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| Registros recuperados: 42 | |
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| Veras,Galileu Crovatto; Paixão,Daércio José de Macedo Ribeiro; Brabo,Marcos Ferreira; Soares,Lourdes Marília Oliveira; Sales,Abner Dias. |
| ABSTRACT The objective of this work was to evaluate the influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental fish severum (Heros severus). A completely randomized study was used with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D, 24L:0D) and four replicates, with the aquaria as the experimental unit. Two hundred severum larvae (3.20±0.16 mg and 5.60±0.00 mm) were distributed into 20 aquariums of one litre at a density of 10 larvae per litre. For a period of 15 days, feed was supplied four times daily with Artemia nauplii in a proportion of 160 nauplii/larvae/feeding. At the end of the experimental period, growth, uniformity, and survival data were subjected to analyses of variance and significance.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Circadian rhythm; Hatchery; Live food; Ornamental fish; Severum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000700422 |
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| Breuil, Gilles. |
| The sea bass, Dicentrarchus labrax, has been subjected to intensive aquaculture on the Mediterranean cost for ten years. Marine fish hatcheries are key factors in the aquaculture field, and face different pathologies, especially one of viral origin (nodavirus) that could challenge their feasibility. Consequently, we have tried to provide some data on larvae and spawning stocks. Firstly, we have studied the immunoglobulins, components of the specific humoral immunity, and their role as antibodies. On adult basses, these immunoglobulins are tetrameric molecules with high molecular weight (850 kD), made of heavy (H) - 80 kD and light (L) - 26 kD chains. In the eggs, simplest forms such as monomeric or dimeric are brought to the fore; they are located under... |
| Tipo: Text |
Palavras-chave: Egg; Cytometry; Immunity system; Larvae; Immunoglobulin; Nodavirus; Dicentrarchus labrax; Hatchery; Ontogenese; Cytometrie; Immunoglobuline; Nodavirus; Oeuf; Larve; Nurserie; Dicentrarchus labrax. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/these-1265.pdf |
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| Francois, Cyrille. |
| Aquaculture of penaeid shrimps holds a major place in productions of animals. New Caledonia takes part to these productions by developing the breeding of Pacific blue shrimp Litopenaeus stylirostris. Nowadays, penaeid larviculture can’t be undertaken unless antibiotics are used. Experiments in the Caledonian Aquacultural Laboratory (LAC IFREMER Saint-Vincent) put across to the development of two antibiotic prophylaxis plans for substitution of erythromycine, one plan with oxytetracycline (hydrochloride), the other plan with trimethoprime-sulfadiazine association. After an antimicrobial agent susceptibility testing of bacteria and an acute toxicity study, efficacity assays are the biological validation of these projects of protocols |
| Tipo: Text |
Palavras-chave: Crevette; Ecloserie; Oxytétracycline; Triméthoprime; Sulfadiazine; Shrimp; Hatchery; Oxytetracycline; Trimetroprime; Sulfadiazine. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00072/18312/15877.pdf |
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| Renault, Tristan; Haffner, Philippe; Baudin Laurencien, F.; Breuil, Gilles; Bonami, Jean-robert. |
| Since 1986, an unknown disease causing high mortalities appeared in Ifremer's Pacific OceanologicaI Center (Tahiti) nursery of sea bass (Lates calcarifer). opathology of lesions involving both centraI nervous system (CNS) and eye retina, and the tuation exists in South-East Asian countries (Indonesia, Philippines, Malaysia and Singapore), and in northem Australia. This paper describes the histmorphology of a new fish virus, which is believed to be the aetiological agent of high mortalities among sea bass larvae. |
| Tipo: Text |
Palavras-chave: Virus like; Lates calacrifer; Hatchery; Mortality. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/publication-2885.pdf |
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| Boudry, Pierre; Collet, Bertrand; Cornette, Florence; Hervouet, Veronique; Bonhomme, Francois. |
| Oysters, like many marine species have a very high fecundity. Previous studies have shown that populations, from both hatcheries and the natural environment, have very low Ne/N ratios. These observations reveal high variation in reproductive success. In order to study individual reproductive success under controlled conditions, we used microsatellite markers to quantify parental contributions in in vitro crosses (5 males and 5 females) of Crassostrea gigas, the Pacific oyster. High polymorphism of the microsatellites (more that 50 alleles per locus) eased the parentage identifications. The results of a cross allowing gametic competition were compared with the results from a second cross where the gametes of the same parents were kept separate for each... |
| Tipo: Text |
Palavras-chave: Genetic; Hatchery; Microsatellite markers; Crassostrea gigas; Pacific oysters. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/acte-3457.pdf |
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| Le Luyer, Jeremy; Laporte, Martin; Beacham, Terry D.; Kaukinen, Karia H.; Withler, Ruth E.; Leong, Jong S.; Rondeau, Eric B.; Koop, Ben F.; Bernatchez, Louis. |
| A puzzling question in conservation biology is how to maintain overall fitness of individuals bred in captive environment upon release into the wild, especially for rehabilitating declining or threatened species [1,2]. For salmonid species, a heritable change in fitness related traits and gene expression has been reported to occur in a single generation of captivity in hatchery environment [3–5]. Such rapid changes are congruent with models of inadvertent domestication selection which may lead to maladaptation in the natural environment [4]. Arguably, the underlying mechanism by which captivity may induce fitness difference between wild and captive congeners is still poorly understood. Short- term selection on complex phenotypic traits is expected to... |
| Tipo: Text |
Palavras-chave: Epigenetics; Methylation; Coho salmon; Hatchery; RAD sequencing. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00409/52050/52722.pdf |
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| Signor,Altevir; Signor,Arcangelo Augusto; Boscolo,Wilson Rogério; Reidel,Adilson; Klein,Sidnei; Feiden,Aldi. |
| This study evaluated the periphyton production on artificial substrates considering it as a source of low cost live food for fish. Blades of artificial substrates such as wood, black plastic, acrylic, fiberglass, ceramics and glass (all with 144cm2 blades, 24 for each substrate) were submerged 20.0cm below the water column for 35 days in the winter and 42 days in the summer. The blades were randomly installed in 200m3 pond and evaluated for the biomass production at different phases during the summer and winter. Four blades of each substrate were collected weekly, and the periphytic community was carefully scraped with a spatula and fixed in 4% formaldehyde. The periphytic biomass productivity was evaluated by artificial substrate area and per day. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microorganisms-food; Hatchery; Periphyton; Phytoplankton.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000100072 |
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| Taris, Nicolas; Ernande, Bruno; Mccombie, Helen; Boudry, Pierre. |
| The life histories of oysters in the genus Crassostrea, like those of most marine bivalves, are typified by high fecundity and low survival in nature. Rearing conditions in hatcheries however ensure optimized density, diet, and temperature. Hatcheries are becoming increasingly important for the production of juveniles in aquaculture, and their culture practices often include culling of slow growing larvae to reduce and synchronize the time taken to reach settlement. Because previous studies have found substantial genetic variation for early life developmental traits in Crassostrea gigas, these culling practices are likely to cause highly different selective pressures in hatcheries from those in the natural environment. We studied the phenotypic and genetic... |
| Tipo: Text |
Palavras-chave: Oysters; Larvae; Hatchery; Genetic diversity; Culling; Crassostrea gigas. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1677.pdf |
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| 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 |
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| Taris, Nicolas; Batista, Frederico; Marissal, Eric; Boudry, Pierre. |
| Direct and indirect consequences of selective breeding in marine bivalves still remain largely unexplored. For species with two-phase life cycle, like the Pacific oyster (Crassostrea gigas), most studies have focused on juvenile and adult stages, but relatively few have focused on juvenile and adult stages, but relatively few have considered the larval stage, especially in a domestication context. We assessed the impact of hatchery practices on larval traits, notably on larval growth (due to the culling of slow growing larvae), by the study of larval progenies. Larvae originating from crosses using parental oysters both from natural beds and from hatchery broodstock which had been selected for adult growth and shell shape for seven generations. A set of... |
| Tipo: Text |
Palavras-chave: Inbreeding depresion; Larvae stage; Genetic variability; Hatchery; Domestication; Genetic; Crassostrea gigas; Oyster. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/acte-3337.pdf |
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| Pham, Dominique; Ansquer, Dominique; Chevalier, Anne; Dauga, Clement; Peyramale, Aude; Wabete, Nelly; Labreuche, Yannick. |
| In New Caledonia, shrimp hatcheries are confronted with mass mortality in the larval stages, a phenomenon poorly understood as no specific causative agent has been identified. This has resulted in an excessive use of prophylactic antibiotics, although their adverse effects in aquaculture are notorious. The present work was thus aimed at selecting potential probiotic strains for penaeid hatcheries. From a pool of more than 400 marine bacterial isolates sampled from the local marine environment seven strains exhibited in vitro antagonistic activity towards Vibrio harveyi. These isolates were characterized both phenotypically and genotypically using a biochemical approach and 16S rDNA sequencing. Six out of these seven strains were found to belong to the... |
| Tipo: Text |
Palavras-chave: Shrimp; Litopenaeus stylirostris; Probiotic; Hatchery; Pseudoalteromonas; Immune response. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00190/30129/28591.pdf |
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| 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 |
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| Reynalte-Tataje,David Augusto; Baldisserotto,Bernardo; Zaniboni-Filho,Evoy. |
| Different pH levels of water in the incubation and larviculture of 'curimbatá' (Prochilodus lineatus) were tested to evaluate the effect of this variable on the survival and development of eggs and larvae. During incubation, pH of 5.0, 6.0, 7.0, 8.0, and 8.5 was tested. To observe the effects of pH on larvae with different hatchery histories, the following experimental design was utilised (pH incubation - pH larviculture): L 6-6; L 6-7; L 7-6; L 7-7; L 7-8; L 8-7; L 8-8; L 8.5-7, and L 8.5-8.5. At pH 5.0 and four hours after incubation, an almost total mortality of incubated eggs was seen. Eggs incubated at pH 6.0 to 8.5 had similar fertilization and survival rates at the end of incubation, although eggs and larvae incubated at pH 6.0 had a smaller... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish culture; Fish larval physiology; Fish eggs physiology; Hatchery; Water quality. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100179 |
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| Registros recuperados: 42 | |
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