal activity and were recovered in 2013, and the composition of macro- and meiofauna was assessed on four of them. The influence of temperature and fluid inputs on colonizer faunal abundance and diversity was analyzed. Faunal abundance and diversity decreased with increasing distance from vent emission. The colonizers were...
Tipo: Text Palavras-chave: Synthetic sponges; Colonization; Lucky Strike; Meiofauna; Macrofauna; Substratum type.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00410/52135/52937.pdf
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Composición, estructura y flujo energético del meiobentos frente a Chile central RChHN
SELLANES,JAVIER; NEIRA,CARLOS; QUIROGA,EDUARDO.
Se estudió la estructura de la meiofauna metazoaria (a nivel de grandes grupos taxonómicos) y su rol en el flujo de energía en el subsistema bentónico frente a Concepción (~3630' S). Las muestras se recolectaron en mayo y noviembre de 1997 y mayo de 1998 en cinco sitios correspondientes a: interior de la Bahía de Concepción (28 m), boca de la bahía (35 m), plataforma interior (64 m), plataforma intermedia (88 m) y plataforma externa (120 m). El periodo de estudio coincidió con el evento El Niño 1997-1998 (EN). El meiobentos resultó ser poco diverso a nivel de grandes grupos, pero con abundancias y biomasas moderadas a altas, en comparación con los valores promedio reportados en la literatura para el sublitoral fangoso. Nematoda fue el grupo dominante, con...
Tipo: Journal article Palavras-chave: Meiofauna; Producción secundaria; Flujo energético; El Niño; Chile central.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000300006
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Composición y abundancia del meiobentos en el sublitoral de la Habana, Cuba OceanDocs
Armenteros Almanza, M..
En las regiones tropicales se han realizado estudios extensos sobre grupos conspicuos como peces, corales y macroalgas, pero existe poca información comparativa sobre la meiofauna (Gourbault et al., 1995). En Cuba se han publicado varios trabajos sobre abundancia y distribución del meiobentos (Herrera y Del Valle, 1980; Herrera y Sánchez, 1982; Jiménez Ibarzábal, 1982; Herrera, 1983; Herrera y Amador, 1983; Lalana-Rueda y Gosselck, 1986; López-Cánovas, 1987), pero en la década pasada la ausencia de estos es notable. En el sublitoral de La Habana se han realizado estudios de varias taxocenosis correspondientes a la megafauna (ejemplos: peces, corales y gorgonias); la complementación de tales estudios y el impacto que se ejerce sobre esta zona...
Tipo: Theses and Dissertations Palavras-chave: Meiofauna; Meiobenthic organisms; Coastal structures.
Ano: 2003 URL: http://hdl.handle.net/1834/5667
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Composition en cires, triglycérides, protéines et sucres du mésozooplancton ArchiMer
Alayse-danet, Anne-marie; Daniel, Jean-yves; Le Coz, Jean-rene.
Analyses effectuées sur le zooplancton total des pêches verticales au WP2 et sur des animaux triés à partir des pêches horizontales (Campagne RCA sur les côtes Atlantiques du Portugal). On ne signale pas de différence significative entre la composition biochimique des populations du large et de la côte
Tipo: Text Palavras-chave: Zooplancton; Milieu marin; Composition chimique; Glucide; Cire animale; Triglycéride; Protéine; Océan Atlantique Nord; Upwelling; Méiofaune; Portugal; France; Zone côtière; Zooplankton; Marine environment; Chemical composition; Carbohydrate; Animal wax; Triglyceride; Proteins; North Atlantic; Upwelling; Meiofauna; Portugal; France; Coastal zone.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/00189/29976/28429.pdf
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Deep-sea habitat heterogeneity influence on meiofaunal communities in the Gulf of Guinea ArchiMer
Van Gaever, Saskia; Galeron, Joelle; Sibuet, Myriam; Vanreusel, Ann.
To estimate the degree of spatial heterogeneity of benthic deep-sea communities, we carried out a multiple-scale (from m's to 200km) investigation in the Congo-Angola margins (Equatorial West African margin, 3150-4800 m) in which we examined the metazoan meiofauna at a variety of habitats along the Congo Channel system and in the associated cold seep. We investigate the structure, density, vertical distribution patterns in the sediment and biomass of meiofaunal communities in the Gulf of Guinea and how they are controlled by hydrologic and biogeochemical processes The meiofaunal. communities in the Gulf of Guinea were shaped by heterogeneous conditions on the margin, and reflect the multiple-scale spatial variability that corresponds with the different...
Tipo: Text Palavras-chave: Gulf of Guinea; Nematodes; Meiofauna; Cold seep; Congo canyon; West equatorial Africa margin deep sea.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7483.pdf
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Diversidad y distribución de la macro- y meiofauna (especialmente nemátodos) en el ecosistema arrecifal de Punta Francés, Cuba OceanDocs
Ruiz Abierno, A.
Se estudió la diversidad y distribución de la macro- y meiofauna y los rasgos funcionales de nemátodos marinos en dos sitios y cuatro hábitats dentro del ecosistema arrecifal de Punta Francés, Isla de La Juventud, Cuba. Los hábitats seleccionados fueron: seibadal, arena, coral muerto y fondo duro, y se muestrearon en dos sitios dentro del arrecife (Punta Francés y Cabezo de Moya) en Junio del 2010. Se identificaron y contaron los organismos de la macro- y meiofauna en las muestras; los nemátodos fueron identificados hasta especie, se calculó su tamaño y biomasa y se clasificaron en grupos tróficos. Los hábitats de coral muerto y fondo duro por su heterogeneidad y cubierta de césped de algas tuvieron macro- y meiofauna más diversa. La...
Tipo: Theses and Dissertations Palavras-chave: Microfauna; Meiofauna; Coral reefs; Ecosystems.
Ano: 2013 URL: http://hdl.handle.net/1834/5484
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Estructura de las comunidades de la meiofauna de la Bahía de Nipe, Cuba OceanDocs
Cuervo, Z.; Armenteros, M.; Capetillo, N.; Arencibia, G.; Pérez, I.; González, G..
The structure of meiofaunal communities was surveyed in 17 stations in Nipe Bay, Cuba in July, 2001. Levels of Nickel (all stations) are higher than in several bays in Cuba, probably due to natural causes. The levels of Copper, Zinc, Fe and Manganese indicate a relative low pollution, likely related to the presence of urban settlements. There is decrease in the total density and number of taxa of meiofauna in the stations with higher levels of metals; the copepods appear to be particularly sensitivity to metal pollution. The stations located at the mouth of the bay have the lowest levels of contamination and the highest total density of organisms and taxa richness, probably due to a more intense turnover of the waters in this area and consequent lower...
Tipo: Proceedings Paper Palavras-chave: Heavy metals; Meiofauna; Meiobenthos; Heavy metals; Meiobenthos.
Ano: 2006 URL: http://hdl.handle.net/1834/2173
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Evolution des caractéristiques chimiques et biologiques des sédiments en circuit clos. II. Effets de la matière organique circulante sur la méiofaune de systèmes polytrophes ArchiMer
Boucher, G..
Chemical and Biological evolution of sediments in closed circuit : II. Effect of soluble organic matter input on meiofauna in poly­trophic systems. The effect on meiofauna of the input of soluble organic matter in clo­sed circuit sand filters was followed during two years for an oligotrophic, a mesotrophic and an eutrophic tank, and during one year for an atrophic tank. In the case of no input, the density, biomass and species richness of nematodes decreases even if equitability remains constant. Oligotrophy main­tains the stability and diversity. Mesotrophy changes the community composition by species succession. Eutrophy allows biomass increase, due to one dominant species.
Tipo: Text Palavras-chave: Circuit clos; Matière organique; Meiofaune; Closed circuit; Organic matter; Meiofauna.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41653/40862.pdf
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Gnathostomulida from the (sub)tropical northwestern Atlantic Naturalis
Sterrer, Wolfgang.
Sterrer, W., 1997. Gnathostomulida from the (sub)tropical northwestern Atlantic. Studies Nat. Hist. Caribbean Region 74, Amsterdam, 1998: 1-178. Based on 1035 specimens of Gnathostomulida from 106 samples collected during the period 1968-1997 in the tropical and subtropical northwestern Atlantic, 45 species are presented, including one new family (Paucidentulidae nov. fam.), two new genera ( Vampyrognathia nov. gen. and Paucidentula nov. gen.), and 13 new species: Haplognathia belizensis, Cosmognathia aquila, Pterognathia alcicornis, P. pygmaea, Mesognatharia eastwardiae, Onychognathia rhombocephala, Vampyrognathia horribilis, V. minor, Paucidentula anonyma, Gnathostomula uncinata, Triplignathia (?) bathycola, Austrognatharia medusifera, and A. stirialis.
Tipo: Article / Letter to the editor Palavras-chave: New species.; Marine; Free-living; Meiofauna; Taxonomy new genera.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/503188
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Is the meiofauna a good indicator for climate change and anthropogenic impacts? ArchiMer
Zeppilli, Daniela; Sarrazin, Jozee; Leduc, Daniel; Arbizu, Pedro Martinez; Fontaneto, Diego; Fontanier, Christophe; Gooday, Andrew J.; Kristensen, Reinhardt Mobjerg; Ivanenko, Viatcheslav N.; Sorensen, Martin V.; Vanreusel, Ann; Thebault, Julien; Mea, Marianna; Allio, Noemie; Andro, Thomas; Arvigo, Alexandre; Castrec, Justine; Danielo, Morgan; Foulon, Valentin; Fumeron, Raphaelle; Hermabessiere, Ludovic; Hulot, Vivien; James, Tristan; Langonne-augen, Roxanne; Le Bot, Tangi; Long, Marc; Mahabror, Dendy; Morel, Quentin; Pantalos, Michael; Pouplard, Etienne; Raimondeau, Laura; Rio-cabello, Antoine; Seite, Sarah; Traisnel, Gwendoline; Urvoy, Kevin; Van Der Stegen, Thomas; Weyand, Mariam; Fernandes, David.
Our planet is changing, and one of the most pressing challenges facing the scientific community revolves around understanding how ecological communities respond to global changes. From coastal to deep-sea ecosystems, ecologists are exploring new areas of research to find model organisms that help predict the future of life on our planet. Among the different categories of organisms, meiofauna offer several advantages for the study of marine benthic ecosystems. This paper reviews the advances in the study of meiofauna with regard to climate change and anthropogenic impacts. Four taxonomic groups are valuable for predicting global changes: foraminifers (especially calcareous forms), nematodes, copepods and ostracods. Environmental variables are fundamental in...
Tipo: Text Palavras-chave: Meiofauna; Climate change; Anthropogenic impacts; Biomonitoring; Natural observations and experimental studies.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00278/38938/37521.pdf
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Meiofauna and sedimentary organic matter off Central Chile: response to changes caused by the 1997-1998 El Nino ArchiMer
Neira, C; Sellanes, J; Soto, A; Gutierrez, D; Gallardo, Va.
Quantitative surveys of metazoan meiofauna were carried out in an upwelling region off Central Chile (36 degreesS). During May 1997 and May 1998, coinciding with the onset and end of Fl Nino, five benthic stations (respectively 27, 34, 64, 88, and 120 m depth), from the middle of Concepcion Bay to the edge of the adjacent continental shelf, were sampled. The sedimentary organic matter biopolymeric fraction (proteins, carbohydrates and lipids) and chloroplastic pigments were also assessed. Total meiofauna abundance and biomass increased significantly between sampling dates at the mid-bay and inner shelf sites, from 1474 +/- 354 to 5035 +/- 291 individuals 10 cm(-2) and from 2618 +/- 332 to 5241 +/- 903 individuals 10 cm(-2), respectively. The relative...
Tipo: Text Palavras-chave: Chili central; El Niño; Méiofaune; Matière organique; Thioploca; Central Chile; El Nino; Meiofauna; Organic matter; Thioploca.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43358/42857.pdf
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Meiofauna assemblages of the Condor Seamount (North-East Atlantic Ocean) and adjacent deep-sea sediments ArchiMer
Zeppilli, Daniela; Bongiorni, Lucia; Cattaneo, Antonio; Danovaro, Roberto; Santos, R.
Seamounts are currently considered hotspots of biodiversity and biomass for macro- and megabenthic taxa, but knowledge of meiofauna is still limited. Studies have revealed the existence of highly diverse meiofauna assemblages; however most data are mainly qualitative or focused only on specific groups, thus preventing comparisons among seamounts and with other deep-sea areas. This study, conducted on Condor Seamount (Azores, North-East Atlantic Ocean), describes variation in abundance, biomass, community structure and biodiversity of benthic meiofauna from five sites located on the Condor Seamount: and one site away from the seamount. While the summit of the seamount hosted the highest alpha biodiversity, the flanks and the bases showed a rich meiofauna...
Tipo: Text Palavras-chave: Condor Seamount; Meiofauna; Biodiversity; Deep-sea sediments; Azores.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00152/26324/24398.pdf
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Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia) ArchiMer
Della Patrona, Luc; Marchand, C.; Hubas, C.; Molnar, N.; Deborde, J.; Meziane, T..
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...
Tipo: Text Palavras-chave: Mangrove; Meiofauna; Shrimp farming; Environmental status; New Caledonia.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00341/45170/44620.pdf
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Modification de l'équilibre démographique de la meiofaune dans les lagunes aménagées de Certes ArchiMer
Castel, J.; Lasserre, P..
Monthly sampling for a 2-year period allowed comparisons between the communities of meiofauna living in fish ponds ("reservoirs a poissons de Certes") and those inhabiting a contiguous tidal pool ("lac de tonne"). Nematods and copepods constitute the bulk of the meiofaunal populations. The community structure of co­pepods is considered in detail.The communities of copepods are clearly separated between the two areas. In terms of abundance, diversity and species persistence, the meiofauna is more stable in the intertidal pool than in the fish ponds. When the seasons are well marked, the community structure of the cope­pods in the fish ponds is nearly equilibrated in spring, with a maximum of diver­sity in May-June. During high eutrophication periods, in...
Tipo: Text Palavras-chave: Lagunes; Diversité; Distribution différentielle; Meiofaune; Copépodes; Bassin d'Arcachon; Lagoons; Diversity; Differential distribution; Meiofauna; Copepods; Arcachon Bay.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00306/41681/40890.pdf
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On the vertical distribution of metazoan meiofauna in shelf break and upper slope habitats of the NE Atlantic OMA
Vanreusel, A.; Vincx, M.; Schram, D.; Van Gansbeke, D..
The metazoan meiofauna of nine stations in shelf break and upper slope areas (70 to 1500 m water depth) of the N.E. Atlantic were investigated in order to assess which environmental factors are important in the control of densities and sediment profiles. Total meiofaunal densities (ranging between 368 and 1523 ind/10 cm<sup>2</sup> were correlated with bacterial densities, an important food source for meiofauna. However, considering sediment vertical distribution profiles, the relative importance of both food and oxygen on the meiofauna became obvious. A combination of both bacterial densities and oxygen supply could explain about 95% of the variability in the vertical profiles of the meiofauna densities. Meiofauna numbers increase in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Meiofauna; Vertical profiles.
Ano: 1995 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7279
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Seasonal dependence on seagrass detritus and trophic niche partitioning in four copepod eco-morphotypes ArchiMer
Mascart, Thibaud; De Troch, Marleen; Remy, François; Michel, Loic; Lepoint, Gilles.
Benthic copepods dominate meiofaunal communities from marine phytodetritus, both in terms of numerical abundance and species diversity. Nevertheless, ecological factors driving copepod co-existence and population dynamics are still largely unknown. Here, we aimed to explore feeding habits of four copepod species commonly found in Mediterranean seagrass detritus accumulations, representing distinct eco-morphotypes (planktonic, phytal, epibenthic and mesopsammic). Joint use of fatty acid and stable isotope trophic markers showed that co-occurring harpacticoid copepods have diversified diets. Contrary to what was expected, microphytobenthos does not serve as their main food source. Instead, we found evidence from both techniques that major food items include...
Tipo: Text Palavras-chave: Macrophytodetritus; Posidonia oceanica; Meiofauna; Stable isotopes; Fatty acids; Isotopic niche; Mixing models; Mediterranean Sea.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55187/60472.pdf
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Stable isotope analysis position of intertidal of food source and trophic nematodes and copepods ArchiMer
Rzeznik Orignac, J; Boucher, G; Fichet, Denis; Richard, P.
Four dominant nematode species and various copepods from an intertidal mudflat in Marennes-Oleron Bay were analyzed for delta C-13 and delta N-15 ratios together with their potential food source, the microphytobenthos. It was shown that microphytobenthic C is passed to nematodes either by grazing or predation on herbivorous meiofauna by other nematodes. Diatoms of different sizes exhibited different C-13 content, which can be reflected in herbivorous meiofauna, such as the nematodes Daptonema oxycerca and Metachromadora remanei and the bulk of copepods, indicating they can select different sizes of diatoms. Results confirm the need to analyze meiofauna feeding habits at the species or genera level since the delta N-15 and delta C-13 signatures differed...
Tipo: Text Palavras-chave: Stable isotopes; Marennes Oleron; Mudflat; Food web; Benthic diatoms; Microphytobenthos; Meiofauna; Copepods; Nematodes.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4292.pdf
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