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| Registros recuperados: 501 | |
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| Gutiérrez Delgado, A. R.; Alvarez Cruz, A.; Frías, M. del P.; Alfonso, I.. |
| Esta investigación muestra los efectos del evento ENOS 1997-1998 en la temperatura superficial del mar (TSM) y en la abundancia de larvas de peces de las familias Thunnidae, Carangidae y Lutjanidae en las aguas oceánicas adyacentes a Cuba. La data histórica está integrada por 37 cruceros oceanográficos realizados entre los años 1966 y 1999. De ellos, 3 cruceros fueron realizados bajo el efecto del ENOS 1997-1998 en los meses de diciembre de 1997, septiembre de 1998 y mayo de 1999. También fue utilizada la serie de TSM desarrollada en el Centro Meteorológico Nacional de la NOAA para la cuadrícula de Cuba 23º-24ºN y 74º-85ºO entre los años 1966 y 1999. Las anomalías térmicas de la TSM, durante septiembre de 1998, provocaron un aumento tanto de la... |
| Tipo: Book |
Palavras-chave: Temperature; Water levels; Spawning; Pelagic fish; Fish. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5789 |
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| Carraschi, Silvia Patrícia; Faculdade de Ciências Agrárias e Veterinárias da UNESp de Jaboticabal; Cubo, Patrícia; Faculdade de Ciências Agrárias e Veterinárias da UNESP - Jaboticabal; Schiavetti, Bárbara Lopes; Faculdade de Ciências Agrárias e Veterinárias da UNESP - Jaboticabal; Shiogiri, Natália Sayuri; Faculdade de Ciências Agrárias e Veterinárias da UNESP - Jaboticabal; Cruz, Claudinei da; Faculdade de Ciências Agrárias e Veterinárias da UNESP - Jaboticabal; Pitelli, Robinson Antonio; Faculdade de Ciências Agrárias e Veterinárias da UNESP - Jaboticabal. |
| Os surfactantes são moléculas anfipáticas que reduzem a tensão superficial da água e fazem parte dos componentes inertes das formulações de produtos fitossanitários. Assim, os objetivos deste trabalho foram: estimar a concentração letal (CL(I)(50;96h)); classificar e avaliar a qualidade da água durante os testes de toxicidade aguda dos surfactantes: Agral®, Aterbane® BR, Ag-Bem®, Energic®, Fixade® e Gotafix® para o peixe mato grosso (Hyphessobrycon eques); e os sinais de intoxicação nos animais. Para tanto, os peixes foram aclimatados por dez dias em sala de bioensaio. Os animais foram expostos aos surfactantes em DIC com três repetições. A CL(I)(50;96h) do surfactante Agral® foi 3,29 mg L-1; do... |
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Palavras-chave: 2.05.03.00-8 Ecotoxicologia; Peixe; Qualidade de água; Comportamento Ecologia Aplicada Ecotoxicology; Fish; Water quality; Behavior. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6252 |
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| CARVALHO,Thaís Billalba; SOUZA,Ellen Cristina Monteiro de; PINHEIRO-DA-SILVA,Jaquelinne; VILLACORTA-CORREA,Marle Angélica. |
| ABSTRACT Brycon amazonicus is a native Amazonian fish that is important for aquaculture in South America. Larval mortality is high in this species in intensive breeding systems due to aggressiveness among larvae. The present study investigated experimentally the effects of body size heterogeneity on the aggressive behavior and survival of B. amazonicus during the early stages of larval development. Two treatments (larvae groups with homogeneous and heterogeneous body size) were evaluated throughout early larval stages tested at six time points: 12, 24, 36, 48, 60 and 72 hours after hatching (HAH). Two experiments quantified, respectively, aggressive interactions and mortality rates among larvae at each time point. The frequency of aggressive interactions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggressiveness; Fish; Larviculture; Mortality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400304 |
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| Seiffert,M.E.B.; Cerqueira,V.R.; Madureira,L.A.S.. |
| The effect of rotifers, Brachionus rotundiformis (S-type), fed three different diets: A (rotifer fed Nannochloropsis oculata), B (rotifer fed N. oculata and baker's yeast, 1:1), and C (rotifer fed N. oculata and baker's yeast, 1:1, and enriched with Selco<FONT FACE="Symbol">â</FONT>), was evaluated based on the survival, growth and swim bladder inflation rate of fat snook larvae. Rotifers of treatment A had higher levels (4.58 mg/g dry weight) of eicosapentaenoic acid (EPA) than B (1.81 mg/g dry weight), and similar levels (0.04 and 0.06 mg/g dry weight, respectively) of docosahexaenoic acid (DHA). Rotifers of treatment C had the highest levels of EPA (13.2 mg/g dry weight) and DHA (6.08 mg/g dry weight). Fat snook eggs were obtained by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Larvae; Centropomus parallelus; Feeding; Highly unsaturated fatty acid. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000500013 |
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| Melo,J.F.B.; Lundstedt,L.M.; Moraes,G.; Inoue,L.A.K.A.. |
| Aspects of digestion in juvenile silver catfish Rhamdia quelen fed with four levels of protein (20, 27, 34 and 41%) were studied. The studied traits were digestive enzymes (nonspecific proteases, trypsin, chymotrypsin, amylase and lipase) and weight gain. The experiment lasted 60 days; 160 juvenile catfish with initial body weight of 32 grams were transferred to the experimental system of 500L tanks with re-circulated and thermostatized water. The average weight of silver catfish increased with dietary protein and 41% of crude protein (CP) was accepted as the best one. Gastric protease activity increases with the CP level. The intestinal alkaline protease reached the peak at 27% CP and the highest activities were observed in the anterior section of the gut... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestive enzymes; Nutrition; Fish; Rhamdia quelen. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200027 |
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| Mahboob,Shahid; Kausar,Shazia; Jabeen,Farhat; Sultana,S.; Sultana,T.; Al-Ghanim,K.A.; Hussain,Bilal; Al-Misned,Fahad; Ahmed,Z.. |
| ABSTRACT: The present study was aimed to evaluate the effect of heavy metals on an important tissue of two fish species Cyprinus carpio and Wallago attu, sampled from the Indus river, Mianwali District, Pakistan. The concentration of selected heavy metals Fe, Cr, Cu, and in gills, muscles, kidney and liver was compared with an International standard of food fish. The overall metal concentrations among different weight categories in C. carpio were in the order of Fe > Cu > Cr >. In W. attu the overall accumulation of these metals were, in order of Fe > Cu > Cr > Pb The order of accumulation of metals in gills and muscle of C. carpio was Fe > Cr > Pb > Cu; kidney and muscles of W. attu was Fe > Cr > Cu > Pb; liver Fe >... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: River; Heavy metals; Fish; Weight; Pollution. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100334 |
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| Cheret, Romuald; Delbarre Ladrat, Christine; Verrez-bagnis, Veronique; De Lamballerie, Marie. |
| Calpains (calcium-activated neutral proteases) of sea bass (Dicentrarchus labrax L.) muscle may participate in the degradation of muscle tissue during postmortem storage. These enzymes are regulated by calpastatin, their endogenous specific inhibitor. The objective of this study was to evaluate the changes encountered by the calpain system during the postmortem storage of fish muscle after high-pressure treatment. From 100 MPa, high-pressure treatment of purified calpains results in a loss of their activity as well as in the dissociation of the heterodimeric form. In muscle, the high-pressure processing decreases the initial activity of calpain. This loss in activity may be due to an inactivation by a change of structure. Initial calpastatin activity is... |
| Tipo: Text |
Palavras-chave: Postmortem denaturation; High pressure; Fish; Calpain system. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2786.pdf |
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| Veras,Galileu Crovatto; Murgas,Luis David Solis; Rosa,Priscila Vieira; Zangeronimo,Márcio Gilberto; Ferreira,Matheus Soares da Silva; Leon,Jonathan Antonio Solis-De. |
| The objective of this study was to evaluate the effect of photoperiod on locomotor activity, growth and gonadal development in Nile tilapia (Oreochromis niloticus) fingerlings. A completely randomised design was used, with five treatments (0L:24D, 6L:18D, 12L:12D, 18L:6D and 24L:0D) and four replicates, with the aquarium as the experimental unit. One hundred and sixty fingerlings of tilapia weighing 3.21±0.05 g and measuring 4.35±0.07 cm each were distributed among 20 aquaria of 20 L in a recirculation system with the temperature controlled to 27 °C, with eight fish per aquarium. Feeding was carried out twice daily for 75 days, with extruded feed containing 40% crude protein. The fingerlings subjected to a photoperiod of 12L:12D as well as those under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed intake; Fish; Locomotor rhythm; Oreochromis niloticus; Performance; Sexual maturation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001200002 |
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| Navarro,Fernanda Keley Silva Pereira; Navarro,Rodrigo Diana; Murgas,Luis David Solis; Felizardo,Viviane de Oliveira. |
| Some studies and scientific investments have been done in aquaculture aiming to minimize the stress of the fish due to different factors, as management, nutritional status, water quality, temperature, photoperiod, and salinity. This study aimed to verify the effect of photoperiod on locomotor activity and plasma levels of cortisol and glucose in female Lambari. One hundred and twenty female Lambari adult were maintained in aquaria of 20 liters each in a completely randomized design with three treatments (T1 = 0Light: 24Dark, T2 = 12L: 12D, T3 = 24L: 0D) and four replications. The daily locomotor activity was registered during 15 days using an infrared photocell. After 40 days of experiment and previous fasting for 24 hours, fish were euthanized by a lethal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Synchronizer; Glucose; Cortisol; Swimming behaviour. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200008 |
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| Oliveira,L.M.F.S.; Leal,R.S.; Mesquita,T.C.; Pimenta,M.E.S.G.; Zangeronimo,M.G.; Sousa,R.V.; Alvarenga,R.R.. |
| The objective was to evaluate the use of ractopamine (RAC) in the diet for pacu (Piaractus mesopotaminus) in the finishing phase on some quality parameters of the fillets. Thirty-five animals weighing 0.868±0.168kg were distributed in a completely randomised design with five treatments (0.0 - control; 11.25, 22.50, 33.75 and 45 ppm of RAC) and seven replicates with two fillets obtained from the same animal. The diets were isocaloric and isoprotein and experimental time was 90 days. RAC did not affect (P>0.05) the initial pH or ph after 24 hours of the fillets. Compared to the control, RAC increased (P<0.05) the moisture content of the fillets in natura and lipid oxidation of samples stored for 12 days in the refrigerator or freezer for 60 days.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Lipid oxidation; Animal production; Fillet quality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000100026 |
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| Suquet, Marc; Chereguini, Olvido; Omnes, Marie-helene; Rasines, Inmaculada; Normant, Yvon; Souto, Isabel; Quemener, Loic. |
| The effect of different parameters on shea-term storage capacity of turbot ova was assessed over a 45-h period after ova collection for fertilization rates and over a 9-h period after ova collection for hatching rates. Increasing the volume of ova sampling from 0.5 to 2.5 mt, as well as adding an antibiotic-antimicotic solution or oxygen did not significantly change the storage capacity of ova. Regarding the hatching rates, a higher storage ability was recorded at 8 and 13 degrees C, compared to 3 degrees C. The mean composition of the ovarian fluid was determined (n = 57 spawns). Use of a diluent mimicking the ovarian fluid significantly decreased the storage ability as assessed by the fertilization rates but did not modify the hatching rates. Diluting... |
| Tipo: Text |
Palavras-chave: Psetta maxima; Turbot; Calcium; Ovarian fluid; Short term storage; Ova; Fish; Psetta maxima; Turbot; Calcium; Liquide ovarien; Conservation à court terme; Ovules; Poisson. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-857.pdf |
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| Logato,Priscila Vieira Rosa; Albernaz,Norka da Silva; Ribeiro,Paula Adriane Perez; Freitas,Rilke Tadeu Fonseca de; Fialho,Elias Tadeu. |
| The experiment carried out at National Center for Research in Tropical Fish Pirassununga, SP, aiming to determine the effect of the ration processing on the apparent digestibility coefficients of the ingredients for the piau (L. elongatus). A total of 600 males of piau were utilized, allotted into six ponds of 300L. The applied treatments were: grinder processed ration, pelleting ration and extruded ration, utilizing rations with 32% crude protein and 3400 Kcal DE.Kg-1. The experiment was in a randomized blocks design with three treatments, three blocks and two replicates. The data were submitted to variance analysis by the SAEG computational package and the means of the treatments compared by SNK test (5% of significance). The results showed that there... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding; Fish; Ingredients; Nutrition. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000300032 |
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| Rios,Flavia Sant'Anna; Donatti,Lucélia; Fernandes,Marisa Narciso; Kalinin,Ana Lucia; Rantin,Francisco Tadeu. |
| Hoplias malabaricus (traíra) were experimentally starved (0 to 240 days) and subsequently re-fed for 30 days (after 90 and 240-d fasting). Long-term starvation produced minor changes in muscle composition, but shrinkage of muscle fibres was a conspicuous result. The diameter of muscle fibres decreased gradually and the spaces among them increased as the starvation period progressed. After re-feeding, fish prior starved for 90 days presented partial restoration on diameter of muscle fibres. However, the fibres remained shrunken after re-feeding following 240-d fasting. While the lipid content did not change, the protein levels fell after 240-d fasting, but they were restored after re-feeding |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Morphology; Muscle; Proximate composition; Starvation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200025 |
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| Cheret, Romuald; Chapleau, Nicolas; Delbarre Ladrat, Christine; Verrez-bagnis, Veronique; De Lamballerie, Marie. |
| High pressure is an innovative non-thermal food-preservation technology. We studied the effect of high-pressure treatment up-to 500 MPa for 5 min on physical characteristics of sea bass fillets after 0, 7, and 14 d of refrigerated storage.. Color results exhibited an increase of lightness and a slight change of hue, which might be imperceptible in cooked fish. High-pressure treatment induced a decrease of exudation and water-holding capacity Pressure treatment above 300 MPa provoked higher fish hardness after storage than in untreated sample, proving the ability of high pressure to improve textural, quality of chilled, stored fish fillet. These assessments were corroborated with microstructure observations. We showed that high-pressure treatment at 500 MPa... |
| Tipo: Text |
Palavras-chave: Preservation; Microstructure; Texture profile analysis; High pressure; Fish. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-734.pdf |
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| Franco,Maria Luiza Rodrigues de Souza; Viegas,Elisabete Maria Macedo; Kronka,Sérgio Nascimento; Vidotti,Rose Meire; Assano,Marcelo; Gasparino,Eliane. |
| The effects of hot (45-90ºC/5 hours) and cold (27-45ºC/10 hours) smoking processes on the organoleptic properties, yield and composition of matrinxa (Brycon cephalus) fillets are evaluated. No significant differences were observed for fillet yield in both non-smoked and smoked fillets. Smoking process losses were significantly higher for hot smoked (19.37%) when compared to cold smoked (17.08%). Smoking process reduced moisture (in natura = 72.91%, for hot = 58.51% and cold = 59.68%) and increased crude protein, lipid and ash contents. However, there was a significant difference only for protein level between hot smoked (28.07%) and cold smoked (27.14%). Cold smoked process resulted in better fillet appearance and color, while hot smoked presented superior... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brycon cephalus; Composition smoking; Fish; Sensory attributes. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000400001 |
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| Claireaux, Guy; Theron, Michael; Prineau, Michel; Dussauze, Matthieu; Merlin, Francois Xavier; Le Floch, Stephane. |
| The worldwide increasing recourse to chemical dispersants to deal with oil spills in marine coastal ecosystems is a controversial issue. Yet, there exists no adequate methodology that can provide reliable predictions of how oil and dispersant-treated oil can affect relevant organism or population-level performance. The primary objective of the present study was to examine and compare the effects of exposure to untreated oil (weathered Arabian light crude oil), chemically dispersed oil (Finasol, TOTAL-Fluides) or dispersant alone, upon the ability of fish for environmental adaptation. To reach that goal, we implemented high-throughput, non-lethal challenge tests to estimate individual hypoxia and heat tolerance as surrogate measures of their capacity to... |
| Tipo: Text |
Palavras-chave: Oil-spill; Dispersant; Fish; Temperature; Hypoxia; Survival; Growth; Environmental adaptation ability; Darwinian fitness. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00137/24831/23045.pdf |
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| Machado,Marcelo Rubens; Fanta,Edith. |
| Gills are vital structures for fish, since they are the main site for gaseous exchange as well as partially responsible for osmorregulation, acid-basic balance, excretion of nitrogenous compounds and taste. Chemicals in the water may alter the morphology of branchial cells of fish that are, therefore, a useful model for environmental impact and ecotoxicology studies. In order to investigate the effects of an organophosphorous compound, methyl parathion, on the gills of the fish, samples of Metynnis roosevelti were exposed to lethal (7ppm) and sublethal (1ppm) doses of Mentox 600 CE. Through light and scanning electron microscopy, shrinking of the branchial epithelium, followed by detachment and hyperplasia were observed. Externally, the branchial filaments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gill; Fish; Methyl parathion; Toxicity; Morphology. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300008 |
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| Registros recuperados: 501 | |
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