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| Registros recuperados: 31 | |
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| Sánchez Pérez, Luis Antonio. |
| La Asociación de Especie Producto Trucha de Puebla (2008), menciona que la truticultura se práctica en cinco regiones: Sierra Norte, Sierra Nororiental, Valle de Serdán, Atlixco-Matamoros y Angelópolis. En esta última, se ubica la Sierra Nevada, región de estudio de la investigación. Los productores de trucha Arco Iris de la Sierra Nevada de Puebla iniciaron la práctica de la acuacultura por parte del sector privado en 1962; y los productores del sector social la iniciaron en 1987. Desde el principio de sus actividades ambos grupos han enfrentado diversos problemas. Entre estos, aumento de precios de los insumos, disponibilidad de alimentos durante el año, mercados inestables, escasos apoyos económicos del sector gubernamental principalmente a nivel... |
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Palavras-chave: Organización; Trucha Arco Iris; Proceso de producción; Comercialización; Organization; Rainbow trout; Production process; Marketing; Desarrollo rural; Maestría. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/667 |
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| Melis, Theodore S; U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center; tmelis@usgs.gov; Walters, Carl J; Fisheries Centre, University of British Columbia; c.walters@fisheries.ubc.ca; Korman, Josh; Ecometric Research Inc.; jkorman@ecometric.com. |
| With a focus on resources of the Colorado River ecosystem below Glen Canyon Dam, the Glen Canyon Dam Adaptive Management Program has included a variety of experimental policy tests, ranging from manipulation of water releases from the dam to removal of non-native fish within Grand Canyon National Park. None of these field-scale experiments has yet produced unambiguous results in terms of management prescriptions. But there has been adaptive learning, mostly from unanticipated or surprising resource responses relative to predictions from ecosystem modeling. Surprise learning opportunities may often be viewed with dismay by some stakeholders who might not be clear about the purpose of science and modeling in adaptive management. However, the experimental... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive management; Colorado River; Ecosystem modeling; Glen Canyon Dam; Grand Canyon; High-flow experiments; Humpback chub; Rainbow trout; Surprise learning. |
| Ano: 2015 |
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| Santana,Paula; Palacios,Claudia; Narváez,Edgar; Guzmán,Fanny; Gallardo,José A; Mercado,Luis. |
| Background: Interleukin 8 is a chemokine that is produced by several types of cells, like macrophages and has chemotactic activity in particular on neutrophils, playing a key role during the inflammatory process. It has been demonstrated at the molecular level that this molecule is present and conserved in several vertebrate groups, pointing its importance. Analysis of the amino acid sequence of IL-8, projected from cDNA of Salmo salar, presents homology with the sequences of mammals, poultry and lamprey, indicating the presence of a homologous molecule in higher fish. However, there is no information at protein level, which allows characterizing the regulatory role of this molecule during the immune response in fish. Results: In this work, we designed and... |
| Tipo: Journal article |
Palavras-chave: Anti-IL-8; Fish antibodies; Fish chemokine; Rainbow trout; Synthetic peptide epitope. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000500020 |
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| Porto-Foresti,Fábio; Oliveira,Claudio; Tabata,Yara A.; Rigolino,Marcos G.; Foresti,Fausto. |
| In salmonid species, nucleolar organizing regions (NORs) have frequently been found on a single chromosome pair. However, some other, smaller yet active NORs have also been described. In the present study, NORs were found to be located in different positions on the chromosomes of 12 rainbow trout samples (11 cultivated and one naturalized stocks). Three phenotypes were found: 1) NORs located on two submetacentric chromosomes, in a subterminal position on the short arm (AA); 2) NORs located on two submetacentric chromosomes, in a subterminal position on the long arm (BB); and 3) NORs located on two submetacentric chromosomes, one in a subterminal position on the short arm, and the other in a subterminal position on the long arm (AB). Phenotype AA was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NOR polymorphism; Fish cytogenetics; Rainbow trout. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400009 |
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| Begout, Marie-laure; Lagardere, Jean-paul. |
| An experiment was conducted to measure swimming activity of rainbow trout (254.0 +/- 33.7 g) held in outdoor tanks under three culture conditions with stocking density used to generate differences: 27 (Culture Density 1, CD1), 80 (CD2) and 136 kg m(-3) (CD3). Fish were fed dry pellets at 1% of tank biomass from 9h00 to 13h00 with automatic feeders. Using acoustic telemetry, fish positions were monitored every 5 s during 48 h for nine fish (three in each treatment). Swimming behaviour was analysed in terms of trajectories: they varied between (i) holding position (high turning angles), (ii) chaotic trajectories (equal use of all turning angles) and (iii) circular swimming (average turning angle of 60degrees). Space utilisation differed for each culture... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Aquaculture; Swimming activity; Fish welfare; Acoustic telemetry. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-387.pdf |
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| Gomez Requeni, P; Calduch Giner, J; De Celis, S; Medale, Francoise; Kaushik, Sadasivam; Perez Sanchez, J. |
| The activity of the somatotropic axis was analysed in juvenile rainbow trout (Oncorhynchus mykiss) fed either a fishmeal-based diet (FM) or graded levels of plant proteins to replace 50 % (PP50 diet), 75 % (PP75 diet) or 100 % (PP100 diet) of the fishmeal protein. For this purpose, partial cloning and sequencing of the gene encoding rainbow trout growth hormone receptor (GHR) was first accomplished by RT-PCR, using degenerate primers based on the sequences of non-salmonid fish GHR. Growth rates and energy retention were lowered by the PP75 and PP100 diets and a concurrent and progressive increase in plasma levels of growth hormone (GH) was found. However, no changes in hepatic GH binding and total plasma insulin-like growth factor (IGF)-I levels were... |
| Tipo: Text |
Palavras-chave: Insulin like growth factor; Growth hormone receptor; Growth hormone; Plant proteins; Rainbow trout. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-3620.pdf |
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| Ducasse Cabanot, S; Zambonino, Jose-luis; Richard, N; Medale, Francoise; Corraze, Genevieve; Mambrini, M; Robin, Jean; Cahu, Chantal; Kaushik, Sadasivam; Panserat, S. |
| For sustainable aquaculture, the removal of marine resource ingredients in fish diets is an important objective. While most studies focus on the replacement of fish oil by vegetable oil, little is known on the nutritional effects of presence (which corresponds to the control diet) or absence of dietary fish oil. We studied fatty acid composition of brush-border membranes and digestive enzyme activities of the intestine and measured the expression and activities of several enzymes involved in the hepatic intermediary metabolism of rainbow trout (Oncorhynchus mykiss) fed for 7 weeks with or without fish oil. The diets were pair-fed to ensure that fish fed either diet had comparable carbohydrate and protein intakes. Absence of fish oil significantly reduced... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Metabolism; Fish oil; Digestion; Aquaculture. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3506.pdf |
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| Sampietro Coloh, Sonia. |
| A triploid strain of rainbow trout (Onchorynchus mykiss) was reared in two experiments testing density effect on growth and flesh quality. Physiological index and corporal condition were also considered. Environmental parameters were maintained identical between densities. Two fold 20, 50 and 80 Kg m·3 stocking densities were reared at 1.3% daily ration. No differences were found in fish growth neither in fish quality. A second experience compared two densities (50 and 110 kg m-3 ) and oxygen supplementation. Fish were fed ad libitum. Weight gain diminished at higher densities and oxygen supplementation had a favourable effect on fish growth. No differences were found in flesh quality parameters tested. |
| Tipo: Text |
Palavras-chave: Rainbow trout; Onchorynchus mykiss stocking density; Flesh quality; Fin condition; Body condition. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00443/55473/57003.pdf |
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| Kiilerich, Pia; Servili, Arianna; Peron, Sandrine; Valotaire, Claudiane; Goardon, Lionel; Leguen, Isabelle; Prunet, Patrick. |
| This study aims to shed light on corticosteroid regulation of stress in teleost fish with focus on the corticosteroid signalling system. The role of the mineralocorticoid-like hormone 11-deoxycorticosterone (DOC) in fish is still enigmatic, as is the function of the mineralocorticoid receptor, MR. Low plasma DOC levels and ubiquitous tissue distribution of MR question the physiological relevance of the mineralocorticoid-axis. Furthermore, the particular purpose of each of the three corticosteroid receptors in fish, the glucocorticoid receptors, GR1 and GR2, and the MR, is still largely unknown. Therefore we investigate the regulation of cortisol and DOC in plasma and mRNA levels of MR, GR1 and GR2 in the HPI-axis tissue (hypothalamus, pituitary and... |
| Tipo: Text |
Palavras-chave: Stress; Rainbow trout; Confinement; Cortisol; DOC; MR; GR1; GR2; HPI-axis. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00396/50737/51439.pdf |
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| Haffray, Pierrick; Vandeputte, Marc; Petit, V.; Pincent, Cedric; Chatain, Beatrice; Chapuis, H.; Meriaux, J. C.; Coudurier, B.; Quillet, E.; Dupont-nivet, M.. |
| Application of DNA parentage assignment for commercial selection in aquaculture is still rare. An experiment was performed to quantify and to minimize maternal effects on growth in rainbow trout. Six hundred families were reared until 198 day post fertilization (dpf) according to two different procedures. In the first procedure (NORM), all families were pooled at eyed stage. In the second procedure (MIN), where maternal effects due to differences in egg size were expected to be minimal, the spawns were divided into sub-groups with similar mean egg weight at eyed stage. These sub-groups were then pooled when they achieved the same mean body length (147 dpf). Genetic parameters were estimated for body weight, body length and condition factor at 198 dpf, with... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Fingerprint; Maternal effect; Heritability; Growth; Triploid. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00115/22639/20395.pdf |
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| Burel, Christine; Boujard, Thierry; Kaushik, Sadasivam; Boeuf, Gilles; Mol, K; Van Der Geyten, S; Darras, V; Kuhn, E; Pradet Balade, B; Querat, B; Quinsac, A; Krouti, M; Ribaillier, D. |
| Two rapeseed meals (RM1 and RM2), containing glucosinolates at a concentration of 26 and 40 mumol/g, respectively, were incorporated at increasing levels (10, 20, and 30% for RM1 and 30 and 50% for RM2) in diets of juvenile rainbow trout. Disturbances in the thyroid axis appeared after 14 days of feeding (with a dietary incorporation level of 10%). The dietary supplementation with T-3 or iodine induced an increase in plasma T-3 levels, compared to that in fish fed the RM diets, and reduced the deleterious effect of RM on growth. When trout were reared in seawater, there was also a slight increase in thyroid hormone levels. TSH treatment had no effect on the thyroid hormone plasma levels. The incorporation of 30% of RM1, which induced a lower dietary... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Iodine; TSH; Deiodinase activity; Thyroid function; Growth; Glucosinolates; Rapeseed. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-677.pdf |
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| Beltran, M.; Fernandez-borras, J.; Medale, Francoise; Perez-sanchez, J.; Kaushik, Sadasivam; Blasco, J.. |
| For developing efficient diets, two sets of experiments examined whether the use and allocation of dietary protein can be traced by labelling with stable isotopes (N-15 and C-13) in two culture fish (Oncorhynchus mykiss and Sparus aurata). In the first experiment, natural abundance and tissue distribution of these isotopes were determined, by measuring the delta C-13 and delta N-15 values by isotopic ratio mass spectrometry, in fingerlings (14-17 g) adapted to diets differing in the percentage of fish meal replacement by plant protein sources. For both species, delta N-15 and delta C-13 were greater in tissues with higher protein and lower lipid content. Delta N-15 of diets and tissues decreased as replacement increased, suggesting delta N-15 can be used... |
| Tipo: Text |
Palavras-chave: Sea bream; Rainbow trout; Protein; Diet; Delta N 15; Delta C 13. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6966.pdf |
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| Registros recuperados: 31 | |
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