Consulta: subjectFacets:"Shrimp farming"
Registros recuperados: 18
Data/hora: 11/06/2024 06:51:40

Removal of heavy metals by exopolymeric substances produced by resistant purple nonsulfur bacteria isolated from contaminated shrimp ponds
Provedor de dados: 69
Autores: Panwichian,Saijai; Kantachote,Duangporn; Wittayaweerasak,Banjong; Mallavarapu,Megharaj.
Two purple nonsulfur bacteria (PNSB) strains, Rhodobium marinum NW16 and Rhodobacter sphaeroides KMS24 were investigated for their potential to remove heavy metals (HMs) from contaminated shrimp pond water. Tolerance of both PNSB strains growing with both microaerobic-light and aerobic-dark conditions, based on their minimum inhibitory concentrations, was in the order of Cu2+ &gt; Zn2+ &gt; Cd2+ (Pb precipitation occurred at 0.34 mM). Results from a scanning electron microscope equipped with an energy dispersive X-ray spectrometer (SEM-EDX) indicated that Cu2+ and Zn2+ altered the cellular morphology of both strains and accumulated HMs were found in their cells. The highest amounts of both cations were found in their cell walls followed by the cytoplasm...
Tipo: Journal article
Palavras-chave: Contamination; Exopolymeric substances; Heavy metals; Photosynthetic bacteria; Shrimp farming.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400002

Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds
Provedor de dados: 69
Autores: Panwichian,Saijai; Kantachote,Duangporn; Wittayaweerasak,Banjong; Mallavarapu,Megharaj.
In order to determine whether waters used for the shrimp cultivation contained toxic levels of heavy metals (HMs) and sodium (Na), analysis was carried out on 31 shrimp ponds in areas of southern Thailand. Purple nonsulfur bacteria (PNB) were also isolated from the same ponds to investigate if they could be used for bioremediation of the above contaminants. The highest HMs concentrations of the sediment samples in mg/kg dry weight were found as follows: 0.75 cadmium (Cd), 62.63 lead (Pb), 34.60 copper (Cu) and 58.50 zinc (Zn). However, all sediment samples met Hong Kong standards for dredged sediment. In contrast, contamination of Cu (9-30 µg/L) and Zn (140-530 µg/L) exceeding the standard guidelines for marine aquatic animal set by the Pollution Control...
Tipo: Journal article
Palavras-chave: Bioremediation; Heavy metals; Purple nonsulfur bacteria; Salinity; Shrimp farming.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400003

DEDUCTION : A research project for shrimp farming sustainability in New-Caledonia
Provedor de dados: 5
Autores: 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

Seasonal Pattern of the Biogeochemical Properties of Mangrove Sediments Receiving Shrimp Farm Effluents (New Caledonia)
Provedor de dados: 5
Autores: Marchand, Cyril; Molnar, N.; Deborde, Jonathan; Della Patrona, Luc; Meziane, Tarik.
Coastal tropical shrimp farming may impact the adjacent ecosystems through the release of large quantities of effluents rich in nutrients. In New Caledonia, mangroves are considered as a natural biofilter to reduce impacts on the surrounding World Heritage listed lagoon. Our main objective was to understand the influence of effluent discharge on the biogeochemistry of mangrove sediments. A monitoring of the physico-chemical parameters of mangrove sediments was carried out during a whole year, including active and non active periods of the farm. The parameters studied were: i) benthic primary production (Chl-a concentrations), ii) physico-chemical parameters of sediments (redox potential, pH, salinity, TOC, TN, TS, δ13C and δ15N), iii) concentrations of...
Tipo: Text
Palavras-chave: Shrimp farming; Effluents; Mangrove; Sediment biogeochemistry; New Caledonia.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00251/36253/34801.pdf

Spatial and temporal extension of eutrophication associated with shrimp farm wastewater discharges in the New Caledonia lagoon
Provedor de dados: 5
Autores: Thomas, Yoann; Courties, Claude; El Helwe, Yasmin; Herbland, Alain; Lemonnier, Hugues.
Shrimp farming in New Caledonia typically uses a flow-through system with water exchange rates as a tool to maintain optimum hydrological and biological parameters for the crop. Moreover, the effluent shows hydrobiological characteristics (minerals, phytoplankton biomass and organic matter) significantly higher than that of the receiving environment. Separate surveys were carried out in a bay (CH Bay) with a medium-size intensive farm (30 ha) (PO) and in a mangrove-lined creek (TE Creek) near a larger semi-intensive farm (133 ha) (SO). Net loads of nitrogen exported from the semi-intensive farm and the intensive farm amounted to 0.68 and 1.36 kg ha(-1) day(-1), respectively. At CH Bay, discharge effects were spatially limited and clearly restricted to...
Tipo: Text
Palavras-chave: Environmental impact; Shrimp farming; Eutrophication; Flow cytometry; New Caledonia.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00014/12527/9882.pdf

Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia)
Provedor de dados: 5
Autores: 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: https://archimer.ifremer.fr/doc/00341/45170/44620.pdf

Influences des parametres physicochimiques sur l’evolution des stades de mues des juveniles de penaeus monodon. cas de la ferme de l’Aqualma Besalampy: Aquaculture et pêche
Provedor de dados: 20
Autores: Mamitiana Fabrice.
La ferme de l’AQUALAMA Besalampy est confrontée à un problème de mue des juvéniles de crevettes Penaeus monodon durant leurs transfert du bassin de pré-grossissement vers les bassins de grossissement. Le pourcentage des crevettes molles dépasse le seuil 10% durant la pêche. On est obligé alors d’arrêter le transfert et de le rapporter à un autre jour. L’arrêt fréquent du programme de transfert perturbe le planning déjà établi par la société. Afin d’essayer de trouver les raisons qui déclenchent spontanément la mue des juvéniles, on a effectué le suivi des paramètres physico-chimique de l’eau (pH, température, salinité, oxygène dissous, profondeur de l’eau, les marées, la gestion d’eau,…) durant l’élevage et durant le transfert. On a constaté alors que le...
Tipo: Theses and Dissertations
Palavras-chave: Juveniles; Physiochemistry; Shrimp farming; Penaeus monodon.
Ano: 2004
URL: http://hdl.handle.net/1834/4994

Impact de la proliferation massive des upogebia dans le canal d'alimentation sur la biosecurite d'une ferme de crevette ( cas de l'aqualma - Besalampy)
Provedor de dados: 20
Autores: PATRICK, Voriasy.
Depuis l’assec du canal d’alimentation en 2004 après le passage du cyclone Gafilo, on a constaté une augmentation massive de la densité d’Upogebia spinimanus au sein de la ferme de l’AQUALMA-Besalampy. En cas d’apparition d’une nouvelle maladie des crustacés, ce phénomène constituerait un grand risque en favorisant sa transmission chez les crevettes élevées, voire les consommateurs. Une nouvelle méthode d’approche installée par le laboratoire centrale de l’AQUALMA s’intéresse sur la prévention des risques de maladie liée à la biosécurité, en même temps des crevettes, des consommateurs et de l’environnement. Par conséquent, durant ce 5 mois de stage, des pratiques sur terrain et en laboratoire au moyen de différentes expériences à noter le suivi...
Tipo: Theses and Dissertations
Palavras-chave: Pathology; Shrimp farming; Penaeus monodon; Biosecurity; Upogebia major.
Ano: 2006
URL: http://hdl.handle.net/1834/4993

Impacto Ambiental de la Granja Camaronera CALISUR sobre los  ecosistemas de la zona costera del golfo de Guacanayabo, Cuba
Provedor de dados: 20
Autores: Isla Molleda, M.; Arencibia Carballo, G.; Capetillo Piñar, N.; Pérez Santos, I. E.
Se exponen los resultados del estudio de impacto  ambiental llevado a cabo durante 3 años en la zona  costera sur central del golfo de Guacanayabo. El  estudio comprende la evaluación de la calidad de  agua y de los sedimentos de las principales fuentes  de abasto de la granja camaronera CALISUR y la  zona costera adyacente. Los valores obtenidos de  los análisis en agua y sedimentos de las áreas de  estudios permitieron dar una valoración del estado  ambiental de las zonas, revelando el no impacto de  la granja camaronera en la zona costera, salvo en el  sistema lagunar Las Playas, ecosistema muy  deteriorado, dadas sus características como receptor  directo de los residuales camaroneros por el sistema  de producción de la granja. Según los datos...
Tipo: Working Paper
Palavras-chave: Environmental impact; Coastal zone management; Shrimp farming.
Ano: 2006
URL: http://hdl.handle.net/1834/4515

Genetic variability of marine shrimp in the Brazilian industry
Provedor de dados: 86
Autores: Maggioni,Rodrigo; Coimbra,Maria Raquel Moura; Costa,Raimundo Bezerra da; Diniz,Fábio Mendonça; Molina,Wagner Franco; Oliveira,Diana Magalhães de; Puchnick-Legat,Angela.
The objective of this work was to estimate the genetic variability level and distribution in Brazilian broodstocks of marine shrimp (Litopenaeus vannamei). Nine of the country's largest hatcheries were evaluated using codominant and highly polymorphic microsatellite markers. The results obtained from genotyping of ten microsatellite loci are indicative of genetic variability that is compatible with that found in wild populations of L. vannamei in Mexico and Central America. A possible explanation is the highly diversified and relatively recent origin of the available broodstocks. Bayesian analysis detected a signal for five founding populations. The distribution of genetic distances partially reflects geographical location, and this information will be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Litopenaeus vannamei; Aquaculture; Microsatellite; Shrimp farming.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800026

A Preliminary Study of the International Marketing of Shrimp
Provedor de dados: 31
Autores: Castellini,   Alessandra; Ragazzoni,   Alessandro; Valentini,   T.
This paper aims to supply a comprehensive account of a particular sector of the fisheries industry.  TH increase of demand for fish products has involved an uncontrolled exploitation of marine reserves and fishing has reached its threshold of biological sustainability.  For these reasons, aquaculture has grown in a corresponding manner in the recent past.  The present survey starts from these considerations and aims to describe the general situation of world-wide, European and Italian aquaculture and then to examine the farming and marketing of a particular kind of product, Penaeus spp., which significantly affects global production in terms of value but not of quantity.
Tipo: Conference Paper or Presentation
Palavras-chave: Aquaculture and Fishery; Shrimp farming; International trade; International Relations/Trade; Livestock Production/Industries; Marketing; Q13; Q17; Q22.
Ano: 2005
URL: http://purl.umn.edu/56077

Production Performance Indicators with Externalities: Environmentally-Adjusted Productivity and Efficiency Indicators of a Sample of Semi-Intensive Shrimp Farms in Mexico
Provedor de dados: 31
Autores: Martinez-Cordero,   Francisco Javier; Leung,   PingSun.
Sustainability in operations is a key consideration when discussing aquaculture’s current and future role in providing food and increasing coastal and rural employment and incomes, among other social benefits.  An important problem from the economics point of view is how the economics point of view is how the externalities generated by aquaculture and those that the industry suffers are internalized.  This paper extends the analysis reported in Martinez-Cordero and leung (2004) for a group of semi-intensive shrimp farms in Mexico.  Modifications to the traditional Total Factor Productivity (TFP) and Technical Efficiency (TE) indicators are carried out in order to incorporate in the evaluation the environmental effects of aquacultural activities.  In a...
Tipo: Conference Paper or Presentation
Palavras-chave: Externalities; Production performance; Shrimp farming; TFP; Efficiency; Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/56006

Growth and survival of pink shrimp (Farfantepenaeus paulensis) postlarve in cages and pen enclosures
Provedor de dados: 63
Autores: Vaz,Luciano Jensen; Wasielesky Jr.,Wilson; Cavalli,Ronaldo Olivera; Peixoto,Silvio; Santos,Marcos Henrique Silva; Ballester,Eduardo.
Technology for the culture of the pink shrimp Farfantepenaeus paulensis in low-cost cages and pen enclosures was developed together with artisanal fishermen of the Patos Lagoon estuary, southern Brazil. Although the production of postlarvae (PL) under laboratory conditions is well documented, survival and growth during the nursery phase cages and pen enclosures in the nature has not yet been analyzed. Therefore, the present study compared survival and growth of F. paulensis postlarvae reared either in cages or pens. Six cages (2.0 ´ 2.0 ´ 1.4 m) of PVC-coated polyester with a mesh size of 1.5 mm were stocked with 800 PL26 each. To assess the effect of the substrate, a 10 cm layer of sand was added to three of these cages to simulate a pen enclosure. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penaeidae; Aquaculture; Shrimp farming; Nursery.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300016

การประยุกต์ใช้เทคโนโลยีภูมิสารสนเทศเพื่อศึกษาการเปลี่ยนแปลงพื้นที่นากุ้งในลุ่มน้ำทะเลสาบสงขลา
Provedor de dados: 106
Autores: Pheraphit Yongchalermchai; Thirada Yongsatitsak; Chao Yongchalermchai.
Tipo: PhysicalObject
Palavras-chave: Shrimp farming; Geographic information; Landsat; พื้นที่นากุ้ง; เทคโนโลยีภูมิสารสนเทศ; ลุ่มน้ำทะเลสาบสงขลา.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5200

Inclusion levels of soluble carbohydrate in the diet for Pacific white shrimp (Litopenaeus vannamei Boone, 1931) - doi: 10.4025/actascianimsci.v33i4.10879
Provedor de dados: 2
Autores: Camboim, Wanessa Queiroz; Universidade Estadual de Santa Cruz; Braga, Luis Gustavo Tavares; Universidade Estadual de Santa Cruz; Ferraz, Neyva Ribeiro; Universidade Estadual de Santa Cruz; Azevedo, Rafael Vieira de; Universidade Estadual de Santa Cruz.
It was evaluated different inclusion levels of carbohydrates (20, 25, 30 and 35%) on the performance of Pacific white shrimp fed isoprotein diets (33% crude protein) and isoenergy (4,700 kcal kg -1) diets in a complete randomized design with four treatments (n = 3). The experiment was performed in a pond with 1,200 m 2 and 1.5 m depth, where food intake, daily weight gain, feed conversion, protein efficiency ratio, and retention rates of crude protein and gross energy and survival rate of shrimp were evaluated. For the different inclusion levels of soluble carbohydrates, there were no differences for feed conversion, and retention rates of crude protein and gross energy and survival rate, resulting in means of 1.22:1, 1.2%, 0.74 and 95.0%, respectively....
Palavras-chave: 5.04.03.00-1 Carcinicultura; Desempenho; Níveis de carboidratos; Nutrição levels of carbohydrates; Nutrition; Performance; Shrimp farming.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10879

The impact of oxygen consumption by the shrimp Litopenaeus vannamei according to body weight, temperature, salinity and stocking density on pond aeration: a simulation - doi: 10.4025/actascibiolsci.v33i2.7018
Provedor de dados: 3
Autores: Vinatea, Luis; UFSC; Muedas, Walter; UFMA; Arantes, Rafael; UFSC.
A simulation was conducted to determinate the impact caused by the combination of Litopenaeus vannamei respiratory rate (mg O2 shrimp-1 h-1), the behavior of SOTR (kg O2 h-1) of mechanical aerators as a function of salinity, as well as the oxygen consumption rate of the pond water and soil (mg O2 L-1 h-1) on the aeration of shrimp ponds (1, 10, 50 and 100 ha) stocked with different densities (10, 40 and 120 shrimp m-2), salinities (1, 13, 25 and 37 ppt), temperatures (20, 25 and 30°C), and shrimp wet weight (5, 10, 15 and 20 g). Results showed that under lower salinity, with larger shrimp, and higher stocking density, higher will be the quantity of required 2-HP aerators to keep dissolved oxygen over 50% saturation. In addition, under low salinity, with 5...
Palavras-chave: Aeration; Shrimp farming; Respiration; Oxygen consumption; Density Aeration; Shrimp farming; Respiration; Oxygen consumption; Density.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7018

Technical efficiency analysis of marine shrimp farming (Litopenaeus vannamei) in biofloc and conventional systems: A case study in northeastern Brazil
Provedor de dados: 42
Autores: REGO,MARCELO A.S.; SABBAG,OMAR J.; SOARES,ROBERTA B.; PEIXOTO,SILVIO.
Abstract Shrimp farming has a great ecological, economic, and social importance in northeastern Brazil. Although the conventional farming system is widely used, biofloc technology (BFT) system has been developed to reduce environmental impacts and optimizing the production. Thus,the present study evaluated the technical efficiency of production cycles of Litopenaeus vannamei in conventional and BFT systems.We analyzed 48 production cycles in the conventional system in 2013 and 2014 and 9 cycles in the BFT system in 2014 through data envelopment analysis (DEA). The inputs corresponded to the population density (post-larvae m-2), amount of feed (kg ha-1 cycle-1), labor (man ha-1) and power supply (HP ha-1), whereas the yield (kg ha-1 cycle-1) was considered...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Data envelopment analysis; Inefficiency; Productive systems; Shrimp farming.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703705

Shrimp farming as an alternative to artisanal fishermen communities: the Case of Patos Lagoon, Brazil
Provedor de dados: 52
Autores: Cavalli,Ronaldo Olivera; Wasielesky Jr,Wilson; Peixoto,Silvio; Poersch,Luís Henrique da Silva; Santos,Marcos Henrique Silva; Soares,Roberta Borda.
The shrimp Farfantepenaeus paulensis is considered a suitable species for culture in the Patos Lagoon estuary, southern Brazil, where its catch has been decreasing in the last few years. Considering the potential of estuarine areas for shrimp farming, the application of low-cost structures to culture shrimp, such as the pen enclosures, is being proposed as an alternative source of income for artisanal fishermen and farmers living near Patos Lagoon. From an economical standpoint, these alternative systems present several advantages over the traditional pond-based culture systems since land, water pumping and artificial aerations are not required, high natural productivity is available and inexpensive materials are employed in the construction of grow-out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shrimp farming; Alternative culture; Pen enclosure; Farfantepenaeus paulensis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500016