Base de dados : LILACS
Pesquisa : B01.050.150.900.493.200.244 [Categoria DeCS]
Referências encontradas : 9 [refinar]
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Texto completo SciELO Brasil
Texto completo
Id: lil-755018
Autor: Benvenuti, T; Rodrigues, MAS; Arenzon, A; Bernardes, AM; Zoppas-Ferreira, J.
Título: Toxicity effects of nickel electroplating effluents treated by photoelectrooxidation in the industries of the Sinos River Basin / Avaliação do efeito tóxico de efluentes oriundos da indústria galvânica na região da Bacia do Rio dos Sinos após o tratamento pelo processo de fotoeletrooxidação
Fonte: Braz. j. biol;75(2,supl):17-24, May 2015. tab, ilus.
Idioma: en.
Resumo:

The Sinos river Basin is an industrial region with many tanneries and electroplating plants in southern Brazil. The wastewater generated by electroplating contains high loads of salts and metals that have to be treated before discharge. After conventional treatment, this study applied an advanced oxidative process to degrade organic additives in the electroplating bright nickel baths effluent. Synthetic rinsing water was submitted to physical-chemical coagulation for nickel removal. The sample was submitted to ecotoxicity tests, and the effluent was treated by photoelectrooxidation (PEO). The effects of current density and treatment time were evaluated. The concentration of total organic carbon (TOC) was 38% lower. The toxicity tests of the effluent treated using PEO revealed that the organic additives were partially degraded and the concentration that is toxic for test organisms was reduced.

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A Bacia do Rio dos Sinos é uma região do Sul do Brasil que sedia um importante pólo da indústria coureiro-calçadista incluindo, desde o beneficiamento das peles, em curtumes, à fabricação dos acessórios, em indústrias metalúrgicas e de galvanoplastia. O efluente gerado por processos galvânicos contém carga elevada de sais e metais que devem ser tratados antes do descarte. Neste artigo foi avaliada a aplicação de um processo oxidativo avançado após o tratamento convencional do efluente, visando degradar os aditivos orgânicos presentes nos efluentes dos banhos de eletrodeposição de níquel brilhante. Um efluente sintético foi tratado pelo processo físico-químico de coagulação para a remoção do níquel. A amostra foi, então, submetida a testes de ecotoxicidade e, em seguida, o efluente foi tratado pelo processo de fotoeletrooxidação (FEO). A influência da densidade de corrente e o tempo de tratamento foram avaliados. Foi verificada uma redução de carbono orgânico total superior a 38%. Os ensaios de ecotoxicidade para o efluente tratado por fotoeletroxidação indicaram que a FEO degradou parcialmente os aditivos orgânicos e reduziu a concentração que provoca efeitos tóxicos para os organismos teste.

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Descritores: Clorófitas/efeitos dos fármacos
Cyprinidae/metabolismo
Daphnia/efeitos dos fármacos
Eliminação de Resíduos Líquidos/métodos
Águas Residuais/toxicidade
Poluentes Químicos da Água/toxicidade
-Eletrólise
Galvanoplastia
Níquel/química
Oxirredução
Fotólise
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Texto completo SciELO Costa Rica
Texto completo
Id: lil-753695
Autor: Domínguez-Castanedo, Omar; Toledano-Olivares, Ángel; Martínez-Espinosa, David; Ávalos-Rodríguez, Alejandro.
Título: Cambios morfológicos en gametos del barbo tigre Puntius tetrazona (Cypriniformes: Cyprinidae) e implementación de la fertilización in vitro / Morphological changes in gametes of tiger barb Puntius tetrazona (Cypriniformes: Cyprinidae) and the implementation of in vitro fertilization
Fonte: Rev. biol. trop;62(4):1353-1363, oct.-dic. 2014. ilus, graf, mapas.
Idioma: es.
Resumo: The production of ornamental fishes represents an economic activity of a growing number of Mexican families. Nevertheless, the reproduction of fish in captivity is one of the complications faced by farmers. This study was set up to: (i) evaluate the morphological and functional changes induced by hydration in the gametes of fish tiger barb (Puntius tetrazona; 240 samples) at tree times after hydration (10, 20 and 30s) with classic spermograms (volume, sperm concentration, viability, motility, and normal morphology); and (ii) evaluate the implementation of in vitro fertilization based on the ovulation rate, the percentage of fertilization and hatching, and the larval numbers obtained after 72 hours. The average volume of milt was 3.0±0.7μL, and the minimum, maximum and average concentration of sperm was 44.4x10(6) spz/mL, 52.3x10(6)spz/mL, and 48.1±5.9x10(6)spz/mL, respectively. The viability and motility of the sperm was 84.6±3.2% and 81.5±2.2%, respectively. The diameter of the sperm with/without water contact was 2.1±0.6μm and 3.8±1.0μm (p<0.05); the largest diameter was recorded 30 seconds after the contact with water. For oocytes, the smaller and larger diameters were recorded at 10 and 30s, respectively (both with/without water contact); the oocytes diameters after 10 and 30 seconds of contact with water were 1.11 and 1.55mm, respectively. A higher ovulation rate was recorded using the in vitro fertilization: 250±50 oocytes versus 28±09 oocytes (during natural fertilization; p<0.05). Nevertheless, fertilization and hatching rates were higher for the natural fertilization (80 and 60%, respectively). Considering the number of larvae obtained after 72 hours, our results showed a higher value for the in vitro fertilization (75±18 compared to 13.4±12 of the natural fertilization; p<0.05). We propose this fish as a model for other ornamental fishes of commercial interest. Our results demonstrate that the in vitro fertilization is a very high viable option to optimize and maximize resources; besides, the reproduction management optimization under controlled conditions may enhance wild fish stocks preservation. Rev. Biol. Trop. 62 (4): 1353-1363. Epub 2014 December 01.

El objetivo del presente estudio fue conocer las características de los gametos de Puntius tetrazona (n=240), los cambios morfológicos a partir de su activación mediante espermogramas cásicos y por otro lado, se evaluó la implementación de la fertilización in vitro a partir de la tasa ovulatoria, el % de fertilización y eclosión y el número de larvas vivas a las 72h. El volumen promedio de semen fue de 3.0±0.7µL. La concentración espermática mínima, máxima y promedio fue 44.48x10(6)spz/mL, 52.3x10(6)spz/mL y 48.1±5.9x10(6)spz/mL, respectivamente. La viabilidad promedio fue de 84.68±3.27%. La motilidad promedio fue 81.53±2.28%. El diámetro de los espermatozoides fluctuó entre 2.16±0.2 y 2.79±0.3µm; 3.84±0.3 y 4.86±0.31µm sin y con contacto con el agua respectivamente, con diferencias significativas. El diámetro mayor fue a los 30s en contacto con el agua. Los ovocitos de menor y mayor diámetro se registraron a los diez y 30s sin y con contacto con el agua respectivamente. Los diámetros de los ovocitos en diez y 30s en contacto con el agua fluctuaron entre 1.11 y 1.55mm respectivamente. La mayor tasa ovulatoria fue en la fertilización in vitro con 250±50 ovocitos frente a 28±09 de la natural, con diferencias significativas. Los porcentajes de fertilización y eclosión fueron más elevados en la fertilización natural con 80% y 60% respectivamente. Se registraron 75±18 larvas a las 72 horas en el grupo in vitro comparado con 13.4±12 larvas de la fertilización natural. Con lo anterior, la técnica que permitió mayor cantidad de larvas fue la de fertilización in vitro.
Descritores: Aquicultura/métodos
Cyprinidae/fisiologia
Fertilização In Vitro/veterinária
Interações Espermatozoide-Óvulo/fisiologia
-Cyprinidae/classificação
Oócitos/fisiologia
Motilidade Espermática/fisiologia
Espermatozoides/fisiologia
Limites: Animais
Feminino
Masculino
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


  3 / 9 LILACS  
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Texto completo SciELO Brasil
Martins, Marilaine
Texto completo
Id: lil-748361
Autor: Martins, Marilaine; Lacerda, Marcus Vinícius Guimarães; Monteiro, Wuelton Marcelo; Moura, Marco Antonio Saboia; Santos, Eyde Cristianne Saraiva; Saraceni, Valéria; Saraiva, Maria Graças Gomes.
Título: Progression of the load of waterborne and intestinal parasitic diseases in the State of Amazonas
Fonte: Rev. Soc. Bras. Med. Trop;48(supl.1):42-54, 2015. tab, graf.
Idioma: en.
Resumo: In the State of Amazonas, Brazil, urban expansion together with precarious basic sanitation conditions and human settlement on river banks has contributed to the persistence of waterborne and intestinal parasitic diseases. Time series of the recorded cases of cholera, typhoid fever, hepatitis A and leptospirosis are described, using data from different levels of the surveillance systems. The sources for intestinal parasitosis prevalence data (non-compulsory reporting in Brazil) were Medical Literature Analysis and Retrieval System Online (MEDLINE), Literatura Latino-Americana (LILACS) and the annals of major scientific meetings. Relevant papers and abstracts in all languages were accessed by two independent reviewers. The references cited by each relevant paper were scrutinized to locate additional papers. Despite its initial dissemination across the entire State of Amazonas, cholera was controlled in 1998. The magnitude of typhoid fever has decreased; however, a pattern characterized by eventual outbreaks still remains. Leptospirosis is an increasing cause of concern in association with the annual floods. The overall prevalence of intestinal parasites is high regardless of the municipality and the characteristics of areas and populations. The incidence of hepatitis A has decreased over the past decade. A comparison of older and recent surveys shows that the prevalence of intestinal parasitic diseases has remained constant. The load of waterborne and intestinal parasitic diseases ranks high among the health problems present in the State of Amazonas. Interventions aiming at basic sanitation and vaccination for hepatitis A were formulated and implemented, but assessment of their effectiveness in the targeted populations is still needed.
Descritores: Adaptação Fisiológica/genética
Relógios Biológicos/genética
Proteínas CLOCK/genética
Ritmo Circadiano/genética
Cyprinidae/genética
-Sequência de Aminoácidos
Sequência de Bases
Evolução Biológica
Mudança Climática
Evolução Molecular
Variação Genética
Dados de Sequência Molecular
Filogenia
Estações do Ano
Análise de Sequência de DNA
Limites: Animais
Tipo de Publ: Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.
Responsável: BR1.1 - BIREME


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Texto completo SciELO Costa Rica
Texto completo
Id: lil-715420
Autor: Ahmad Mir, Farooq; Iqbal Mir, Javaid; Chandra, Suresh.
Título: Detection of morphometric differentiation in Sattar snowtrout, Schizothorax curvifrons (Cypriniformes: Cyprinidae) from Kashmir Himalaya using a truss network system
Fonte: Rev. biol. trop;62(1):132-141, ene.-mar. 2014. ilus, graf, tab.
Idioma: en.
Resumo: Schizothorax curvifrons is a morphometrically and meristically most variable and economically valuable promising fish food from Kashmir Valley. Since there is a lack of information on stock structure of wild populations on this species, this study was aimed to investigate the intraspecific variation of this important snowtrout. For this, two rivers and one lake in Kashmir Himalaya were sampled from January 2011 to October 2012. Fish body measurements were taken and morphometric characters using the truss network system was constructed. Altogether, 506 fish specimens were collected. Data were subjected to principal component analysis, discriminant function analysis and univariate analysis of variance. The first principal component explained 63.44% of total variation, while second and third components explained 8.34% and 5.31%, respectively. The step-wise discriminant function analysis retained two variables that significantly discriminated the populations. Using these variables 83.4% of the original specimens were classified into their correct groups and 81.1% of the cross-validated (leave one out procedure) specimens were classified into their correct groups. All of the total 31 transformed truss measurements exhibited highly significant (p<0.001) differences between the populations. This represents the first attempt on stock structure of S. curvifrons; therefore, this study will hopefully guide fisheries taxonomists about its current stock structure and would help in its management and conservation programme across Kashmir Himalaya area.

Schizothorax curvifrons es un alimento para peces, morfométricamente y merísticamente más variable y de mayor valor económico del Valle de Kashmir. Dado que existe una falta de información sobre la estructura de las poblaciones silvestres de esta especie, este estudio tuvo como objetivo investigar la variación intraespecífica de esta importante trucha de nieve. Para ello, se tomaron muestras de dos ríos y un lago en Kashmir Himalaya, de enero 2011 a octubre 2012. Con las mediciones de los peces se construyó una red truss. En total, se recolectaron 506 muestras de peces. Los datos se sometieron a análisis de componentes principales, análisis de función discriminante y el análisis univariante de la varianza. El primer componente principal explicó 63.44% de la variación total, mientras que los componentes segundo y tercero explicaron el 8.34% y 5.31%, respectivamente. El análisis discriminante por etapas, retuvo dos variables que discriminaron significativamente las poblaciones. El uso de estas variables de 83.4% de los especímenes originales se clasificaron en sus grupos correctos y 81.1% de la validación cruzada (deja fuera un procedimiento) especímenes fueron clasificados en sus grupos correctos. Todas las mediciones para entramados transformados, del total de 31, mostraron diferencias altamente significativas (p<0.001) entre las poblaciones. Esto representa el primer intento de obtener la estructura de la población de S. curvifrons, por lo tanto, este estudio espera orientar a los taxonomistas de peces acerca de la estructura de la población actual y ayudar en su manejo y poder establecer un programa de conservación en el área de Kashmir Himalaya.
Descritores: Cyprinidae/anatomia & histologia
Cyprinidae/classificação
-Biometria/métodos
Análise Discriminante
Índia
Análise de Componente Principal
Rios
Limites: Animais
Feminino
Masculino
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


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Texto completo SciELO Brasil
Texto completo
Id: lil-709483
Autor: Rabiey, Soghra; Hosseini, Hedayat; Rezaei, Masoud.
Título: Use Carum copticum essential oil for controlling the Listeria monocytogenes growth in fish model system
Fonte: Braz. j. microbiol;45(1):89-96, 2014. ilus, tab.
Idioma: en.
Resumo: This study was conducted to evaluate the antibacterial effect of Carum copticum essential oil (Ajowan EO) against Listeria monocytogenes in fish model system. Ajowan EO chemical composition was determined by gas chromatography/mass spectral analysis and the highest concentration of Carum copticum essential oil without any significant changes on sensory properties of kutum fish (Rutilus frisii kutum) was assigned. Then the inhibitory effect of Ajowan EO at different concentrations in presence of salt and smoke component was tested on L. monocytogenes growth in fish peptone broth (FPB), kutum broth and cold smoked kutum broth at 4 ºC for 12 days. Ajowan EO completely decreased the number of L. monocytogenes in FPB after 12 days of storage, however, antimicrobial effect of EO significantly reduced in kutum and cold smoked kutum broth. Addition of 4% NaCl and smoke component improved the anti-listerial activity of Ajowan EO in all fish model broths.
Descritores: Antibacterianos/farmacologia
Carum/química
Doenças dos Peixes/tratamento farmacológico
Doenças dos Peixes/microbiologia
Listeria monocytogenes/efeitos dos fármacos
Listeriose/veterinária
Óleos Voláteis/farmacologia
-Antibacterianos/química
Antibacterianos/isolamento & purificação
Contagem de Colônia Microbiana
Meios de Cultura/química
Cyprinidae/microbiologia
Cromatografia Gasosa-Espectrometria de Massas
Listeriose/tratamento farmacológico
Listeriose/microbiologia
Viabilidade Microbiana/efeitos dos fármacos
Óleos Voláteis/química
Óleos Voláteis/isolamento & purificação
Cloreto de Sódio/metabolismo
Temperatura Ambiente
Limites: Animais
Responsável: BR1.1 - BIREME


  6 / 9 LILACS  
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Texto completo SciELO Costa Rica
Texto completo
Id: lil-637712
Autor: Trujillo-Jiménez, Patricia; Castro-Lara, Miguel Ángel.
Título: Dieta de la carpa Notropis moralesi (Pisces: Cyprinidae) en el río Amacuzac, Morelos, México
Fonte: Rev. biol. trop;57(1/2):195-209, March-June 2009. tab.
Idioma: es.
Resumo: Diet of the chub, Notropis moralesi (Pisces: Cyprinidae) in the Amacuzac River, Morelos, Mexico. Notropis moralesi, locally known as "carpa tepelneme", is a small endemic fish of the Papaloapan River. We analyzed its diet and feeding habits. Specimens were captured monthly from Amacuzac, River, Morelos, Mexico. The gut content of 294 specimens was identified to the most specific taxonomic category possible. We quantified gut content by the numerical and frequency of occurrence methods and used the Levin's amplitude of trophic niche indices and MacArthur and Levin`s indices for niche overlaping. The N. moralesi diet was composed by eleven prey categories, ten of which were of animal item. Chironomids and mayfly were the most consumed prey, independently of season and fish sex or size. We found ten nutritional components in the dry season, and eight in the rainy season. The estimated amplitude of trophic niche (Levin's method) revealed high values in both seasons. The diet had ten nutritional components in immatures, eight in females and five in males. A Chi-squared test showed not significant differences in the diet by development stage, sex, and season. The niche overlaping index was high (above 0.60) for all analyses. N. moralesi is a carnivorous species with entomophagus tendencies. Rev. Biol. Trop. 57 (1-2): 195-209. Epub 2009 June 30.

Notropis moralesi, conocido comúnmente como "carpa tepelneme", es un pez endémico del río Papaloapan. Se analizó su dieta y hábitos alimentarios. Se tomaron muestras mensuales en el río Amacuzac, Morelos, México. La identificación del contenido estomacal (294 ejemplares) se llevó hasta el taxon más específico posible. Para la cuantificación se utilizaron los métodos numérico (No) y frecuencia de aparición (F.O.). Se utilizó el índice de amplitud de nicho trófico de Levin y el índice de traslape de MacArthur y Levin. N. moralesi presentó la ingestión de once componentes alimenticios, de los cuales diez son de origen animal y uno vegetal. Los quironómidos y efemerópteros fueron los más consumidos independientemente del sexo, talla y época del año. El análisis por épocas del año, reportó diez componentes en el estiaje y ocho en las lluvias. La dieta de los inmaduros estuvo constituida por diez componentes, la de las hembras por ocho y el de los machos por cinco. La prueba de Ji-cuadrada reveló que no existen diferencias significativas entre las dietas por estadio de desarrollo, sexos y épocas del año. El traslape de los nichos tróficos, reveló valores superiores a 0.60 en todas las combinaciones por sexos y épocas del año. N. moralesi es una especie carnívora con tendencias insectívoras y presenta hábitos alimentarios de tipo bentófago.
Descritores: Cyprinidae/fisiologia
Comportamento Alimentar/fisiologia
-Cyprinidae/classificação
Conteúdo Gastrointestinal
México
Rios
Estações do Ano
Fatores Sexuais
Limites: Animais
Feminino
Masculino
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


  7 / 9 LILACS  
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Texto completo SciELO Costa Rica
Texto completo
Id: lil-637708
Autor: Solak, Kemal; Alas, Ali; Yilmaz, Muhittin; Öktener, Ahmet.
Título: Biometry of the fishes Barbus plebejus and Barbus capito from Coruh Basin, Turkey
Fonte: Rev. biol. trop;57(1/2):159-165, March-June 2009. ilus, mapas, tab.
Idioma: en.
Resumo: Metric and meristic characters are important to identify fish species and their habitat peculiarities. There are many species that belong to the fish genus Barbus, which is found in tropical and extratropical regions, but there are few studies covering the Coruh basin. Two subspecies of Barbus were found in the Coruh River system of Eastern Anatolia, Turkey: Barbus plebejus escherichi and Barbus capito capito. We collected specimens in seven localities for measurement. The number of vertebra were determined radiographically. Some specimens of B. capito capito have a sharper snout in the segments of Coruh where the water flows faster, suggesting a modification related to current. The biometric measurements vary geographically and could be related to abiotic and biotic factors in the habitat. Rev. Biol. Trop. 57 (1-2): 159-165. Epub 2009 June 30.
Descritores: Cyprinidae/anatomia & histologia
Cyprinidae/classificação
Ecossistema
-Biometria
Rios
Turquia
Limites: Animais
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


  8 / 9 LILACS  
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Texto completo SciELO Brasil
Texto completo
Id: lil-595979
Autor: Boto, Luis; Cunha, Carina; Doadrio, Ignacio.
Título: A polymorphic microsatellite from the Squalius alburnoides complex (Osteichthyes, Cyprinidae) cloned by serendipity can be useful in genetic analysis of polyploids
Fonte: Genet. mol. biol;34(3):524-528, 2011. tab.
Idioma: en.
Resumo: A new microsatellite locus (SAS1) for Squalius alburnoides was obtained through cloning by serendipity. The possible usefulness of this new species-specific microsatellite in genetic studies of this hybrid-species complex, was explored. The polymorphism exhibited by SAS1 microsatellite is an important addition to the set of microsatellites previously used in genetic studies in S. alburnoides complex, that mostly relied in markers described for other species. Moreover, the SAS1 microsatellite could be used to identify the parental genomes of the complex, complementing other methods recently described for the same purpose.
Descritores: Cyprinidae/genética
Repetições de Microssatélites
Poliploidia
-Clonagem Molecular
DNA Mitocondrial
Hibridização Genética
Polimorfismo Genético
Limites: Animais
Responsável: BR1.1 - BIREME


  9 / 9 LILACS  
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Texto completo SciELO Brasil
Texto completo
Id: lil-282840
Autor: Willis, Monte S.
Título: Population biology of Allocreadium lobatum Wallin, 1909 (Digenea: Allocreadiidae) in the creek chub, Semotilus atromaculatus, mitchill (Osteichthyes: Cyprinadae), in a Nebraska Creek, USA
Fonte: Mem. Inst. Oswaldo Cruz;96(3):331-338, Apr. 2001. graf, tab.
Idioma: en.
Resumo: Allocreadium lobatum Wallin, 1909 has been reported in cyprinid species of freshwater fish in Canada and in the United States. The population biology of A. lobatum in the host Semotilus atromaculatus Mitchill was studied from May through December 1991, in a USA creek. Overall prevalence (64 percent) and mean intensity (4.4 + or - 0.4) were greater than previously reported while abundance, reported for the first time, was 2.8 + or - 0.3. Several trends in A. lobatum population biology as a function of S. atromaculatus length were identified. Mean intensity and abundance of A. lobatum increased with host size and significant differences in prevalence and A. lobatum lengths were found to correlate with host lengths
Descritores: Cyprinidae/parasitologia
Doenças dos Peixes/parasitologia
-Doenças dos Peixes/epidemiologia
Água Doce
Prevalência
Estações do Ano
Estatísticas não Paramétricas
Estados Unidos/epidemiologia
Limites: Animais
Responsável: BR1.1 - BIREME



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