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Erschließung alternativer Proteinquellen zum Fischmehl für Forellenfuttermittel Organic Eprints
Stamer, Andreas.
Futtermittel für die Aquakultur karnivorer Arten, wie Lachse und Forellen, enthalten bis zu 70% Fischmehl, das bei konventionellen Fischfutter aus der zielgerichteten Fangfischerei (Gammelfischerei) für Fischmehl stammt. Futtermittel für die ökologische Aquakultur beinhalten nachhaltig erzeugte Fischmehle aus der Speisefischverarbeitung. Angesichts des Wachstums der ökologischen Aquakultur ist mit einer Verknappung dieses nachhaltig produzierten Fischmehls zu rechnen. Ziel des Projektes war daher die Überprüfung der technischen und wirtschaftlichen Machbarkeit der Herstellung von Insektenmehlen aus Larvenstadien der Fliege Hermetia illucens, als Fischmehlersatz. H. illucens kommt in allen warmen Regionen der Erde, einschließlich des Mittelmeerraums und der...
Tipo: Report Palavras-chave: Aquaculture; Feeding and growth.
Ano: 2005 URL: http://orgprints.org/10376/1/10376%2D04OE020%2Dnaturland%2Dstamer%2D2005%2Daquakultur.pdf
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Erschließung alternativer Proteinquellen zum Fischmehl für Forellenfuttermittel Organic Eprints
Stamer, Andreas.
Futtermittel für die Aquakultur karnivorer Arten, wie Lachse und Forellen, enthalten bis zu 70% Fischmehl, das bei konventionellen Fischfutter aus der zielgerichteten Fangfischerei (Gammelfischerei) für Fischmehl stammt. Futtermittel für die ökologische Aquakultur beinhalten nachhaltig erzeugte Fischmehle aus der Speisefischverarbeitung. Angesichts des Wachstums der ökologischen Aquakultur ist mit einer Verknappung dieses nachhaltig produzierten Fischmehls zu rechnen. Ziel des Projektes war daher die Überprüfung der technischen und wirtschaftlichen Machbarkeit der Herstellung von Insektenmehlen aus Larvenstadien der Fliege Hermetia illucens, als Fischmehlersatz. H. illucens kommt in allen warmen Regionen der Erde, einschließlich des Mittelmeerraums und der...
Tipo: Project description Palavras-chave: Aquaculture; Feeding and growth.
Ano: 2005
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Espèces de thonidés d'intérêt potentiel pour l'aquaculture en Méditerranée ArchiMer
Le Gall, Jean-yves.
Bluefin tuna is particularly concerned in the project of tuna rearing in the Mediterranean sea. However there are no reasons to neglect the other tuna species of the Mediterranean sea which present an interesting material for the development of the research on tuna cultivation.
Tipo: Text Palavras-chave: Thon; Aquaculture; Méditerranée; Tuna; Mariculture; Mediterranea.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00342/45326/44787.pdf
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Estado actual del manatí (Trichechus manatus)en la Ensenada de la Siguanea: Consideraciones para su conservación OceanDocs
Alvarez Alemán, A.
Se estudió la población del manatí antillano (Trichechus manatus) presente en la Ensenada de la Siguanea. Se colectó información acerca de los avistamientos de la especie, tamaño de los grupos, conductas, composición de la dieta y amenazas potenciales. Además se realizó la caracterización de sushábitats principales. Se utilizaron diversas metodologías que incluyeron muestreos en botes, a partir de recorridos y desde estaciones fijas, colecta e identificación de especies vegetales, colecta y análisis de material fecal y entrevistas a pescadores. Se determinó que la zona de estudio presenta un conjunto de características adecuadas para la supervivencia de la especie, como disponibilidad de alimento, temperatura del agua apropiada, fuentes de agua dulce,...
Tipo: Theses and Dissertations Palavras-chave: Habitat selection; Conservation; Aquaculture.
Ano: 2010 URL: http://hdl.handle.net/1834/5697
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ESTIMATED COSTS AND RETURNS FOR CATFISH FARMS WITH RECIRCULATING PONDS ALONG THE UPPER TEXAS COAST AgEcon
Lambregts, Johannes Adrianus; Griffin, Wade L.; Lacewell, Ronald D.; Davis, James T.; Clary, Gregory M..
Cost, returns, and economies of scale for small, medium and large catfish farms with recirculating ponds are presented for the upper Texas coast. Internal rates of return are 0.150, 0.183 and 0.219, respectively. Total investment is higher than farms with static ponds but investment per unit production capacity is 7 percent to 16 percent lower. Average total cost per pound is between $0.565 and $0.541, (11 percent –20 percent lower than farms using current technology). These results have implications for regional comparative advantage of catfish production as well as incentive for adoption of new technology in conventional ponds.
Tipo: Journal Article Palavras-chave: Aquaculture; Catfish; Economics; Off-flavor; Livestock Production/Industries.
Ano: 1993 URL: http://purl.umn.edu/15045
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Estimation du polymorphisme enzymatique d'une population de Penaeus jap nicus maintenue en élevage depuis quatre générations ArchiMer
Laubier, A; Pasteur, N; Moriyasu, M.
The polymorphism of 37 enzyme-encoding genes was investigated in a Penaeus japonicus population born the same night from a stock maintained artificially four generations. Five loci were found to be polymorphie (Lap-4, Es-3, Es-6, Es-8 and Mpi-2), and genotype frequencies at four of these loci indicate: a) that the shrimps studied come from the same two parents and b) that Mpi-2 and Es-3 genes are autosomal. The rate of polymorphism observed in this Penaeus japonicus population is similar to that described in natural populations of other Peneidae species, despite the probable occurrence of inbreeding.
Tipo: Text Palavras-chave: Penaeus japonicus; Aquaculture; Génétique; Allozym; Penaeus japonicus; Aquaculture; Genetics; Allozymes.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/00113/22443/20130.pdf
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Estimation of physical and physiological performances of blacklip pearl oyster larvae in view of DEB modeling and recruitment assessment ArchiMer
Sangare, Nathanael; Lo-yat, Alain; Le Moullac, Gilles; Pecquerie, Laure; Thomas, Yoann; Beliaeff, Benoit; Andrefouet, Serge.
In French Polynesia black pearl farming represents one of the dominant business sectors. However, it still entirely relies on unpredictable Pinctada margaritifera spat collection success, which is itself conditioned by larval development completion. To assess the relationship between larval development and recruitment success, we studied under controlled conditions the effect of food concentration on development, growth, ingestion rate, survival and metabolic rate at the larval stage. Larvae were exposed to four different phytoplankton densities (2,5; 7,5; 15 and 30 cell.μL−1). Larvae survived equally all over the range of phytoplankton concentration with an average survival rate of 16% at the end of experiments. Food concentration significantly affected...
Tipo: Text Palavras-chave: Bivalve larvae; Pinctada margaritifera; Physiology; Energetics; Dynamic energy budget theory; Pearl farming; Aquaculture.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00476/58795/61446.pdf
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Etat d'avancement des travaux sur les poissons tropicaux en Martinique ArchiMer
Soletchnik, Patrick; Thouard, Emmanuel; Galllet De Saint-aurin, D.; Suquet, Marc; Hurtaud, P.; Mesdouze, J. P..
Ce document se compose de 3 publications : - overview of the studies conducted on the finfish, Palometa (Trachinotus goodei), in Martinique, - spawning of palometa (Trachinotus goodei), in capacity, - spawning of yellowtail snapper (Ocyurus chrysurus ; Bloch, 1791) in capacity. Cette dernière publication, résume l'essentiel des informations obtenues sur la sarde et présentées d'une façon exhaustive dans le document scientifique n°9. Les 2 premières publications de ce document, consacrées à la carangue, font état des derniers résultats acquis sur cette espèce.
Tipo: Text Palavras-chave: Aquaculture; Poissons tropicaux; Elevage; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique; Aquaculture; Tropical finfishs; Rearing; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00131/24262/22258.pdf
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Etat sanitaire et environnement ArchiMer
Morand, M.
This paper presents the different sanitary risks in fish farming and their therapeutic solutions, including the law factors and the environmental aspects.
Tipo: Text Palavras-chave: France; Disease control; Therapy; Aquaculture.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-1337.pdf
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Etude comparative de la qualité du milieu de bassins aquacoles de crevettes et palourdes chez des éleveurs du marais Breton (Vendée, Loire Atlantique) ArchiMer
Gautier, Dominique.
Une étude du milieu de cinq bassins d'élevage a été menée du point de vue de la qualité de l'eau (température, salinité, oxygène dissous, pH, chlorophylle A, nutriments) et de la qualité du sédiment (matière organique, carbonate de calcium, épaisseur de vase organique, macrofaune dominante). La salinité, contrairement à la température, est fonction de la fréquence et du mode de renouvellement. Les variations nocturnes du pH de l'eau sont en relation avec celles de l'oxygène dissous qui sont elles-mêmes fonction de la concentration en chlorophylle a. La fluctuation du pH de la colonne d'eau differe selon les bassins. Elle peut être stable (autour de 8,1) ou très variable (entre 7,6 et 8,6), sans être toujours en relation avec la concentration en...
Tipo: Text Palavras-chave: Aquaculture; Marais salés; Penaeus japonicus; Ruditapes philippinarum; Qualité du milieu; Sédiment.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/00425/53644/54481.pdf
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Etude comparative du développement des larves de poissons élevées en conditions intensives et semi-extensives : Ontogénèse et performances zootechniques OceanDocs
Zouiten El Abed, D..
Le développement de l’aquaculture repose avant tout sur l’approvisionnement en specimens à élever mais pour la majorité des espèces, le recrutement naturel est insuffisant pour constituer une base d’élevages à grandes échelles. La production aquacole tunisienne est essentiellement piscicole et l’élevage extensif dans les barrages y contribue de façon importante. L'élevage des larves de poissons constitue une étape incontournable pour la production d’alevins destinés à la pisciculture et aux efforts de repeuplement des lacs de barrages et lagunes côtières tunisiennes. Dans cette thèse, des élevages larvaires expérimentaux en mésocosme ainsi que des études comparatives entre les larves élevées avec les techniques intensives et semi-extensives ont été...
Tipo: Theses and Dissertations Palavras-chave: Larval development; Rearing; Ontogeny; Aquaculture; Mesocosms.
Ano: 2012 URL: http://hdl.handle.net/1834/5529
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Etude de la production de juvéniles de saumon atlantique (Salmo salar). II - Influence de la densité sur l'alevinage. Campagne 1980-1981 Pisciculture du Quinquis ArchiMer
Gaignon, Jean-louis; Prouzet, Patrick.
Les résultats de la campagne 1979-1980 ont montré la nécessité d'améliorer les performances de l'alevinage pour obtenir des résultats de production intéressants en cycle ouvert dans les conditions bretonnes. En effet, une augmentation du taux de smoltification à un an ne semble pouvoir être obtenue dans des conditions économiquement intéressantes (Charge très supérieure à 2 kg/m2), qu'à condition que la taille des tacons soit au moins égale à 6-7 cm en septembre de la première année. En conséquence, l'objectif expérimental de la saison 1980-1981 est de déterminer les conditions d'élevage qui puissent permettre d'obtenir un population homogène ayant une bonne croissance c'est-à-dire très supérieure à celle obtenue en 79-80....
Tipo: Text Palavras-chave: Aquaculture; Pisciculture; Production; Juvéniles; Salmo salar; Densité.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00143/25381/23519.pdf
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Etude d'impact du rejet d'eau souterraine de la Station aqualive à Noirmoutier ArchiMer
Manaud, Francois.
La station "AQUALIVE" dans l'île de Noirmoutier doit utiliser dans un avenir proche des eaux souterraines riches en sels nutritifs à un débit de 300 m3/h. Un rejet a été constitué à l'aide du pompage expérimental reproduisant les conditions d'exploitation maximale prévues. Aucun effet certain n'a pu être observé sur l'eau de remplissage des claires (entre 1h avant et 1h après la pleine mer), ni d'effet cumulatif sur une période de 1 an.
Tipo: Text Palavras-chave: Sels nutritifs; Marais maritime; Rejet; Impact; Eau souterraine; Aquaculture.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00104/21564/19144.pdf
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Evolution divergente de cultures phytoplanctoniques marines en relation avec la qualité des enrichissements ArchiMer
Divanach, P.; Sube, J..
Four marine phytoplanctonic cultures from natural inoculum of Nannodito sp. have been submitted to different fertilizers in identical light and tem­perature conditions. The composition of enrichments has been studied to introduce Nitrogen as comparative factor. One tank without nutrients and three enriched cultures, the first only with sodium nitrate, the second with "Conway medium" and the last in which nutri­ents were provided by convenient dilution of "foam", have been followed for phy­sical, chemical, biological parameters during three months. Temperature, pH, dis­solved oxygen, optical density, particulate matters, Organic Carbon, Nitrogen, Phos phorus, Calcium, Magnesium, Sodium, Potassium, metal traces and biological parame­ters were analysed...
Tipo: Text Palavras-chave: Enrichissements; Recyclage; Écume; Phytoplancton; Déchets; Aquaculture; Enrichments; Recycling; Foam; Phytoplankton; Wastes; Aquaculture.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41662/42780.pdf
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Expériences 97 sur l'influence des sédiments du bassin d'élevage sur la physiologie de Penaeus stylirostris ArchiMer
Cochard, Jean-claude.
Les crevettes pénéides maintenues captives dans des cages posées sur le fond des bassins d'élevage subissent un stress dû au sédiment qui peut être évalué par la comparaison entre la valeur de la pression osmotique de leur hémolymphe et celle des crevettes libres du même bassin. Les objectifs des travaux réalisés à la station de Saint-Vincent (SASV, Nouvelle Calédonie) étaient de confirmer la variabilité spatiale de l'intensité du stress et de rechercher dans les sédiments un indicateur physique ou chimique corrélé à ce stress. Des lots de 25 à 30 crevettes de 13,2g, pêchées à l'épervier, ont été placés dans des cages de grillage métallique déposées en 12 points du bassin d'élevage. Les cages ont été relevées au bout de 24 heures et la pression osmotique...
Tipo: Text Palavras-chave: Penaeus stylirostris; Capacité osmorégulatrice; Stress; Sédiment; Aquaculture; Crustacés. crevettes pénéides; PH.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00131/24265/22263.pdf
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Externalities, Thresholds and the Marketing of New Aquacultural Products: Theory and Examples AgEcon
Tisdell, Clement A..
Tipo: Working or Discussion Paper Palavras-chave: Aquaculture; Market development; Market externalities; Livestock Production/Industries; Marketing.
Ano: 2001 URL: http://purl.umn.edu/90468
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FACTORS INFLUENCING TECHNOLOGY ADOPTION IN A LOUISIANA AQUACULTURE SYSTEM AgEcon
Caffey, Rex H.; Kazmierczak, Richard F., Jr..
A multinomial logit model was estimated and used to analyze the impact of various producer characteristics on the adoption of flow-through and recirculating technology in soft-shelled crab production. Because of the industry's geographic isolation and high turnover rate, data was collected by personal interviews in 1991. The results suggest that increased adoption might be fostered by targeting education programs towards full time, family operated businesses in nontraditional production regions. However, development of effective education programs may be hindered by the lack of a significant relationship between producer adoption decisions and the information provided by university or extension personnel.
Tipo: Journal Article Palavras-chave: Technology adoption; Aquaculture; Multinomial logit; Livestock Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/15413
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Farmer monitoring reveals the effect of tidal height on mortality risk of oysters during a herpesvirus outbreak ArchiMer
Pernet, Fabrice; Gachelin, Sonia; Stanisière, Jean-yves; Petton, Bruno; Fleury, Elodie; Mazurié, Joseph.
The intertidal zone is characterized by a sharp vertical gradient of environmental stress, which structures species distribution and their interactions. Few studies, however, have examined the influence of tidal height on host–pathogen interactions. Here, we investigated how the tidal height influence outbreak of the Ostreid herpesvirus type 1 (OsHV-1) affecting the Pacific oyster. A volunteer network composed of 20 oyster growers monitored the survival of 28 batches of oysters during an epizootic event in Southern Brittany, France. Oysters were spat from wild collection or hatchery production. The sampling sites were spread over a 150-km2 area with a tidal height ranging from 0.98 to 2.90 m. Concomitantly, we followed survival of oyster spats in relation...
Tipo: Text Palavras-chave: Aquaculture; Citizen science; Marine epidemiology and health; OsHV-1; Risk analysis.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60271/63981.pdf
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Farming Fish in a Transitional Economy: A Case for East Timor AgEcon
Wood, Toby Ryan; Chan-Halbrendt, Catherine.
This case study evaluates the economic potential for a grow-out mariculture enterprise in East Timor while highlighting how such a business venture could help engage a transitional nation in foreign trade, increase employment opportunities and encourage community based projects that promote sustainable resource use.
Tipo: Journal Article Palavras-chave: Aquaculture; Mariculture; Grouper; East Timor; Transitional economy; Agricultural and Food Policy; Q10; Q22.
Ano: 2008 URL: http://purl.umn.edu/53741
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Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis) Arq. Bras. Med. Vet. Zootec.
Pontes,C. S.; Marques,L. C.; Andreatta,E. R.; Moura,R. S. T.; Henry-Silva,G. G..
ABSTRACTIt is generally believed that increasing feeding frequency has immediate benefits, including reduced nutrient leaching and increased shrimp growth. In this context, the aim this work was to evaluate the effect of feeding frequency in growth performance of Farfantepenaeus paulensis. Juveniles of Farfantepenaeus paulensis were grown for 30 days in pen enclosures, at a stocking density of 5 shrimp/m2. The shrimp were fed on feeding trays at a rate of 8% of their biomass per day, with treatments of one, two, three and four times per day, with four replicates each. The results showed no differences (5% probability) in biomass gain of F. paulensis when feed was offered two, three or four times per day. However, it was observed that the once a day...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding frequency; Shrimp culture; Aquaculture.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000501415
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