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Registros recuperados: 28
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An Investigation of the Ornamental Fish Trade in Mozambique. Phase I: Information macrodiagnostic and project appraisal OceanDocs
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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Características biológicas de cinco especies de peces marinos ornamentales. OceanDocs
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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Description of growth and body composition of freshwater angelfish (Pterophyllum scalare) by Gompertz model R. Bras. Zootec.
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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Dietary protein and energy requirements of juvenile freshwater angelfish R. Bras. Zootec.
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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Differential survivorship of congeneric ornamental fishes under forecasted climate changes are related to anaerobic potential Genet. Mol. Biol.
Gonçalves,Luciana Mara Fé; Silva,Maria de Nazaré Paula da; Val,Adalberto Luis; Almeida-Val,Vera Maria Fonseca de.
Abstract Two Amazonian closely related tetras – cardinal Paracheirodon axelrodi and green neon P. simulans – were artificially acclimatized to environmental chambers mimicking future climate change scenarios (mild, moderate and extreme), using a microcosm facility. P. simulans survived (100%) to all scenarios after 30 days exposure, while P. axelrodi presented decreasing survival percentages according to environmental severity. These differences may be the reflection of distinct natural acclimatization to microhabitats between the species, which differ in thermal conditions. Survival responses might be related to differences in relative gene expression of lactate dehydrogenase (Ldh), suggesting that P. axelrodi anaerobic potential is lower or non-existent...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ornamental fish; Enzyme activity; Relative gene expression; IPCC scenarios; Lactate Dehydrogenase (Ldh).
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000100107
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Duration of co-feeding on the Nishikigoi Cyprinus carpio larvae during weaning from live to inert food in an indoor system Ciência Rural
Fosse,Paulo José; Mattos,Douglas da Cruz; Cardoso,Leonardo Demier; Radael,Marcella Costa; Filho,João Carlos Fosse; Vidal Júnior,Manuel Vazquez.
ABSTRACT: This study aimed to evaluate the effects of the co-feeding period (C) on the survival and growth of larvae of nishikigoi Cyprinus carpio, during the weaning period from live to inert food. A total of 1680 larvae with initial weight of 1.33 ± 0.12mg and initial length of 6.0 ± 0.33mm were used. The inert diet used was a commercial ration with 55% crude protein and the live food was the newly hatched nauplii of Artemia franciscana. The experiment was conducted following a completely randomized design with six treatments and four replications. Treatments constituted of: a) LF = supply of live food throughout the experimental period; b) C4 = 6 days of live food + 4 days of co-feeding (inert diet and live food) + 16 days of inert diet; c) C8 = 6 days...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding; Feed Intake; Larval fish; Ornamental fish.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400652
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Effect of beta 1,3 glucan in stress responses of the pencilfish (Nannostomus trifasciatus) during transport within the rio Negro basin Neotropical Ichthyology
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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Effects of Curcuma longa rhizome on growth, skin pigmentation, and stress tolerance after transport of Trichogaster labiosa R. Bras. Zootec.
Nascimento,Lidiane da Silva; Reis,Sendy Moreira; Ferreira,Pollyanna de Moraes França; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia; Zuanon,Jener Alexandre Sampaio.
ABSTRACT We aimed to evaluate the effects of Curcuma longa as growth promoter, skin pigmentation enhancer, and stress reducer in diets of Trichogaster labiosa after transport. We used five diets containing 0.0, 1.0, 5.0, 10.0, and 25.0 g kg−1 of turmeric rhizome powder. We observed quadratic effects of turmeric supplementation for feed intake, weight gain, final length, and specific growth rate. The estimated amount of turmeric that decreased these variables ranged from 15.53 to 16.39 g kg−1. Quadratic effects of supplementation of turmeric for cyan and black dorsal skin coloring indices were observed, with estimated values that increased these variables equal to 15.03 and 17.44 g kg−1, respectively. After fish transport, quadratic effects of turmeric were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feed additive; Fish nutrition; Growth promoters; Ornamental fish.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100154
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Effects of digestible protein to energy ratios on growth and carcass chemical composition of siamese fighting fish (Betta splendens) Ciência e Agrotecnologia
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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Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens R. Bras. Zootec.
Giannecchini,Luiz Gustavo; Massago,Haluko; Fernandes,João Batista Kochenborger.
This study investigated the effect of different photoperiods (24 h of light (L):0 h of darkness (D); 20L:4D; 16L:8D; 12L:12D; and 8L:16D) on the reproduction and growth of Betta splendens. The results showed that spawning frequency was significantly higher in couples reared under 16L:8D and 12L:12D, in comparison with other treatments. The highest number of eggs per spawn was obtained under 16L:8D (544.76±375.23) and 12L:12D (471.13±261.52), and the lowest values were detected for 24L:0D (128.55±58.14) and 20L:4D (187.87±103.84). Fertility and fecundity also showed significantly higher average values in 16L:8D and 12L:12D when compared with 24L:0D and 20L:4D treatments. Egg volume and perivitelline space were significantly higher in 24L:0D treatments that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg production; Fertility; Light regimen; Ornamental fish.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400001
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Feeding ecology of Serrapinnus notomelas (Characiformes: Cheirodontinae) in small forest streams in the Machado River basin, Rondônia, Brazil Acta Amazonica
COSTA,Igor David da; ROCHA,Vanessa Martins da.
ABSTRACT Studies on the trophic structure of fish give information on species autoecology and their role in the ecosystem. The aims of this study were to characterize the diet of Serrapinnus notomelas in small streams of the River Machado basin and to assess the effect of rainfall seasonality. Fish were collected bimonthly from July 2013 to May 2014 with seine nets and hand nets. The length of each specimen was measured to identify category classes. There were also measured the fullness index and volume of each ingested item, and these data were combined to obtain an alimentary index. We used ANOVA and Kruskal-Wallis to test for differences between length classes and fullness index, Chi-squared tests to detect seasonal differences in origin of food items...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Characidae; Trophic ecology; Igarapés; Ornamental fish; Amazon.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100019
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Feeding level and frequency for freshwater angelfish R. Bras. Zootec.
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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Glyphosate commercial formulation effects on preoptic area and hypothalamus of Cardinal Neon Paracheirodon axelrodi (Characiformes: Characidae) Neotropical Ichthyology
Riaño-Quintero,Camilo; Gómez-Ramírez,Edwin; Hurtado-Giraldo,Hernán.
ABSTRACT In Colombia the use of glyphosate commercial formulations (Roundup™) for spraying have left deleterious effects on animals and humans. Much of this spraying takes place at the Orinoco basin, habitat of one of the most exported ornamental fish in Colombia, Cardinal neon. To evaluate the effect of Roundup Activo™ four experimental treatments were carried out with 0 mg/L (T1), 0.1 mg/L (T2), 1 mg/L (T3) and 5 mg/L (T4) during 30 days of exposure. The fishes were processed for high-resolution optical microscopy. The main finding of Roundup Activo™ exposure was an increase in mast cells number in brain blood vessels and some neuronal nuclei of the preoptic and posterior diencephalic areas, including hypothalamus. A correlation between concentrations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicide; Mastocyte-like cells; Ornamental fish; Survival.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500201
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Influence of photoperiod on growth, uniformity, and survival of larvae of the Amazonian ornamental Heros severus (Heckel, 1840) R. Bras. Zootec.
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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Metacercariae of Tylodelphys sp. (Trematoda: Diplostomidae) parasite of Brochis multiradiatus and Corydoras splendens (Siluriformes: Callichthyidae) from the Peruvian Amazon Biological Sciences
Morey, Germán Augusto Murrieta.
Corydoras splendens (Castelnau, 1855) and Brochis multiradiatus (Orcés V., 1960) are highly demanded for exporters in the Peruvian Amazon and importers all over the world.  The exportation of this fish species may represent a gateway for endoparasites to enter in a new environment with serious effects, so, the present study reports the presence of Tylodelphys sp. infecting C. splendens and B. multiradiatus. Fish were acquired from fishermen of the city of Iquitos, Peru. After the necropsy and analyses of the fish, metacercariae of Tylodelphys sp. were found in the liver and intestine. This finding represents the first report of Tylodelphys Diesing, 1850 infecting a fish in the Peruvian Amazon. Considering the possible damages caused by species of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Callichthyids; Digenean; Ornamental fish; Parasite.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/41280
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Morphological and immunohistochemical comparison of the pituitary gland between a tropical Paracheirodon axelrodi and a subtropical Aphyocharax anisitsi characids (Characiformes: Characidae) Neotropical Ichthyology
Camacho,Laura Rincón; Pozzi,Andrea G.; de Freitas,Eliane G.; Shimizu,Akio; Pandolfi,Matías.
ABSTRACT Cardinal tetra Paracheirodon axelrodi and bloodfin tetra Aphyocharax anisitsi are two species of characids with high trade value as ornamental fish in South America. Although both species inhabit middle water layers, cardinal neon exhibits a tropical distribution and bloodfin tetra a subtropical one. Generally, these species are difficult to grow, so it becomes essential to know some key components of the neuroendocrine system to achieve their reproduction in captivity. Considering the importance of deepening the knowledge of the reproductive physiology through functional morphology, for the first time in this work we performed an anatomical, morphological and immunohistochemical analysis of the pituitary gland of these two species. In both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adenohypophysis; Histology; Neurohypophysis; Ornamental fish.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100211
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Morphological variation among populations of Hemigrammus coeruleus (Characiformes: Characidae) in a Negro River tributary, Brazilian Amazon Neotropical Ichthyology
Lazzarotto,Henrique; Barros,Thiago; Louvise,José; Caramaschi,Érica Pellegrini.
ABSTRACT We explored patterns of phenotypic variation in Hemigrammus coeruleus from the Unini River basin, a blackwater river in the Brazilian Amazon. Geometric morphometrics was used to evaluate variation in body shape among populations from four tributaries (UN2-UN5). We found no evidence for sexual dimorphism in body size and shape. However, morphological differences among populations were detected as the analyses recovered significant groups corresponding to each sub-basin, with some overlap among them. The populations from UN2, UN3 and UN5 had more elongate bodies than fish from UN4. The most morphologically divergent population belonged to UN4, the tributary with the most divergent environmental conditions and the only one with seasonally-muddy...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geometric morphometrics; Morphology; Ornamental fish; Phenotypic plasticity; Populations.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100218
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Multiparasitism in gills of Metynnis lippincottianus from the environmental protection area of Curiaú river, Eastern Amazon Ciência Rural
Carvalho,Abthyllane Amaral de; Ferreira,Roger Leomar da Silva; Araújo,Priscila Gomes de; Negrão,Márcio Charles da Silva; Videira,Marcela Nunes.
ABSTRACT: The high fish diversity of the Amazon has been the subject of study for several research projects because of the importance of its ecosystems. The Environmental Protection Area of the Curiaú River is composed of permanent and temporary lakes within the floodplain forests, favoring a rich diversity of fish species. Pratinha. (Metynnis lippincottianus) is an ornamental fish, widely distributed throughout Brazil and French Guiana. Fish parasites may reflect the environmental quality, as well as the habits of their host. Considering the importance of understanding and contributing to the expansion of studies on fish parasites, the present study aimed to investigate the gills of Metynnis lippincottianus from the Curiaú River basin in the municipality...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ornamental fish; Parasitic fauna; Infection.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600501
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Optimal feeding frequency for Heros severus (Heckel, 1840), an Amazon ornamental fish R. Bras. Zootec.
Paixão,Daércio José de Macedo Ribeiro; Brabo,Marcos Ferreira; Soares,Lourdes Marília Oliveira; Campelo,Daniel Abreu Vasconcelos; Veras,Galileu Crovatto.
ABSTRACT The influence of feeding frequency on growth performance, batch uniformity, and survival rate of severum (Heros severus) larvae and juveniles was investigated in two experiments. In the first, 200 five-day-old severum larvae with 3.20±0.31 mg and 6.20±0.39 mm were randomly distributed into 20 aquaria (1 L) and fed 500 Artemia nauplii larvae−1 day−1 for 15 days. In the second, 120 severum juveniles, 178.19±33.59 mg and 1.82±0.09 cm, were randomly distributed into 15 aquaria (300 L) and hand-fed a commercial diet (400.0 g kg−1 crude protein and 21.2 kJ g−1 gross energy) until apparent satiety for 30 days. For both experiments, feeding frequencies of one, two, three, four, and five meals day−1 were evaluated. We used four replicates for the first...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Amazon fish; Food management; Growth performance; Nutrition; Ornamental fish.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100156
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Possible applications of modern fish larviculture technology to ornamental fish production OMA
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
Registros recuperados: 28
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