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Texto completo SciELO Costa Rica
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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: Coleópteros/anatomia & histologia
Coleópteros/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


  2 / 18 LILACS  
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Texto completo SciELO Brasil
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
Seres Humanos
Camundongos
Responsável: BR1.1 - BIREME


  3 / 18 LILACS  
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Texto completo SciELO Brasil
Texto completo
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


  4 / 18 LILACS  
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Texto completo SciELO Brasil
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


  5 / 18 LILACS  
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Texto completo SciELO Brasil
Texto completo
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


  6 / 18 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


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Texto completo SciELO Brasil
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


  8 / 18 LILACS  
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Texto completo SciELO Brasil
Texto completo
Id: lil-571582
Autor: Soneira, Paula; Casciotta, Jorge; Almirón, Adriana; Ciotek, Liliana; Giorgis, Pablo.
Título: Redescription of Astyanax erythropterus (Holmberg, 1891) (Teleostei: Characiformes: Characidae) from La Plata basin in Argentina
Fonte: Neotrop. ichthyol;8(4):771-786, 2010. ilus, graf, mapas, tab.
Idioma: en.
Resumo: Astyanax erythropterus (Holmberg, 1891) originally described on the basis of one juvenile, is redescribed herein based on juveniles and adults from the type-localiy. The species differs from its congeners by the combination of 11-13 transverse rows scales above lateral line and 8-10 rows below lateral line; 49-54 perforated scales in the lateral series; iii-v,38-42 anal-fin rays, and dorsal, anal and caudal fins vermilion red in juveniles. The vermilion red coloration of unpaired fins in juveniles of Astyanax is only known in A. correntinus.

Astyanax erythropterus (Holmberg, 1891) originalmente descripta sobre la base de un ejemplar juvenil, es redescripta en base a ejemplares juveniles y adultos de la localidad tipo. La especie se diferencia de sus congéneres por la combinación de 11-13 hileras de escamas transversas por encima de la línea lateral y 8-10 hileras debajo de la línea lateral; 49-54 escamas perforadas en las serie lateral; iii-v,38-42 radios en la aleta anal y juveniles con las aletas dorsal, anal y caudal rojo bermellón. Aletas impares rojo bermellón en ejemplares juveniles de Astyanax son solo conocidas en A. correntinus.
Descritores: Estruturas Animais
Animais
Classificação
Peixes
Zona Tropical
Limites: Animais
Responsável: BR68.1 - Biblioteca Virginie Buff D'Ápice


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Id: lil-571048
Autor: Aponte-Rueda, María; Saade, Ramón; Navarrete-Aulestia, Salvador.
Título: Cirugía axilar endoscópica: modelo de entrenamiento animal / Axillary endoscopic surgery: an animal training model
Fonte: Rev. venez. cir;62(4):117-125, dic. 2009. ilus, tab, graf.
Idioma: es.
Resumo: El objetivo del presente estudio fue desarrollar una herramienta de entrenamiento para la cirugía endoscópica axilar y evaluar su aplicabilidad en un modelo animal. Se realizaron 20 disecciones endoscópicas axilares en 10 cochinos vivos anestesiados. La evaluación de la adquisición de destrezas se realizó a traves de la comparación del tiempo requerido para cada intervención quirúrgica, registrandose de manera secuencial durante un período de seis meses en una serie de tres fases. Se utilizaron cochinas hembras, domésticas, libre de patógenos raza Landrace, eutróficas de tamaño mediano (peso entre 25 y 35 kilogramos), y edad que varió entre 3 y 4 meses, del bioterio del Instituto de Cirugía Experimental de la Universidad Central de Venezuela. El tiempo medio de disección fue de 25.6 + 7.09 minutos. El contenido axilar fue identificado bajo visión endoscópica en 85% de los casos. Las complicaciones intraoperatorias ocurrieron en dos disecciones incluyendo hemorragia incontrolable y enfisema subcutáneo. El tejido fibroglandular fue removido en el 90% de las disecciones. En todas las disecciones axilares se empleó la disección roma digital y la insuflación continua de CO2 entre 8-10 mmHg. En este estudio se logró diseñar un modelo animal como paso inicial de la disección linfática axilar endoscópica en el contexto de un Instituto Experimental. Con el modelo en cochinos vivos, el cirujano puede aprender a manejar las estructuras atraumáticamente para obtener hemostasia, a remover ganglios linfáticos y a usar instrumentos endoscópicos en un espacio cerrado de complicada anatomía con una gran cantidad de estructuras nerviosas y vasculares, lo que permite el desarrollo de un modelo de entrenamiento de destrezas endoscópicas avanzadas.

The objetive of this study was to develop a training tool for endoscopic axillary surgery and evaluate their applicability in an animal model. We performed 20 endoscopic axillary dissection in 10 anesthetized living pings. The assessment of skill acquisition was made by comparing the time required for each surgery sequentially recorded over a period of six months in a series of three phases. Filthy females were used, domestic, Landrace pathogen free, eutrophic, medium size (weighing between 25 and 35 kg), and age ranged from 3 to 4 months, the animal facility of the Instituto Experimental de Cirugía of the Universidad Central de Venezuela. The mean length of dissection was 25.6 + 9.7 minutes. The axillary contents were identified under endoscopic vision in 85% of cases. Surgical complications ocurred in two dissection including uncontrolled bleeding and subcutaneous emphysema. Fibroglandular tissue was removed in 90% of dissection. In all axillary dissection blunt dissection was used as well as digital and continuous CO2 insufflation between 8-10 mmHg. It was possible to desing an animal model as an initial step of endoscopic axillary lymph node dissection in the context of an Experimental Institute. With the model in live pigs, the surgeon can leam to manage endoscopic instrumens used in a confined space of complex anatomy with a lot of nerve and vascular structures, to treat the structure for atraumatic hemostasi and to remove lymph nodes, allowing the development of an advance model for endoscopic skills training.
Descritores: Experimentação Animal
Estruturas Animais/anatomia & histologia
Experiências Laboratoriais
Excisão de Linfonodo
Suínos/cirurgia
-Axila
Endoscopia/métodos
Limites: Animais
Feminino
Tipo de Publ: Estudos de Avaliação
Responsável: VE1.1 - Biblioteca Humberto Garcia Arocha


  10 / 18 LILACS  
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Texto completo SciELO Brasil
Texto completo
Id: lil-547683
Autor: Rosa, João A. da; Freitas, Silvia C. M. de; Malara, Flávio F; Rocha, Cláudia S.
Título: Morphometry and morphology of the antennae of Panstrongylus megistus Burmeister, Rhodnius neglectus Lent, Rhodnius prolixus Stal and Triatoma vitticeps Stal (Hemiptera: Reduviidae)
Fonte: Neotrop. entomol;39(2):214-220, mar.-abr. 2010. ilus, tab.
Idioma: en.
Resumo: The length of the four right antennal segments from nymphs and adults of Panstrongylus megistus Burmeister, Rhodnius neglectus Lent, Rhodnius prolixus Stal and Triatoma vitticeps Stal were measured. The length of the antennal segments of the adults of all four species, 4th and 5th instars of P. megistus, and 5th instar of R. neglectus and R. prolixus followed the same pattern: 2nd>3rd>4th>1st. The pattern of 1st and 2nd instars of P. megistus was: 4th>3rd>2nd>1st. For 3rd instars of P. megistus, 1st and 2nd instars of R. neglectus and R. prolixus they were: 3rd>4th>2nd>1st. Third and 4th instars of Rhodnius neglectus and R. prolixus had a pattern of: 3rd>2nd>4th>1st. Only T. vitticeps showed the same pattern (4th>3rd>2nd>1st) for all five instars. The morphological study of the second antennal segment by scanning electron microscopy (SEM) disclosed that the first instars of all four species exhibit type I bristles sensillae and one trichobothrium. Another type III bristle and basiconic, campaniform, coeloconic, trichoid sensillae and type I bristle and trichobothria were noted on their fourth instars and adults. Campaniform sensillae were noted only on T. vitticeps adults. Nodules were observed in the joint between 1st and 2nd antennal segments of adults of P. megistus and T. vitticeps, but not on R. neglectus and R. prolixus.
Descritores: Panstrongylus/anatomia & histologia
Rhodnius/anatomia & histologia
Triatoma/anatomia & histologia
-Estruturas Animais
Microscopia Eletrônica de Varredura
Ninfa
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde