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| Registros recuperados: 32 | |
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| Dhert, P.; Lim, L.C.; Candreva, P.; Van Duffel, H.; Sorgeloos, P.. |
| There has been rapid development in the marine foodfish larviculture technology in Europe since the early eighties, especially in the flat fish, turbot and halibut, and the bass and bream species. The most significant improvements in the eighties were the introduction of light control, artificial reproduction techniques, appropriate water treatment and the use of rotifers and <i>Artemia</i> nauplii of specific sizes and in the late eighties and early nineties the quality enhancement of live food organisms using specific enrichment techniques. Present research is focused on the implementation of several microbial techniques to improve the hygiene of live prey and fish. Many of the modern larviculture techniques being used in marine foodfish... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish culture; Ornamental fish. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2933 |
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| Pastor, L.. |
| Se presentan los resultados del estudio biológico de cinco especies de peces ornamentales, a los que se les concede un alto valor para su exhibición en los acuarios. Las especies se caracterizaron morfométricamente con mediciones lineales y del peso, relaciones proporcionales y la relación largo-peso; y se estudió la reproducción y la alimentación. La especie Gramma loreto se caracterizó morfométricamente; los individuos maduros resultaron más altos proporcionalmente; predominaron las hembras en la proporción sexual total; la madurez sexual se presentó en la clase de talla de 35-40 mm en las hembras y de 55-60 mm de LH en los machos; en marzo-abril se puede estimar su período reproductivo; los crustáceos, y dentro de ellos los copépodos harpacticoides... |
| Tipo: Theses and Dissertations |
Palavras-chave: Ornamental fish; Tropical fish. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4593 |
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| Pereira, M.A.M.; Whittington, M.; Gonçalves, M.; Costa, A.. |
| The extensive coral reefs along the coastline of Mozambique are a valuable national resource. They provide food and income for a large proportion of the country’s coastal communities and have a great potential for generating substantial economic growth within the tourism sector. The government of Mozambique has recognised the importance of coral reefs and has initiated a number of actions aimed at the sustainable management and conservation of this resource under its National Coral Reef Management Programme (NCRMP). The current two year moratorium on the trade in ornamental fish and live corals is one such initiative and it was important that the opportunity to formulate a framework for the sustainable management of this trade be acted upon quickly. It is... |
| Tipo: Report |
Palavras-chave: Ornamental fish. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/889 |
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| Whittington, M.; Pereira, M.A.M.; Gonçalves, P.M.B.; Costa, A.. |
| Os extensos recifes de coral ao longo da costa de Moçambique constituem um importante recurso nacional. Eles providenciam alimentos e receita para uma grande parte das comunidades costeiras e possuem um elevado potencial para um substancial crescimento económico dentro do sector turístico. O governo de Moçambique reconheceu a importância dos recifes de coral e iniciou um número de acções apontadas para a gestão sustentável e conservação deste recurso no quadro do seu Programa Nacional de Gestão dos Recifes de Coral (PNGRC). A actual moratória de dois anos sobre o comércio de peixe ornamental e coral vivo é uma dessas iniciativas e é importante que a oportunidade de formular um quadro de gestão sustentável deste comércio seja efectuada rapidamente. É em... |
| Tipo: Working Paper |
Palavras-chave: Ornamental fish. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/280 |
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| Oliveira,Sarah Ragonha de; Souza,Rondon Tatsuta Yamane Baptista de; Nunes,Érica da Silva Santiago; Carvalho,Cristiane Suely Melo de; Menezes,Glauber Cruz de; Marcon,Jaydione Luíz; Roubach,Rodrigo; Ono,Eduardo Akifumi; Affonso,Elizabeth Gusmão. |
| Poor water quality condition has been pointed out as one of the major causes for the high mortality of ornamental fishes exported from the state of Amazonas, Brazil. The purpose of the current study was to define water quality standards for cardinal tetra (Paracheirodon axelrodi), by establishing the lower and higher for lethal temperature (LT50), lethal concentration (LC50) for total ammonia and nitrite and LC50 for acid and alkaline pH. According to the findings, cardinal tetra is rather tolerant to high temperature (33.3 ºC), to a wide pH range (acid pH=2.9 and alkaline pH=8.8) and to high total ammonia concentration (23.7 mg/L). However, temperatures below 19.6 ºC and nitrite concentrations above 1.1 mg/L NO2- may compromise fish survival especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 96-h LC50; Ornamental fish; Paracheirodon axelrodi; Water quality. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400023 |
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| Zuanon,Jener Alexandre Sampaio; Salaro,Ana Lúcia; Moraes,Sofia Simões Silveira; Alves,Leandro Moreno de Oliveira; Balbino,Eric Márcio; Araújo,Erick Siqueira. |
| Dietary protein and energy requirements of juvenile freshwater angelfish (Pterophyllum scalare) were evaluated. A 3 × 2 factorial design was used, with three dietary crude protein levels being tested (26, 30, and 34% of CP) combined with two digestible energy levels (3,100 and 3,300 kcal DE/kg of diet) in three replicates. Juveniles averaging 2.33 ± 0.26 g were reared in a 25L-aquarium with controlled temperature (26 ± 1ºC), biological filter and stocking density of six fish/aquarium. Fish were fed ad libitum at 09:00 a.m., 2:00 p.m. and 4:30 p.m. The following performance parameters were evaluated: final weight, final length, weight gain, feed intake, feed conversion ratio, specific growth rate, protein efficiency ratio and condition factor. Fish fed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth; Ornamental fish; Productive performance; Protein/energy ratio; Pterophyllum scalare. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000600003 |
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| Ikeda,A.K.; Zuanon,J.A.S.; Salaro,A.L.; Freitas,M.B.D.; Pontes,M.D.; Souza,L.S.; Santos,M.V.. |
| The influence of fatty acid composition of the diets on the productive performance and on cold and heat tolerance of juvenile freshwater angelfish (Pterophyllum scalare), in three different phases, was studied. Phase I studied the productive performance of freshwater angelfish in a completely randomized experimental design with four treatments, canola, linseed, olive and soybean oils and four replicates during 50 days using 192 fish in 16 aquaria. Phase II studied the cold tolerance of juvenile freshwater angelfish using 72 juvenile freshwater angelfish, coming from phase I and maintained in 12 aquaria climatized chamber. The temperature was reduced 1ºC per day, until the observation of 100% fish mortality. Phase III, it was studied the heat tolerance of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ornamental fish; Fatty acids; Growth; Survival; Temperature. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300019 |
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| Ribeiro,Felipe de Azevedo Silva; Vasquez,Leonardo Avendaño; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue. |
| The objective of this study was to determine the optimal feeding level and feeding frequency for the culture of freshwater angelfish (Pterophyllum scalare). A randomized block design in a factorial scheme (3 × 2) with three feeding levels (30, 60 and 90 g/kg of body weight (BW)/day) and two feeding frequencies (1x and 2x/day) was set up in duplicate, representing 24 experimental units. Data were analyzed using two-way ANOVA and the Tukey test for comparison between means. After 84 days, results indicated that both factors influenced fish performance. No interaction between these factors was, however, observed. Increased feeding level and feeding frequency resulted in increased feed intake. The feed conversion ratio was negatively affected by feeding level,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquarium fish; Feed conversion rate; Feed intake; Nutrition; Ornamental fish; Specific growth rate. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600033 |
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| Zuanon,Jener Alexandre Sampaio; Carneiro,Antonio Policarpo Souza; Nascimento,Lidiane da Silva; Silva,Donizete Aparecido da; Pontes,Marcelo Duarte; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia. |
| The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dwarf gourami; Growth performance; Nutrient requirements; Ornamental fish. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000200010 |
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| Souto,Cristielle Nunes; Lemos,Marcos Vinicius Antunes de; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Lopes,Karina Ludovico de Almeida Martinez; Guimarães,Igo Gomes. |
| The optimal dietary digestible protein to energy ratio is critical for the success of fish farming. Considering that it provides the proper development of the animals, this study was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for goldfish fingerlings. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/kg. The growth parameters evaluated were daily weight gain (DWG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV) and energy retention ratio (ERR) and specific growth rate (SGR). Regardless FI, all the parameters were affected by protein and energy levels and interaction between both factors was observed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy requirement; Feed intake; Growth protein requirement; Ornamental fish. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000600008 |
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| Abreu,Janessa S.; Brinn,Richard P.; Gomes,Levy C.; McComb,Dawn Michelle; Baldisserotto,Bernardo; Zaiden,Sérgio F.; Urbinati,Elisabeth C.; Marcon,Jaydione L.. |
| We investigated the use of beta 1,3 glucan as an imunostimulant during a transport experiment to determine the effects upon the stress response of the pencilfish (Nannostomus trifasciatus). Pencilfish were fed for seven days with different concentrations of beta 1,3 glucan: 0.0% (control); 0.01%; 0.1% and 0.5% of beta 1,3 glucan per kg of feed-1. Fish were then transported for 24 hours by boat from Barcelos to Manaus. The highest dose of beta 1,3 glucan in the food increased Na+influx after 12 hours of transport and 0.1 and 0.5% beta 1,3 glucan maintained the flux of both ions close to zero at 24 hours. All doses of beta 1,3 glucan reduced K+ loss significantly in the beginning of the transport, but after 12 to 24 hours did not. No significant differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cortisol; Immunostimulant; Ion fluxes; Ornamental fish; Rio Negro basin. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300623 |
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| Lemos,Marcos Vinicius Antunes de; Arantes,Thiago Quirino; Souto,Cristielle Nunes; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Guimarães,Igo Gomes. |
| The expansion in the market of ornamental fish depends on the intensification of production systems and the generation of appropriate technologies. Therefore, it is necessary to know the nutritional requirements of each species for the formulation of nutritionally balanced diets. A 30-day feeding trial was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for Betta splendens fingerlings. Fifty-six all-male B. splendens with 1.03 ± 0.11 g average weight were randomly stocked into 56 1L-aquaria in a completely randomized design with a 2 x 4 factorial arrangement, comprising eight treatments and seven replication. Each fish was considered an experimental unit. Diets were formulated to contain 28.0, 35.0, 42.0... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protein requirement; Ornamental fish; Carcass composition; Energy requirement; Growth. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100009 |
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| COSTA,Igor David da; SOARES,Maiza Oliveira. |
| Trophic relationships in fish communities are affected by the availability of resources, which in turn is affected by spatial and temporal variations throughout the year. The aims of this study were to characterize the diet of A. tetramerus in a streamlet in the north of Brazil and compare its composition in different hydrological seasons (wet and dry seasons). Collections were performed every two months from October 2011 to September 2012 with the aid of seine nets, hand net and fishing traps in the streamlet located in the Machado River drainage basin in the Rondônia state. Most of the specimens collected were quite small (< 40 mm) and had empty stomachs. Our results showed that A. tetramerus feeds on a wide variety of items of plant origin, such as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Perciformes; Amazon; Feeding habits; Ornamental fish. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000400365 |
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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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| Espitia-Manrique,Carmen Helena; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue; Arias-Vigoya,Ángel Andrés; Nascimento,Thiago Matias Torres do; Silva,Edney Pereira da; Mansano,Cleber Fernando Menegasso. |
| ABSTRACT The objective of this study was to describe the growth of freshwater angelfish (Pterophyllum scalare) using the Gompertz model, determining the relative growth and allometric coefficients of body components in relation to body weight and protein weight. Six hundred animals were grown until 233 days of age. Data on chemical composition (water, lipid, protein, and ash) and weight measurements were obtained each 30 days. The Gompertz growth equation was used to analyze chemical allometry and to estimate growth parameters. The relationship between chemical components and body protein was estimated. Protein and body weight increased proportionally, with ash being the earliest nutrient (209.2 days), while lipid deposition occurred later. Linear... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allometry; Growth curve; Ornamental fish. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000800631 |
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| Registros recuperados: 32 | |
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