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| Registros recuperados: 72 | |
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| Bellec, Laure; Cambon-bonavita, Marie-anne; Cueff-gauchard, Valerie; Durand, Lucile; Gayet, Nicolas; Zeppilli, Daniela. |
| Deep-sea hydrothermal vent meiofauna have been the focus of recent research and the discovery of an abundant well-adapted free-living marine nematode on the Mid-Atlantic Ridge offers new perspectives on adaptations to the vent environment. Indeed, knowledge concerning biological interactions of microbes and meiofauna in marine extreme environments is scarce, especially for nematodes. In this study, we used microscopic observations [fluorescence in situ hybridization (FISH) and scanning electron microscopy (SEM)] and metabarcoding of 16S rRNA to characterize the bacterial community of the nematode species Oncholaimus dyvae, an overlooked but ecologically important vent organism. Detection of bacteria in the buccal cavity and on the cuticle (SEM) and... |
| Tipo: Text |
Palavras-chave: Sulfur-oxidizing bacteria; Lucky Strike vent field; Meiofauna; Nematode; Endosymbiont. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00457/56846/58676.pdf |
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| Thomas,Micheli C; Lana,Paulo C. |
| We tested experimentally the hypothesis that prevailing locomotion/feeding strategies and body morphology may lead to more active dispersal of free-living marine nematodes, besides passive transport. Neutral Red was applied to the sediment inside cores and the red plume formed during the flood tide was divided into near, middle, and distant zones. At 0.5 m and 1 m from the stained cores, sampling nets were suspended 5 and 10 cm above the sediment-water interface. Dispersion behaviors were defined as a function of a) the numbers of stained recaptured nematodes in comparison to their mean densities in the sediment, b) movement in the sediment or swimming in the water column, and c) body morphology. Tidal currents with average velocities of 9 cm/s resuspended... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dispersion behavior; Intertidal flats; Nematode; Paranaguá Bay. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400006 |
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| Macedo, Francisco de Assis Fonseca de; Universidade Estadual de Maringá; Lourenço, Fábio José; Universidade Federal do Mato Grosso; Santello, Graziela Aparecida; Escola Superior Batista do Amazonas; Martins, Elias Nunes; Universidade Estadual de Maringá.; Mora, Natália Holtz Alves Pedroso; Universidade Estadual de Maringá; Mexia, Alexandre Agostinho; Universidade do Estado de Mato Grosso. |
| The accuracy of the FAMACHA© method was evaluated on the identification of female sheep fed two levels of crude protein, naturally infected with Haemonchus contortus, by means of the correspondent hematocrit value. Forty-seven female sheep of the breeds Santa Inês (n = 16), Texel (n = 16) and Ile de France (n = 15) aged between eight and twelve months were assigned to two treatments, 12 or 16 % crude protein in the diet. All the animals were wormed thirty days before the first data collections, which were done fortnightly between July 2005 and March 2006. The color of the ocular conjunctiva was individually evaluated according to the precepts of the FAMACHA© method and the hematocrit value of each animal was obtained in laboratory. A correlation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.05.02-0 anemia; Anthelmintic; Nematode; Parasitosis. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21871 |
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| Torres,ACD; Costa,CS; Pinto,PN; Santos,HA; Amarante,AF; Gómez,SYM; Resende,M; Martins,NRS. |
| ABSTRACT Industrial broilers raised on helminthic medication-free feed were diagnosed with a severe disease caused by Ascaridia galli, characterized by intestinal hemorrhage and obstruction. A. galli was identified based on the morphological features of the nematode. Broilers were raised for a longer period (63 days) for weight recovery, grouped as stunted (n=500), had low body score and had fetid diarrhea. The duodenum-jejunum segment was the most severely affected with obstruction and had localized accumulation of gas. The intestinal mucosa was severely congested with petechial and suffusive hemorrhages. The outbreak resulted in morbidity of about 10% and mortality of up to 4% and was associated to the absence of preventive medication on feed and slack... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ascaroidea; Broiler chicken; Nematode; Enteriitis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400322 |
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| Ferreira Júnior,Jair Alves; Blume,Guilherme Reis; Sousa,Susy Karoline Hermes de; Carvalho,Clarissa Machado de; Gardiner,Chris. |
| ABSTRACT: Nematodes of the superfamily Metastrongyloidea affect the respiratory, cardiovascular, and nervous systems of domestic carnivores and are uncommonly detected in wild animals. This report describes the lesions associated with pulmonary parasitism by nematodes of the superfamily Metastrongyloidea in a wild crab-eating fox ( Cerdocyon thous ) in the Federal District, Brazil. Grossly, there was pulmonary hyperemia, edema, and emphysema. Microscopically, there was granulomatous arteritis associated with intravascular metastrongylid. The anatomical location, characteristic lesion, and histological features of the parasite suggested that the nematode involved in this case is Angiostrongylus vasorum . This worm is frequently reported parasitizing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Angiostrongylus; Nematode; Wild canids; Pathology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200501 |
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| Pascal, P.y.; Dupuy, C; Richard, P; Rzeznik-orignac, J; Niquil, Nathalie. |
| The fate of the benthic bacterial biomass is a topic of major importance in understanding how softbottom environments function. Because of their high abundance, production and nutritional value, benthic bacteria may constitute an important food resource for benthic fauna. The trophic role of bacteria for a nematode community on the Brouage mudflat (Marennes-Ole´ron-France), dominated by three species: Chromadora macrolaima (64% of the abundance), Daptonema oxycerca (15%) and Ptycholaimellus jacobi (8%), was determined in grazing experiments using 15N pre-enriched bacteria. On intertidal flats, seasonal, tidal and circadian cycles induce strong variations in environmental conditions. Grazing experiments were performed in order to measure the effects of... |
| Tipo: Text |
Palavras-chave: Mudflat; Environmental factor; Grazing; Bacteria; Nematode. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4295.pdf |
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| Santiago,Débora Cristina; Krzyzanowski,Alaíde Aparecida; Homechin,Martin. |
| The influence of Meloidogyne incognita and M. paranaensis on the development of mate (Ilex paraguariensis ST. Hill) plantlets was assessed in greenhouse and laboratory. The experimental design was randomized. Every plot of each one of the 10 repetitions contained one mate plantlet , inoculated with 5,000 eggs of M. incognita (races 1, 2, 3 and 4) and M. paranaensis. After 120 days it was observed that mate was a reliable hostess to such nematodes and that they could finish their life cycle. Plant development was significantly modified by M. incognita, races 1 and 2. Dry and green matter weight of shoots changed according to treatment. No changes were observed in fresh root weight. The number of eggs per root was similar for M. incognita, races 1 and 2, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tea; Nematode; Root-knot. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200001 |
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| Torres López, Japhet. |
| El objetivo de esta investigación fue estudiar la respuesta de los árboles de guayabo al tratamiento con diferentes abonos orgánicos y la incorporación del hongo nematófago Pochonia chlamydosporia y el efecto en la reducción de juveniles (J2) de Meloidogyne arenaria. Se tomaron muestras de suelo infestados con el nematodo en la región guayabera oriente del estado de Michoacán, México. Se obtuvieron dos aislamientos de Pochonia chlamydosporia var. chlamydosporia provenientes de raíz y suelo. Se obtuvieron in vitro los aislamientos, de raíz que parasitó 89 % huevos de Meloidogyne sp. y el aislamiento de suelo parasitó 83% con una producción de 18 x 107 •g-1 y 11 x 107 •clamidosporas/g-1 respectivamente. Se aplicaron 13.5 kg, 42 kg y 13.5 kg de gallinaza,... |
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Palavras-chave: Nematodo; Meloidogyne arenaria; Vermicomposta; P. chlamydosporia; Hongo nematófago; Nematode; Vermicompost; Nematophagus fungus; Fitopatología; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2313 |
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| Martins,M.L.; Garcia,F.; Piazza,R.S.; Ghiraldelli,L.. |
| The present study describes Camallanus maculatus n. sp. (Nematoda: Camallanidae) from Xiphophorus maculatus (Osteichthyes: Poecilidae) collected in an ornamental fish farm in São Paulo State, Brazil. Thirty-three out of 40 examined fish were parasitized (82% prevalence) with mean intensity of 2.8 (1-20). Male specimens were 3,500µm total length and females 7,100µm total length, provided with orange-brown buccal capsule and two developed tridents. Males showed two unequal spicules, gubernaculum absent and females with vulva situated in the middle of the body. The main characteristics were the sleekly longitudinal ridges in the buccal capsule in both sexes, enlargement at the anterior end of the smaller spicule, the number of genital papillae, longer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Xiphophorus maculatus; Nematode; Prevalence; Camallanus maculatus n. sp. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000500019 |
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| Jolodar,Abbas; Miller,David J.. |
| Two constructions in pHS164 vector were designed to permit expression of OV7A and OV4A inserts encoding the N-terminal and C-terminal portion of an aspartic protease from Onchocerca volvulus, respectively. A novel 39 kD protein ompA-OV7A fusion protein was stably expressed as ompA fusion in a modified strain of Salmonella typhimurium strain SL5000 and E.coli strain JM109. Expression of the fusion protein in bacterial strains harboring the constructs were evaluated by western blotting. E.coli and Salmonella lysates were fractionated by 10% SDS-PAGE gel and then immobilized to nitrocellulose membrane by electroblotting. Primary polyclonal antibody generated in rats against the GST-OV7A fusion protein was used in the Western blots. It remains to be seen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Filarial parasite; Nematode; Salmonella typhimurium. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000100018 |
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| Peak,Emily; Hoffmann,Karl F. |
| Parasitic worms (helminths) within the Phyla Nematoda and Platyhelminthes are responsible for some of the most debilitating and chronic infectious diseases of human and animal populations across the globe. As no subunit vaccine for any parasitic helminth is close to being developed, the frontline strategy for intervention is administration of therapeutic, anthelmintic drugs. Worryingly, and unsurprising due to co-evolutionary mechanisms, many of these worms are developing resistance to the limited compound classes currently being used. This unfortunate reality has led to a renaissance in next generation anthelmintic discovery within both academic and industrial sectors. However, a major bottleneck in this process is the lack of quantitative methods for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helminth; Schistosome; Nematode; Viability; Phenotype. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200024 |
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| Registros recuperados: 72 | |
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