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| Registros recuperados: 41 | |
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| Mathieu-resuge, Margaux; Le Grand, Fabienne; Schaal, Gauthier; Kraffe, Edouard; Lorrain, Anne; Letourneur, Yves; Lemonnier, Hugues; Benoît, Julie; Hochard, Sébastien. |
| Deposit-feeding sea cucumbers are efficient nutrient recyclers and have the potential to contribute to the limitation of organic matter load in polyculture or integrated aquaculture systems. Assessing how they assimilate organic matter originating from other farmed species is therefore important for the development of such multi-species farming systems. Here, a coupled stable isotope − fatty acid approach was used to characterize the assimilation of organic matter from shrimp (Penaeus stylirostris) farming by Holothuria scabra in an experimental culture system. H. scabra were reared in mesocosms on shrimp farming-originating sediment with and without additional food sources (maize and fish meals). Although fatty acid results did indicate that... |
| Tipo: Text |
Palavras-chave: Fatty acids; Stable isotopes; Rotational co-culture; Shrimp-farming; Holothurid. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73589/73023.pdf |
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| Mugnier, Chantal; Justou, Carole; Lemonnier, Hugues; Patrois, Jacques; Ansquer, Dominique; Goarant, Cyrille; Le Coz, Jean-rene. |
| Shrimp aquaculture in New Caledonia is subject to seasonal mortalities during grow-out due to highly virulent Vibrio nigripulchritudo (Vn). To understand the mechanisms affecting shrimp resistance and leading to significant mortality, a shrimp ecophysiology and immunology survey was conducted on two farms, the first considered as a "control" farm (HC), the second affected by the disease (DF). Mortality observed during the survey at DF started 50 days after stocking and was typical of this disease. The main observations regarding shrimp were: (a) growth was not affected by the disease and was faster in the DF than in the HC pond; (b) disease did not affect one sex more than the other, or a specific part of the population in terms of weight; (c) the physical... |
| Tipo: Text |
Palavras-chave: Vibriosis; Penaeid shrimp; Field survey; Physiology; Immunology; Nutritional status. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00176/28764/27567.pdf |
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| Lemonnier, Hugues. |
| En 1996, le vieillissement des fonds de bassins aquacoles de crevettes était présenté comme hypothèse explicative de la dégradation des rendements de production sur certains sites d’élevage. Un travail conséquent avait été réalisé à l’époque dont l'objectif était, à partir d'un inventaire des différents sédiments des fermes aquacoles du Territoire, de mettre en évidence une éventuelle évolution de ce sédiment au fil des cycles d'élevage et son influence sur la productivité. L’objet de ce document est de numériser et de compiler les différentes fiches techniques diffusées à l’époque sous forme papier aux aquaculteurs de la filière crevette de Nouvelle-Calédonie. |
| Tipo: Text |
Palavras-chave: Aquaculture; Litopenaeus stylirostris; Durabilité; Sédiment; Envasement; Matière organique; PH; Déchets. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76762/77918.pdf |
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| Lemonnier, Hugues; Brizard, Raphael. |
| Le but de celle fiche biotechnique est de présenter l'ensemble des données concernant l'étude de la caractérisation des sédiments aquacoles. Ce travail! a été mené pendant l'année 1996 et a abouti à un inventaire des sédiments sur l 'ensemble des sites de production du Territoire. Il s'agit d'un premier rapport descriptif permettant une première présentation des principaux résultats aux producteurs du Territoire, un second rapport comprenant les interprétations et les conclusions est actuellement en cours de rédaction. |
| Tipo: Text |
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| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00274/38545/37066.pdf |
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| Mugnier, Chantal; Zipper, Etienne; Goarant, Cyrille; Lemonnier, Hugues. |
| The effect of ambient ammonia, hypoxia and combination of both on survival and the physiological and immunological response of the blue shrimp Litopenaeus stylirostris in relation to molt stage was studied. Shrimp were submitted to 44.0-71.5 mg 1(-1) total ammonia-N corresponding to 2.0 mg 1(-1) unionized ammonia NH3-N and/or to 1.5 mg O-2 1(-1) (4.3 kPa) for 24 hours. Survival was recorded and the molt stages of both dead and surviving shrimp determined. Only shrimp in intermolt and premolt stages were sampled for analysis of haemolymph. Haemolymph was assayed for osmoregulatory capacity (OC), magnesium ion (Mg2+), calcium ion (Ca2+), total proteins, oxyhaemocyanin, lactate, glucose and total haemocyte count (THC). Low mortalities were recorded for... |
| Tipo: Text |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4092.pdf |
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| Beliaeff, Benoit; Chim, Liet; Della Patrona, Luc; Goyard, Emmanuel; Herlin, Jose; Labreuche, Yannick; Walling, Emilie; Ansquer, Dominique; Brun, Pierre; Castex, Mathieu; Coatanea, Denis; Courties, Claude; De Lorgeril, Julien; Dufour, Robert; Frappier, Julie; Goarant, Cyrille; Huber, Matthias; Lemaire, Pierrette; Lemonnier, Hugues; Loubersac, Lionel; Le Roux, Frederique; Lucas, Ronan; Patrois, Jacques; Peignon, Jean-marie; Pham, Dominique; Ramage, Yannick; Soulard, Benoit; Vic, Marlene; Vourey, Elodie; Wabete, Nelly. |
| New Caledonian shrimp farming feasibility studies started in the mid-seventies. Today ca. 2000 tons of Litopenaeus stylirostris, introduced in 1978, are semi-intensively produced each year. Since fifteen years, production has been impacted by two seasonal vibriosis, the “Summer” syndrome caused by Vibrio nigripulchritudo in relation to pond bottom and water column quality, and the “Winter Syndrome” caused by Vibrio penaeicida in relation to drastic temperature drops . With the ambition of elucidating processes possibly leading to mortality outbreaks in ponds, Ifremer has been conducting a research program since 2003 under the DESANS project (2003-2006) and the present DEDUCTION project, equally funded by the South and North Provinces and by the Government... |
| Tipo: Text |
Palavras-chave: Shrimp farming; Technical and scientific support; Vibriosis; Water quality; Pathology; Ecophysiology; Genetics; Zoosanitary monitoring and procedures; Multifactorial and multidisciplinary approach. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00143/25438/23591.pdf |
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| Desclaux, Terence; Hubert, Clarisse; Le Tesson, Eric; Lemonnier, Hugues; Petton, Sebastien; Royer, Florence; Soulard, Benoit; Schohn, Thomas; Le Gendre, Romain. |
| Dans l’objectif de mieux caractériser le devenir en mer des apports terrigènes autour de la ville de Nouméa, Nouvelle-Calédonie, notamment suite au passage de dépressions et cyclones tropicaux, différents réseaux d’observation routiniers (GOPS, Météo-France, DAVAR) ont été complétés par l’installation d’instruments au niveau des exutoires marins de la Dumbéa et la Coulée, et par la réalisation répétée de profils hydrologiques (CTD) sur la zone côtière d’intérêt. L’objectif de ce rapport est de restituer et commenter les observations collectées. Le contexte météo-océanique et les observations réalisées sont d’abord exposés sur l’ensemble de la période étudiée, qui court du 1er décembre 2016 au 30 avril 2017. Les conséquences du passage du cyclone Cook sur... |
| Tipo: Text |
Palavras-chave: Apports terrigènes; Lagon; Campagne de mesure; Panache; Rivière; Cyclone; Dépression tropicale; Grand Nouméa; Nouvelle-Calédonie; Physico chimie. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00471/58315/60865.pdf |
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| Lemonnier, Hugues; Royer, Florence; Caradec, Florian; Lopez, Etienne; Hubert, Clarisse; Rabiller, Emilie; Desclaux, Terence; Fernandez, Jean-michel; Andrieux-loyer, Francoise. |
| The gill is the organ by which many toxic metals are taken up by crustaceans. Iron is known to precipitate at its surface, a phenomenon recently observed in some tropical aquaculture ponds. The present study uses a field approach to understand better the environmental conditions and ecological processes involved in this deposit. Because shrimp are exposed to reduced products originating from organic waste accumulated in the sediment, spatial variation in pH, redox potential and concentrations of dissolved metals in pore water were investigated in these ponds. Total organic carbon, acid volatile sulfide and pyrite were also analyzed in the solid phase. Fe2+ in pore waters showed high spatial variability between ponds and within the same pond with... |
| Tipo: Text |
Palavras-chave: Shrimp aquaculture sustainability; Iron deposits; Gills; Sediment acidification; Redox dynamic; Dynamic of metals; Pyrite. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00678/79026/81450.pdf |
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| Lemonnier, Hugues; Lantoine, Francois; Courties, Claude; Guillebault, Delphine; Nezan, Elisabeth; Chomerat, Nicolas; Escoubeyrou, Karine; Galinie, Christian; Blockmans, Bernard; Laugier, Thierry. |
| Tropical shrimp aquaculture systems in New Caledonia regularly face major crises resulting from outbreaks of Vibrio infections. Ponds are highly dynamic and challenging environments and display a wide range of trophic conditions. In farms affected by vibriosis, phytoplankton biomass and composition are highly variable. These conditions may promote the development of harmful algae increasing shrimp susceptibility to bacterial infections. Phytoplankton compartment before and during mortality outbreaks was monitored at a shrimp farm that has been regularly and highly impacted by these diseases. Combining information from flow cytometry, microscopy, pigment and phylogenetic analysis, the presence of Picocyanobacteria, Prasinophyceae and Diatomophyceae were... |
| Tipo: Text |
Palavras-chave: Tropical aquaculture pond; Litopenaeus stylirostris; Vibriosis; Eutrophication; Phytoplankton; Harmful algae. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00343/45411/44986.pdf |
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| Lemonnier, Hugues; Faninoz, Sebastien. |
| An experiment was conducted in six earthen ponds with 20 shrimps m(-2) Litopenaeus stylirostris (Stimpson) during the warm season in New Caledonia to study the dynamics of wastes in relation with water exchange rate (WER). The nitrogen budget was established, taking into account the different forms of nitrogen in the water, sediment, feed and shrimp. Data from a wide range of treatments applied in unreplicated ponds were treated using regression analysis to establish the relationship between WER and partial nitrogen budget, sediment characteristics and shrimp performance. To compare effluent quality between treatments during the season, data were analysed using the non-parametric sign test. The water outflow was characterized by a decrease in the... |
| Tipo: Text |
Palavras-chave: New Caledonia; Nitrogen; Water exchange; Shrimp; Sediment quality; Effluent. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1811.pdf |
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| Trung Cong, Luong; Lemonnier, Hugues; Hochard, Sebastien; Royer, Florence; Letourneur, Yves. |
| This study was conducted to compare the effects of shrimp and rabbitfish in mono- and polyculture stocked at high biomass on production and environmental conditions in a mesocosm system. Shrimp (14 g) and/or rabbitfish (19 g) were stocked in four treatments with different density but with the same total biomass (236 g m−2), including shrimp monoculture (SM) (17 shrimp m−2), shrimp–fish polyculture (SF) (11 shrimp and 4 rabbitfish m−2), fish–shrimp polyculture (FS) (6 shrimp and 8 rabbitfish m−2) and fish monoculture (FM) (12 rabbitfish m−2). After 10 weeks of experiment, shrimp survival and biomass were low in the treatments where shrimp were dominant (SM, SF), while rabbitfish survival and biomass were high in all the treatments. Shrimp mortality was... |
| Tipo: Text |
Palavras-chave: Polyculture; Penaeidae; Siganidae; Integrated production; Carrying capacity; Pond ecology. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00355/46606/46468.pdf |
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| Lemonnier, Hugues; Brizard, Raphael. |
| Une expérience a été réalisée en conditions hivernales dans six bassins de terre pour déterminer l'effet des taux de renouvellement sur la production de crevettes Penaeus stylirostris, sur les caractéristiques de l'eau et du sédiment des enceintes d'élevage. Les budgets d'azote ont été établis en prenant en compte les différentes formes azotées dans l'eau, dans le sédiment, dans l'aliment et dans les crevettes. Un épisode de mortalité a été obserVé en cours d'élevage et peut être attribué à une epizootie dénommée "syndrome 93». Ce dernier était concomitant à une phase de croissance phytoplantonique et a été d'autant plus important que la biomasse phytoplanctonique dans le bassin d'élevage était élevée. Bien qu'une dilution importante de la colonne d'eau se... |
| Tipo: Text |
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| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00079/19066/16661.pdf |
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| Lucas, Ronan; Courties, C.; Herbland, Alain; Goulletquer, Philippe; Marteau, Anne-laure; Lemonnier, Hugues. |
| In tropical shrimp ponds, the increasing of feed input, concomitantly with the stocking shrimp biomass, induces an eutrophication of the ecosystem. Although difficult to maintain, its stability is required to guarantee the success of the culture. A 110-day period of phytoplankton and bacterioplankton stock and dynamics in an earthen pond (1.2 ha area, 1 m depth) was monitored using flow cytometry to provide baseline information on community characteristics and ecosystem instability. Seven autotrophic cell types were identified over the whole sampling period. Prokaryotic cells included Synechococcus sp., a group named UNK which presented an atypical new flow cytometric signature and picoeukaryotes (PEUK). Nanophytoplankton cells were represented by 4... |
| Tipo: Text |
Palavras-chave: Tropical shrimp aquaculture; Ecosystem shift; Phytoplankton; Bacterioplankton; Vibrio; Flow cytometry. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00029/14068/11312.pdf |
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| Virly, Sabrina; Buisson, Damien; Clough, Barry; Lemonnier, Hugues; Richer De Forges, Bertrand. |
| L’aquaculture de crevettes Litopeneus stylirostris, qui est apparue en 1970 en Nouvelle-Calédonie, est devenue une activité économique importante aujourd’hui avec 17 fermes en production et un tonnage de 2000 tonnes en 2004. Situées sur des zones d’arrière mangrove, les fermes exercent une pression sur l’environnement limitrophe, notamment les mangroves. Le rejet des eaux usées des fermes aquacoles dans le lagon semble constituer le principal impact sur l’environnement côtier. La présente étude qui a été lancée dans le cadre du programme ZoNéCo a pour principal objectif l’évaluation d’éventuels impacts de l’aquaculture sur les mangroves de Nouvelle-Calédonie. Elle s’attache : - d’une part à étudier l’évolution des différentes strates végétales d’une... |
| Tipo: Text |
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| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00198/30913/29284.pdf |
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| Hochard, Sebastien; Ducrocq, Manuel; Lemonnier, Hugues; Royer, Florence; Hubert, Morgane; Michaut, Henri; Verge, Raphael; Letourneur, Yves; Lorrain, Anne; Mathieu-resuge, Margaux; Schaal, Gauthier; Kraffe, Edouard; Legrand, Fabienne; Burgy, Laurent; Kuhn, John; Kuhn, Sandra; Queffelec, Laurent; Millot, Maxime; Le Rohellec, Julien; Benoit, Julie; Vanhuysse, Charles. |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00347/45798/45444.pdf |
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| Registros recuperados: 41 | |
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