|
|
|
| Registros recuperados: 55 | |
|
|
| Robert, Rene; Trintignac, P. |
| In mollusc hatcheries and nurseries, live microalgae are traditionally used as feed for bivalves. Despite recent improvements in efficiency, such intensive culture of microalgae represents major cost factors in the production of bivalve larvae and spat. In an attempt to provide cost-effective alternatives and to simplify hatchery-nursery procedures, non-living algal food has been developed over the past few years. Substitution products such as bacteria, yeast, vitamin or docosahexaenoic acid enriched powders, dry and concentrated microalgae and microcapsules have been tested and evaluated on an experimental scale. The present article reviews major research aimed at developing non living diets in mariculture, which generally resulted in lower growth and... |
| Tipo: Text |
Palavras-chave: Mollusc rearing; Artificial feed; Microalgae; Hatchery; Nursery. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00090/20076/17719.pdf |
| |
|
|
| Guinand, Bruno; Durieux, Eric D. H.; Dupuy, Celie; Cerqueira, Frederique; Begout, Marie-laure. |
| Growth-related characters, condition factor, and genetic differentiation were investigated for a single cohort of young-of-the-year (YOY) sole within and among nurseries with differing levels of heavy metals (Cd, Cu and Zn) contamination in the two Charentais Straits, Bay of Biscay, France. Analyses were performed when individuals recruited (May), then after a full summer spent in each nursery (October). Levels of phenotypic and genetic diversity were compared, together with genetic differentiation at a candidate metallothionein (MT) locus and three putatively neutral microsatellite loci. No phenotypic or genetic differentiation was detected among nurseries in May, but significant variation at each phenotypic trait and at the multilocus level in October (P... |
| Tipo: Text |
Palavras-chave: Solea solea; Nursery; Bay of Biscay; Metallothionein. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00033/14392/11694.pdf |
| |
|
|
| Heral, Maurice; Deslous-paoli, Jean-marc; Garnier, Jacqueline; Prioul, Daniel; Heurtebise, Serge; Razet, Daniel. |
| Different types of pregrowth of the Japanese palourde are compared on the some site. The method by upwelling which is the more common used, to have good growth, requires a compromise between the running and the raised biomass. Two periods are critical, in the summer the growth of mollusks is stopped because of a decrease in the phytoplanktonic production ; in the winter, a fall in temperature lessens filtration and stops growth. The results concern clams consummatation rates of particular food (chlorophyll, protids, lipids, glucids) as weIl as the way to supply the decreasing growth : increase of phytoplankyonic production in the summer by recycling waters from nurseries that are loaded with ammoniac and raise winter temperatures by using under-ground... |
| Tipo: Text |
Palavras-chave: Nursery; Growth; Ruditapes philippinarum; Clams; Nurserie; Croissance; Ruditapes philippinarum; Palourdes. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/acte-2951.pdf |
| |
|
|
| Paumier, A.; Tatlian, T.; Reveillac, E.; Le Luherne, Emilie; Ballu, S.; Lepage, M.; Le Pape, Olivier. |
| All around the world, an increasing proportion of estuarine systems are facing massive proliferations of green macroalgae, called green tides, in response to nutrient enrichment. The consequences of this perturbation for ichthyofauna that use estuarine systems as essential fish habitats remain understudied. To estimate these consequences, we combined outputs of both macroalgae proliferation and fish community surveys conducted for the European Water Framework Directive in thirteen estuaries in northwestern France, a region where green tides are of great concern. The approach revealed the influence of green tides on estuarine fish communities. The response of each community to the green tides differed according to their functional guild composition. Benthic... |
| Tipo: Text |
Palavras-chave: Fish community; Estuarine ecology; Green tides; Macroalgae; Nursery. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00465/57704/64188.pdf |
| |
|
|
| Mercader, Manon; Blazy, Christophe; Di Pane, Julien; Devissi, Camille; Mercière, Alexandre; Cheminée, Adrien; Thiriet, Pierre; Pastor, Jérémy; Crec'Hriou, Romain; Verdoit-‐jarraya, Marion; Lenfant, Philippe. |
| Man‐made infrastructures have become ubiquitous components of coastal landscapes, leading to habitat modification that affects the abundance and diversity of marine organisms. Marine coastal fish have a complex life cycle requiring different essential habitats. One of these habitats is known as a nursery, a place where juveniles can settle in large numbers, survive, and grow to contribute to the adult population. Nurseries are mainly found in shallow, sheltered zones and are thus particularly impacted by urbanization, notably by harbors. The vertical featureless structure of docks is very unlikely to be used by juveniles, which need complex habitats to find food and shelter from predators. Recent attempts to rehabilitate the nursery function in such... |
| Tipo: Text |
Palavras-chave: Artificial habitat; Habitat selection; Marine restoration; Nursery; Seascape homogenization; Survival rate. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00488/59952/63446.pdf |
| |
|
|
| Durieux, Eric; Galois, Robert; Begout, Marie-laure; Sasal, Pierre; Lagardere, Francoise. |
| Little attention has been paid to flatfish parasitism as a potential factor of variation in year-class strength. The aim of this study was to evaluate the relationship between parasitic infection and nutritional condition of young-of-year (YOY) common sole. Sole were collected monthly from May (early settlement) to November 2004 in a mussel pole culture area, using a push-net or a trawl, and dissected for parasite identification and counts. Total lipids were extracted from the whole body and lipid classes quantified. Triacylglycerols to sterols (free form) ratio (TAG/ST) was used as an index of nutritional status. Digenean metacercariae infection, characterized by two dominant genera, displayed clear seasonal dynamics and the highest records yet reported... |
| Tipo: Text |
Palavras-chave: Nursery; Metacercariae; Parasitism; Lipid condition; YOY; Sole. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2512.PDF |
| |
|
| |
|
| |
|
| |
|
|
| Morin, Jocelyne; Riou, Philippe; Bessineton, Christophe; Vedieu, Christophe; Lemoine, Michel; Simon, Serge; Le Pape, Olivier. |
| This study, carried out from 1995 to 1997, within the framework of "Le Havre" harbour extension project, concerned halieutic populations and the characterization of a coastal nursery in the oriental part of the Seine bay and the Seine estuary . The main objective was to describe the specific and demographic composition of marine populations and their spatio-temporal distribution, and so assess the biological and halieutic role of this area. This study also included a research about the dietary needs of fish juveniles living in the estuary. Autumn and winter surveys results show that the estuary and area under direct influence are the richest from a biological and halieutic point of view. The mouth estuary isthe richest area in terms of diversity of... |
| Tipo: Text |
Palavras-chave: Bay of Seine; Estuary; Food; Trophic; Juvenile; Nursery; Baie de Seine; Estuaire; Alimentation; Trophique; Juvénile; Nourricerie. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/rapport-1507.pdf |
| |
|
|
| Buestel, Dominique; Cochard, Jean-claude; Dao, Jean-claude; Gerard, Andre. |
| Artificial production from natural spawners could be a way of getting big quantities of spat of Pecten maximus, ln the method described, larval phase (until a size of 250 microns) occurs in a hatchery, post-Iarval phase (from 250 µ until 3 millimeters) in a nursery, and first growth period directly into the sea (from 2 mm to a size of 25-30 mm), The fifst results obtained, production of several thousand of individuals good enough for reseeding, seem to be transposable to a larger scale. |
| Tipo: Text |
Palavras-chave: Restocking; Intermediate culture; Hatchery; Nursery; Pecten maximus; Repeuplement; Prégrossissement; Ecloserie; Nurserie; Pecten maximus. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/publication-6529.pdf |
| |
|
|
| Rochette, S.; Rivot, Etienne; Morin, Jocelyne; Mackinson, S.; Riou, Philippe; Le Pape, Olivier. |
| Estuaries and coastal waters are essential nursery habitats for many marine species, and especially for flatfishes. Thus, investigating how anthropogenic disturbances affect the quality of these habitats is of major importance to understand their consequences on the population renewal of marine species. The aim of the present study was to analyse the effects of estuarine habitat degradation on the population of the common sole in the Eastern Channel, a key species in the fish community and fisheries in this area. We especially focused on the drastic drop in the surface area and on the low water quality of the Seine estuary, the main river of the Eastern Channel. A geographic Information System (GIS) was used to develop quantitative maps of sole nursery... |
| Tipo: Text |
Palavras-chave: Solea solea; Nursery; Habitat Mapping; Anthropogenic Disturbance; Seine Estuary; Recruitment. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00008/11921/9799.pdf |
| |
|
|
| Saulnier, E.; Le Bris, H.; Tableau, Adrien; Dauvin, J.c.; Brind'Amour, Anik. |
| Despite their importance for species conservation and sound management of exploited living resources, the density-dependent mechanisms that regulate wild populations are among the least understood process in ecology. In many marine fish species, there is strong evidence that regulation occurs at the juvenile stage, when individuals concentrate in spatially restricted nurseries. However, little is known about the underlying mechanisms. Whether competition for food resources determines fish growth and survival is particularly controversial. We investigated whether food supply may have limited juvenile fish production (integrating both growth and survival) in a coastal and estuarine nursery in western Europe. Using a recent bioenergetics-based approach, we... |
| Tipo: Text |
Palavras-chave: Food limitation; Nursery; Juvenile fish; Predatory invertebrates; Macrofauna; English channel. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00611/72282/71080.pdf |
| |
|
|
| Bacher, Cedric; Baud, Jean-pierre. |
| Seasonal growth of juvenile oysters (Crassostrea gigas) kept in an intensive upwelling system was studied from 1984 to 1986 in 60 to 90-day growth experiments. Saline ground water was used to produce Skeletonema costatum which was injected as food into the water supplying the upwelling system. Oyster density, water flow, phytoplankton concentration, temperature and frequency of food addition were controlled. Oyster growth was analysed with multidimensional contingency tables and correspondence analysis. The factors, in order of decreasing influence on growth, were temperature, food concentration and oyster density. A rearing strategy was deduced from the growth analysis for summer and winter. In summer, the density of 120,000 oysters/m2, the flow rate of... |
| Tipo: Text |
Palavras-chave: Nursery; Growth; Correspondence analysis; Multidimensional contingency table analysis; Economic efficiency; Skeletonema costatum; Crassotrea gigas; Nourriture; Croissance; Analyse des correspondances; Table de contingence multidimensionnelle; Rentabilité économique; Skeletonema costatum; Crassostrea gigas. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/publication-3061.pdf |
| |
|
| |
|
|
| Burgess, T. Jung, T.I.. |
| During large-scale surveys for soilborne Phytophthora species in forests and semi-natural stands and nurseries in Europe during the last decade, homothallic Phytophthora isolates with paragynous antheridia, semipapillate persistent sporangia and a growth optimum around 25 °C which did not form catenulate hyphal swellings, were recovered from 39 host species in 16 families. Based on their morphological and physiological characters and the similarity of their ITS DNA sequences with P. citricola as designated on GenBank, these isolates were routinely identified as P. citricola. In this study DNA sequence data from the internal transcribed spacer regions (ITS1 and ITS2) and 5.8S gene of the rRNA operon, the mitochondrial cox1 and β-tubulin genes were used in... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Beech; Citricola; Decline; Dieback; Forest; Multivora; Nursery; Oak; Phylogeny. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/532257 |
| |
|
|
| Oliveira,Ronnie E. M. C. C.; Pessanha,André L. M.. |
| A comparative study involving three mesotidal beaches from reflective to estuarine states was conducted between October 2010 and September 2011 in the estuary of Mamanguape River, northeastern Brazil. The aim was to test for differences in fish assemblages along a morphodynamic continuum, particularly the effects of wave action. In total, 3,732 fish from 71 species were examined; Rhinosardinia bahiensisand Atherinella brasiliensisdominated the estuarine beach, whereas Trachinotus carolinus dominated the reflective beach. Fish assemblages were structured by spatial differences among the sites, and overall abundance, richness and biomass demonstrated a clear increasing trend from the reflective to the estuarine beaches, indicating a primary influence of wave... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community descriptors; Juveniles; Nursery; Spatial patterns; Wave action. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100165 |
| |
|
| |
|
|
| de Cerqueira, Pedro Henrique Alcântara; Azevedo, Gileno Brito de; Souza, Anderson Marcos de; Azevedo, Glauce Taís de Oliveira Sousa. |
| Apesar do desenvolvimento técnico e operacional dos viveiros clonais ao longo dos anos, os sistemas de retenção de resíduos e efluentes do processo produziram. O objetivo da pesquisa é avaliar o uso de efluente oriundo de minijardim clonal como adubação em mudas clonais de eucalipto. Foram utilizados os clones AEC 144, GG 100 e VM 01. O experimento foi instalado, o envolvimento de diferentes frequências e lâminas de fertirrigação residual, bem como a utilização da adulação convencional, pelo método de tratamento respiratório, sem uso de Adubação. Para o clone AEC 14, os tratamentos com aplicações diárias de efluente, associados às lâminas de 2 e 3 mm, proporcionaram, em geral, maior qualidade das mudas. Resultado parecido foi observado para o clone VM 01,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Engenharia Florestal; Produção de mudas; Fertirrigação; Viveiro; Efluentes Fertigation; Nursery; Effluents. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/934 |
| |
|
| |
| Registros recuperados: 55 | |
|
|
|
