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Referências encontradas : 21 [refinar]
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  1 / 21 LILACS  
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Texto completo
Id: biblio-886878
Autor: SPINELLI, GUSTAVO R; RONDEROS, MARÍA M; DONATO, MARIANO; SIRI, AUGUSTO.
Título: Yungahelea, a new genus of predaceous midge from northwestern Argentina (Culicomorpha: Ceratopogonidae)
Fonte: An. acad. bras. ciênc;90(1):137-146, Mar. 2018. tab, graf.
Idioma: en.
Resumo: ABSTRACT A new monotypic genus and species of predaceous midge from the southernmost area of the Argentinean Yungas, Yungahelea australis Spinelli and Ronderos, is described and illustrated from male and female adults. It belongs to a group containing the Ceratopogonini genera Parabezzia Malloch, Diaphanobezzia Ingram and Macfie, Spinellihelea Borkent, Grogan and Picado, Leptohelea Wirth and Blanton, and Fittkauhelea Wirth and Blanton. Phylogenetic interpretation indicates that Yungahelea is the sister group of Spinellihelea or the clade composed by Parabezzia and Diaphanobezzia.
Descritores: Ceratopogonidae/anatomia & histologia
Ceratopogonidae/classificação
Ceratopogonidae/genética
-Filogenia
Argentina
Estruturas Animais/anatomia & histologia
Tamanho Corporal
Limites: Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


  2 / 21 LILACS  
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Id: biblio-886892
Autor: ROCHA, ISABELA C; DUMAS, LEANDRO L; SOUZA, WAGNER R M.
Título: Two new species and updated checklist of Oxyethira Eaton, 1873 (Trichoptera, Hydroptilidae) from Brazil
Fonte: An. acad. bras. ciênc;90(1):147-154, Mar. 2018. tab, graf.
Idioma: en.
Resumo: ABSTRACT Two new species of Oxyethira Eaton, 1873 are described: Oxyethira cascadanta sp. n. and Oxyethira quadrilobata sp. n. Description and illustrations of the new species are provided based on specimens collected in Parque Nacional da Serra da Canastra, Minas Gerais State, Southeast Brazil. Both species are assigned to the subgenus Loxotrichia but differ from other species mainly in morphology of the subgenital plate, subgenital processes and inferior appendages. Additionally, we provide an updated checklist of the Oxyethira species from Brazil.
Descritores: Lista de Checagem/normas
Insetos/anatomia & histologia
Insetos/classificação
-Especificidade da Espécie
Brasil
Fatores Sexuais
Fatores Etários
Caracteres Sexuais
Estruturas Animais
Distribuição Animal
Limites: Animais
Masculino
Feminino
Responsável: BR1.1 - BIREME


  3 / 21 LILACS  
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Id: biblio-886883
Autor: RANGEL, BIANCA S; WOSNICK, NATASCHA; AMORIM, ALBERTO F; K JUNIOR, JOSÉ ROBERTO; RICI, ROSE E G.
Título: Microscopic aspects of electrosensory system on the partially euryhaline lesser guitarfish
Fonte: An. acad. bras. ciênc;90(1):37-39, Mar. 2018. graf.
Idioma: en.
Resumo: ABSTRACT The electrosensory system on elasmobranchs consists of subcutaneous electroreceptor organs known as ampullae of Lorenzini. The present study investigated the ampullae of Lorenzini morphology of the lesser guitarfish Zapteryx brevirostris, using light microscopy and scanning electron microscopy. The pore number found in the ventral skin surface is much higher than that found in the dorsal portion, characteristic of species that inhabit the euphotic zone. Under light microscopy it was possible to observe that the wall canal consists of a single layer of squamous epithelial cells. The canal features distal expansion, where the ampullae are located with up to six alveoli. The sensory epithelium of ampullae is composed by cubic cells, with oval nucleus, restricted to the interior of the alveoli. With analysis the clusters under scanning electron microscopy, it was possible to observe the structure and the random arrangement of individual ampullae, canals and nerves. The distribution of dorsal and ventral pores and ampullae in Z. brevirostris resembled those of the same family. The number of alveoli per ampullae was similar to that found in euryhaline elasmobranchs species, suggesting that the morphological organization in Z. brevirostris is linked to its possible evolutionary transitory position among batoids.
Descritores: Órgãos dos Sentidos/ultraestrutura
Rajidae/anatomia & histologia
Estruturas Animais/ultraestrutura
Fenômenos Eletrofisiológicos/fisiologia
-Sensação/fisiologia
Órgãos dos Sentidos/fisiologia
Especificidade da Espécie
Rajidae/fisiologia
Microscopia Eletrônica de Varredura
Estruturas Animais/fisiologia
Limites: Animais
Responsável: BR1.1 - BIREME


  4 / 21 LILACS  
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Texto completo SciELO Costa Rica
Texto completo
Id: lil-778078
Autor: Mattos, Ingrid; Mermudes, José Ricardo Miras; Reyes-Castillo, Pedro.
Título: Larval structure of Passalus gravelyiand sexual dimorphism in Passalid larvae / Estructura larval de Passalus gravelyi y dimorfismo sexual en larvas de Passalidae
Fonte: Rev. biol. trop;63(3):695-704, jul.-sep. 2015. tab, ilus.
Idioma: en.
Resumo: The adults and larvae of Passalidae are subsocial insects commonly found in tropical forests, living in decaying wood gallery systems constructed by adults. Currently, few repots on the larvae of Neotropical Passalidae have been published and information is scarce. In this study, the Passalus (Pertinax) gravelyiMoreira, 1922 larvae is described for the first time, based on ten larval specimens 1 (1° instar), 4 (2° instar), and 5 (3° instar) associated with three adults collected from a single colony at the Parque Nacional do Itatiaia (Itatiaia, Rio de Janeiro, Brazil). The description was carried out based on electronic and digital photographs of diagnostic structures, with some details on the systematic of the species. The larvae of Passalus gravelyihas the general setal 'Pertinax' pattern and differed from others by 16 to 18 setae on the anal ring, the other larvae data from Brazilian species show the anal ring with 10 to 12 setae. A discussion on the presence of sexual dimorphism in 62 species of two and three instars of Passalidae larvae is provided for the first time. Besides, a description of the terminal ampullapresent as a cuticular structure found in the medial-ventral area of the 9th abdominal sternite in males is also given. The terminal ampullawas only observed in the Passalidae male larvae and was not visible in female larvae. The terminal ampullaare acknowledged now in males of 64 passalid species, that are taxonomically distributed in world tropical forests, at the Oriental and Australian subfamily Aulacocyclinae (Aulacocyclini & Ceracupini) and the cosmotropical subfamily Passalinae (Solenocyclini, Macrolinini, Passalini, & Proculini).

Passalidae son insectos subsociales, los adultos y larvas son comunes en bosques tropicales, viven dentro de troncos podridos en un sistema de galerías construido por los adultos. A la fecha, pocos estudios han sido publicados sobre larvas de Passalidae neotropicales. En el presente trabajo, se describe por primera vez la larva de Passalus (Pertinax) gravelyiMoreira, 1922, con base en 10 especímenes: uno de primer estadio, cuatro de segundo estadio y cinco de tercer estadio, asociados con tres adultos de un grupo familiar recolectado en el Parque Nacional de Itatiaia (Río de Janeiro, Brasil). La descripción esta fundamentada en microfotografías electrónicas y digitales de los caracteres diagnósticos que muestran detalles sobre la sistemática de la especie. La larva de Passalus gravelyimuestra el patrón setal general de 'Pertinax' y difiere de otras larvas del sub&género Pertinaxpor tener el anillo anal con 16 a 18 setas, las seis especies de larvas descritas del Brasil tienen en el anillo anal con 10 a 12 setas. Por primera vez se discute la presencia de dimorfismo sexual en larvas de 62 especies de Passalidae, describiendo el ampulla terminalpresente en el macho y localizada en el área cuticular media ventral del noveno esternito abdominal. El ampulla terminales visible ventralmente solo en la larva macho y no es visible en la larva hembra; esta estructura cuticular es común en el macho sobre el noveno esternito abdominal del segundo y tercer estadio larval y no está presente en la larva de primer estadio. El ampulla terminales conocida en 62 especies agrupadas taxonómicamente en la subfamilia oriental y australiana Aulacocyclinae (Aulacocyclini e Ceracupini) y en la subfamilia cosmotropical Passalinae (Solenocyclini, Macrolinini, Passalini, e Proculini).
Descritores: Besouros/anatomia & histologia
Besouros/classificação
Larva/anatomia & histologia
Larva/classificação
Caracteres Sexuais
-Estruturas Animais/anatomia & histologia
Brasil
Limites: Animais
Feminino
Masculino
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


  5 / 21 LILACS  
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Malaquias, Luiz Cosme Cotta
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Id: lil-775122
Autor: Drumond, Betania Paiva; Fagundes, Luiz Gustavo da Silva; Rocha, Raissa Prado; Fumagalli, Marcilio Jorge; Araki, Carlos Shigueru; Colombo, Tatiana Elisa; Nogueira, Mauricio Lacerda; Castilho, Thiago Elias; Silveira, Nelson José Freitas da; Malaquias, Luiz Cosme Cotta; Coelho, Luiz Felipe Leomil.
Título: Phylogenetic analysis of Dengue virus 1 isolated from South Minas Gerais, Brazil
Fonte: Braz. j. microbiol;47(1):251-258, Jan.-Mar. 2016. tab, graf.
Idioma: en.
Projeto: National Counsel of Technological and Scientific Development (CNPq).
Resumo: Abstract Dengue is a major worldwide public health problem, especially in the tropical and subtropical regions of the world. Primary infection with a single Dengue virus serotype causes a mild, self-limiting febrile illness called dengue fever. However, a subset of patients who experience secondary infection with a different serotype can progress to a more severe form of the disease, called dengue hemorrhagic fever. The four Dengue virus serotypes (1–4) are antigenically and genetically distinct and each serotype is composed of multiple genotypes. In this study we isolated one Dengue virus 1 serotype, named BR/Alfenas/2012, from a patient with dengue hemorrhagic fever in Alfenas, South Minas Gerais, Brazil and molecular identification was performed based on the analysis of NS5 gene. Swiss mice were infected with this isolate to verify its potential to induce histopathological alterations characteristic of dengue. Liver histopathological analysis of infected animals showed the presence of inflammatory infiltrates, hepatic steatosis, as well as edema, hemorrhage and necrosis focal points. Phylogenetic and evolutionary analyses based on the envelope gene provided evidence that the isolate BR/Alfenas/2012 belongs to genotype V, lineage I and it is probably derived from isolates of Rio de Janeiro, Brazil. The isolate BR/Alfenas/2012 showed two unique amino acids substitutions (SER222THRE and PHE306SER) when compared to other Brazilian isolates from the same genotype/lineage. Molecular models were generated for the envelope protein indicating that the amino acid alteration PHE 306 SER could contribute to a different folding in this region located within the domain III. Further genetic and animal model studies using BR/Alfenas/2012 and other isolates belonging to the same lineage/genotype could help determine the relation of these genetic alterations and dengue hemorrhagic fever in a susceptible population.
Descritores: Vírus da Dengue/classificação
Vírus da Dengue/genética
Dengue/virologia
Variação Genética
Genótipo
Filogenia
-Substituição de Aminoácidos
Estruturas Animais/patologia
Brasil
Modelos Animais de Doenças
Vírus da Dengue/isolamento & purificação
Produtos do Gene env/química
Produtos do Gene env/genética
Histocitoquímica
Microscopia
Modelos Moleculares
Mutação Puntual
Conformação Proteica
Proteínas não Estruturais Virais/genética
Limites: Animais
Humanos
Camundongos
Responsável: BR1.1 - BIREME


  6 / 21 LILACS  
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Id: lil-775108
Autor: Carrasco, Adriano de Oliveira Torres; Seki, Meire Christina; Benevenute, Jyan Lucas; Ikeda, Priscila; Pinto, Aramis Augusto.
Título: Experimental infection with Brazilian Newcastle disease virus strain in pigeons and chickens
Fonte: Braz. j. microbiol;47(1):231-242, Jan.-Mar. 2016. tab.
Idioma: en.
Resumo: Abstract This study was designed with the goal of adding as much information as possible about the role of pigeons (Columba livia) and chickens (Gallus gallus) in Newcastle disease virus epidemiology. These species were submitted to direct experimental infection with Newcastle disease virus to evaluate interspecies transmission and virus-host relationships. The results obtained in four experimental models were analyzed by hemagglutination inhibition and reverse transcriptase polymerase chain reaction for detection of virus shedding. These techniques revealed that both avian species, when previously immunized with a low pathogenic Newcastle disease virus strain (LaSota), developed high antibody titers that significantly reduced virus shedding after infection with a highly pathogenic Newcastle disease virus strain (São Joao do Meriti) and that, in chickens, prevent clinical signs. Infected pigeons shed the pathogenic strain, which was not detected in sentinel chickens or control birds. When the presence of Newcastle disease virus was analyzed in tissue samples by RT-PCR, in both species, the virus was most frequently found in the spleen. The vaccination regimen can prevent clinical disease in chickens and reduce viral shedding by chickens or pigeons. Biosecurity measures associated with vaccination programs are crucial to maintain a virulent Newcastle disease virus-free status in industrial poultry in Brazil.
Descritores: Doença de Newcastle/patologia
Doença de Newcastle/virologia
Vírus da Doença de Newcastle/crescimento & desenvolvimento
-Estruturas Animais/virologia
Anticorpos Antivirais/sangue
Brasil
Galinhas
Columbidae
Modelos Animais de Doenças
Transmissão de Doença Infecciosa
Testes de Inibição da Hemaglutinação
Interações Hospedeiro-Patógeno
Doença de Newcastle/imunologia
Doença de Newcastle/transmissão
Vírus da Doença de Newcastle/imunologia
Reação em Cadeia da Polimerase Via Transcriptase Reversa
Eliminação de Partículas Virais
Limites: Animais
Responsável: BR1.1 - BIREME


  7 / 21 LILACS  
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Borges, Ligia Miranda Ferreira
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Id: lil-688721
Autor: Sousa, Lorena Alessandra Dias de; Rocha, Thiago Lopes; Saboia-Morais, Simone Maria Teixeira; Borges, Ligia Miranda Ferreira.
Título: Ovary histology and quantification of hemolymph proteins of Rhipicephalus (Boophilus) microplus treated with Melia azedarach / Histologia do ovário e quantificação de proteínas na hemolinfa de Rhipicephalus (Boophilus) microplus tratado com Melia azedarach
Fonte: Rev. bras. parasitol. vet;22(3):339-345, Jul-Sep/2013. tab, graf.
Idioma: en.
Resumo: This study aimed to analyze ovary histology and quantify total protein in the hemolymph of Rhipicephalus (Boophilus) microplus females treated with hexane extracts from green fruits of Melia azedarach. Eight engorged females were immersed in the extract at 0.25% concentration, and eight in water containing 5% acetone (control). The females were dissected 72 hours after treatment, and the ovaries were weighed and subjected to standard histological techniques. The total protein concentration was measured in the hemolymph of 200 females, of which 100 were treated as described above and 100 served as a control. In the treated group, ovary weight reduction and predominance of immature oocytes were observed. In addition, there were decreases in the diameters of the cytoplasm and germ vesicle of the oocytes in the treated group, compared with the controls. The protein concentration in the hemolymph was higher in the treated group than in the controls. The morphological changes observed in the treated ovaries included: presence of vacuolization; alteration of oocyte morphology, which changed from rounded to elongated; deformation of the chorion; and disorganization of the yolk granules. These results demonstrate the action of M. azedarach fruit extracts on R. (B.) microplus oogenesis.

Este estudo foi desenvolvido, visando analisar a histologia do ovário e quantificar as proteínas totais na hemolinfa de fêmeas de Rhipicephalus (Boophilus) microplus tratadas com extrato hexânico de frutos verdes de Melia azedarach. Oito fêmeas ingurgitadas foram tratadas por imersão com o extrato na concentração de 0,25%, e oito com água contendo 5% de acetona (controle). As fêmeas foram dissecadas 72 horas após o tratamento e os ovários foram pesados e submetidos a técnicas histológicas padrões. A concentração total de proteína foi mensurada na hemolinfa de 200 fêmeas, sendo 100 tratadas como descrito anteriormente e 100 como controle. Foi observada redução do peso dos ovários, predomínio de ovócitos imaturos e houve diminuição nos diâmetros do citoplasma e da vesícula germinal dos ovócitos do grupo tratado em comparação ao controle. A concentração de proteína na hemolinfa foi mais alta no grupo tratado que no controle. As alterações morfológicas observadas nos ovários tratados foram a presença de vacuolizações, alteração da morfologia dos ovócitos que mudaram de redondos para alongados, deformação do córion e desorganização dos grânulos de vitelo. Estes resultados demonstram a ação do extrato de M. azedarach na ovogênese de R. (B.) microplus.
Descritores: Estruturas Animais/anatomia & histologia
Hemolinfa/química
Melia azedarach
Ovário/anatomia & histologia
Extratos Vegetais/farmacologia
Proteínas/análise
Rhipicephalus/anatomia & histologia
Rhipicephalus/metabolismo
-Frutas
Limites: Animais
Feminino
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


  8 / 21 LILACS  
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Id: lil-606794
Autor: Cutolo, André Antonio; Von Zuben, Claudio José; Galati, Eunice Aparecida Bianchi.
Título: Anomalia bilateral no gonóstilo de Sciopemyia sordellii (Shannon & Del Ponte) (Diptera, Psychodidae) / Bilateral anomaly in the style of Sciopemyia sordellii (Shannon & Del Ponte) (Diptera, Psychodidae)
Fonte: Rev. bras. parasitol. vet;18(3):67-69, July-Sept. 2009. ilus.
Idioma: pt.
Resumo: Relata-se o encontro de um exemplar macho da espécie Sciopemyia sordellii (Shannon & Del Ponte, 1927) com uma rara anomalia, apresentando oito espinhos em um gonóstilo e cinco no outro. Para essa espécie, o número de espinhos normalmente esperado em cada gonóstilo é quatro. O espécime foi capturado por meio de armadilha luminosa automática do tipo CDC, em área de mata da Floresta Estadual Edmundo Navarro de Andrade, em maio de 2004, no município de Rio Claro, Estado de São Paulo. Anomalia semelhante já foi relatada nessa espécie, sendo pela primeira vez encontrada bilateralmente. Tais achados podem causar confusão na identificação específica e levar à descrição de novas espécies, aumentando a lista de sinonímias do grupo.

This paper presents a male specimen of Sciopemyia sordellii with a rare bilateral anomaly, consisting in eight spines in a style and five in the other. This species has four spines in each style as its normal number. The specimen was captured using a CDC light trap, in a forested area in the State Park "Floresta Estadual Edmundo Navarro de Andrade", in May 2004, located in the city of Rio Claro, São Paulo State, Brazil. Similar anomaly was once described but this is the first specimen found with a bilateral alteration. It may cause confusion in taxonomic identification and even lead to description of new species, increasing the number of synonymies.
Descritores: Estruturas Animais/anormalidades
Psychodidae/anatomia & histologia
Limites: Animais
Masculino
Responsável: BR1.1 - BIREME


  9 / 21 LILACS  
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Texto completo SciELO Brasil
Texto completo
Id: lil-578836
Autor: Arbulo, N; Santos, E; Salvarrey, S; Invernizzi, C.
Título: Proboscis Length and Resource Utilization in Two Uruguayan Bumblebees: Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae)
Fonte: Neotrop. entomol;40(1):72-77, Jan.-Feb. 2011. graf.
Idioma: en.
Resumo: Bumblebees (Bombus sp.) are eusocial insects with an annual life cycle whose use as pollinator of crops has gained great importance in modern agriculture. Several authors have found that resource use in Bombus species is usually based on the correlation between the proboscis length of the bumblebees and the corolla depth of the flowers. The aim of this study was to determine proboscis length of Bombus atratus and B. bellicosus, two Uruguayan bumblebees, and verify the resource exploitation testing two cultivated species, the red clover and the bird's foot trefoil. Bumblebee foraging activity was recorded in two culture conditions: in a red clover and bird's foot trefoil mixed meadow, and in contiguous plots of these legumes, and the proboscis length of collected foragers was determined. Both species of bumblebees exploited red clover and bird's foot trefoil although they did it in different proportions in all instances tested. The results indicated that the choice of the resources in B. atratus and B. bellicosus was influenced by their proboscis length. Bombus atratus has a longer proboscis and preferably visited red clover, possibly obtaining nectar easier and faster than B. bellicosus, which has a shorter proboscis. Bombus bellicosus used both resources without any clear preference.
Descritores: Abelhas/anatomia & histologia
-Estruturas Animais/anatomia & histologia
Comportamento Alimentar
Tamanho do Órgão
Uruguai
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


  10 / 21 LILACS  
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Texto completo
Id: lil-572477
Autor: Depieri, Rogério A; Siqueira, Fábio; Panizzi, Antônio R.
Título: Aging and food source effects on mandibular stylets teeth wear of phytophagous stink bug (Heteroptera: Pentatomidae)
Fonte: Neotrop. entomol;39(6):952-956, nov.-dic. 2010. ilus, tab.
Idioma: en.
Resumo: Studies were conducted to test the effect of age and food sources on wear of the mandibular teeth of the phytophagous pentatomid, Euschistus heros (F.). The total length (µm) of the area bearing the mandibular teeth, the length of the 1st tooth, and the height of the 2nd tooth for teneral (< 1 day-old) adults were significantly greater than that of adults fed on natural [green bean, Phaseolus vulgaris pods, raw shelled peanuts, Arachis hypogaea, and mature soybean, Glycine max seeds] for 30 or 60 days. Adults fed on artificial dry diet showed, in general, similar results to those of teneral adults. Force (Newtons) required penetrating the natural foods was significantly greater than that required penetrating the artificial diet. The greater hardness of the natural foods caused increased mandibular serration wear.
Descritores: Envelhecimento
Preferências Alimentares
Heterópteros/anatomia & histologia
Heterópteros/fisiologia
-Estruturas Animais
Microscopia Eletrônica de Varredura
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME



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