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Registros recuperados: 54
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A Nematode of the Mid-Atlantic Ridge Hydrothermal Vents Harbors a Possible Symbiotic Relationship ArchiMer
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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A new look into the small-scale dispersal of free-living marine nematodes Rev. Bras. Zool.
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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A new species of Trileptium (Nematoda: Thoracostomopsidae) from Bahia, Brazil Rev. Bras. Zool.
Vilas-Boas,Ana C.; Silva,Maria C. da; Alves,Orane F. de Souza; Castro,Francisco J.V. de; P. Pinheiro-Junior,Eraldo.
ABSTRACT A new species of a free-living marine nematode found in Brazil is described: Trileptium ribeirensis sp. nov. The type material is deposited in the Nematoda collection of the Museu de História Natural da Bahia, located at the Universidade Federal da Bahia. Trileptium includes eleven valid species of nematodes that have teeth and jaws positioned forward. The species was collected with the help of corers (3.5 cm in diameter and 30 cm long) on a sandy beach in Bahia. This species is distinguished from its congeners based on a combination of characters of the male (cuticle, buccal cavity, supplement and gubernaculum). An updated taxonomic key to the genus is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nematode; Salvador; Sandy beach; Trileptiinae.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000103000
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Accuracy of the FAMACHA© method in ewes fed different levels of crude protein Animal Sciences
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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An Outbreak of Intestinal Obstruction by Ascaridia Galli in Broilers in Minas Gerais Rev. Bras. Ciênc. Avic.
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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Anatomo-pathological aspects of parasitism by nematodes of the superfamily Metastrongyloidea in wild crab-eating fox (Cerdocyon thous) in Midwestern Brazil Ciência Rural
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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Bacterivory of a mudflat nematode community under different environmental conditions ArchiMer
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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Behavior of Ilex paraguariensis St. Hilaire, 1822 to Meloidogyne incognita and M. paranaensis and their influence on development of plantlets BABT
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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Biodesinfección del suelo y uso de Pochonia chlamydosporia en el manejo de Meloidogyne arenaria en el cultivo de guayabo en el oriente de Michoacán. Colegio de Postgraduados
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,...
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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Camallanus maculatus n. sp. (Nematoda: Camallanidae) in an ornamental fish Xiphophorus maculatus (Osteichthyes: Poeciliidae) cultivated in São Paulo State, Brazil Arq. Bras. Med. Vet. Zootec.
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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Construction and expression of aspartic protease from Onchocerca volvulus* as ompA fusion protein in a mutant strain of Salmonella typhimurium Genet. Mol. Biol.
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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Controle de nematódeos gastrointestinais em matrizes suínas e sua influência sobre as leitegadas. Infoteca-e
FORMIGA, D. das N.; LIGNON, G. B.; MARQUES, S. M. T.; FREITAS, A. R. de.
O controle da verminose deve ser dirigido primeiramente para a porca, tendo em vista que estas podem tornar-se fonte de infecção, especialmente para leitões. A eliminação de ovos de helmintos nas fezes, aumenta durante o período de lactação das fêmeas suínas. Objetivando determinar a influencia do tratamento anti-helmíntico, administrando nas porcas antes do parto, sobre redução do numero de ovos nas fezes bem como sobre as infecções e performance dos leitões ate o desmame.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Nematódeos gastrointestinais; Suínos; Controle; Porcas leitegadas; Nematode; Control.; Swine..
Ano: 1980 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/42183
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Cross-disciplinary approaches for measuring parasitic helminth viability and phenotype Anais da ABC (AABC)
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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Crotalárias para controle de nematóide em fruteiras irrigadas e melhoria das características físico-quimicas dos solos. Infoteca-e
CHOUDHURY, E. N.; CHOUDHURY, M. M.; DIAS, F. A. N..
bitstream/item/45467/1/PA-64-1991.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Controle; Caracteristica fisico-quimica; Fruit; Nematode; Control; Physicochemical characteristic.; Nematóide; Fruta; Irrigação; Solo.; Irrigation; Soil..
Ano: 1991 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131766
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Death of two slender-billed parakeet (King) (Enicognathus leptorhynchus) (Aves, Psittacidae) by Ascaridia hermaphrodita (Froelich, 1789, Railliet & Henry, 1914) at the National Zoo of Santiago, Chile Arq. Bras. Med. Vet. Zootec.
González-Acuña,D.; Fabry,M.; Nascimento,A.A.; Tebaldi,J.H..
No Zoológico Nacional do Parque Metropolitano de Santiago, Chile, foram encontrados dois psitacídeos Enicognathus leptorhynchus, mortos pelo nematódeo Ascaridia hermaphrodita (Froelich, 1789). Este é o primeiro registro desse nematódeo em E. leptorhynchus e também o primeiro registro deste parasito no Chile.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Psittacid; Enicognathus; Leptorhynchus; Nematode; Ascaridia hermaphrodita; Chile.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000200044
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Deep-sea nematode assemblage has not recovered 26 years after experimental mining of polymetallic nodules (Clarion-Clipperton Fracture Zone, Tropical Eastern Pacific) ArchiMer
Miljutin, Dmitry M.; Miljutina, Maria A.; Arbizu, Pedro Martinez; Galeron, Joelle.
We investigated nematode assemblages inhabiting the 26-year-old track created by experimental deep-sea mining of polymetallic nodules, and two adjacent, undisturbed sites, one with nodules and one without nodules. The aim was to compare density, assemblage structure, and diversity indices in order to assess the process of recovery of the nematode assemblage inhabiting the disturbed site. This experimental dredging was conducted in 1978 by the Ocean Minerals Company (USA) in the area of a French mining claim in the Clarion-Clipperton Fracture Zone (Tropical Eastern Pacific) at a depth of about 5000 m. The nematode assemblage had not returned its initial state 26 years after the experimental dredging: the total nematode density and biomass within the...
Tipo: Text Palavras-chave: Body volume; Deep-sea; Density; Disturbance; Diversity; Dredging; Mining; Nematode; Nodule; Recolonization; Recovery.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00047/15867/13321.pdf
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Devenir des bactéries dans les réseaux trophiques des vasières intertidales : le cas de brouage (Baie de Marennes-Oléron) ArchiMer
Pascal, Pierre-yves.
Bacteria are highly abundant and productive in intertidal mudflat sediments. By analogy with pelagic system, it has been suggested that bacteria play an important role in benthic food web. Due to technical difficulties, numbers of studies dealing with benthic bacterivory are not numerous and give conflicting results. A method using community of 15N enriched bacteria as tracer was developed in order to measure grazing of meiofauna and macrofauna. Since enriched bacteria present characteristics of size, activity and diversity close to natural ones, bias due to selective bacterial ingestion by grazers are limited. Due to tidal cycles, intertidal mudflat constitutes highly variable environment at short time scale. Since those variations may influence...
Tipo: Text Palavras-chave: Stable isotope; Hydrobia ulvae; Foraminifera; Copepod; Nematode; Bacteria; Mudflat; Trophic foodweb; Isotope stable; Hydrobia ulvae; Foraminifère; Copépode; Nématode; Bactérie; Vasière; Réseau trophique.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-4778.pdf
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Doencas da ervilha (Pisum sativum L.). Infoteca-e
SANTOS, J. R. M.; REIFSCHNEIDER, F. J. B.; GIORDANO, L. B.; COBBE, R. V..
Situacao atual da ervilha no Brasil; Manejo integrado das doencas; Doencas de importancia economica no Brasil; Doencas e patogenos registrados no Brasil e no mundo; Distribuicao dos patogenos registrados no Brasil; Informacoes tecnicas sobre fungicidas registrados.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Pea; Bacterial disease; Fungal disease; Fungus; Nematode; Management.; Bactéria; Controle Químico; Doença; Ervilha; Fungo; Manejo; Nematóide; Pisum Sativum; Vírus.; Chemical control..
Ano: 1991 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/757803
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Doencas do girassol; descricao de sintomas e metodologia para levantamento. Infoteca-e
ALMEIDA, A. M. R.; MACHADO, C. C.; PANIZZI, M. C. C..
Sintomatologia das principais doencas do girassol: doencas causadas por fungos, mancha de alternaria, mancha de septoria, mildio, ferrugem, bolha branca, oidio, podridao negra, mancha preta da haste, murcha de Verticillium, podridao e murcha de Sclerotinia, podridao cinza do capitulo, Rizoctoniose, podridao do capitulo, podridao da base; Doencas causadas por bacterias, mancha bacteriana e crestamento bacteriano; Doencas causadas por virus, mosaico comum do girassol; Doencas causadas por nematoides; Esquema de levantamento de doencas de girassol.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Brasil; Parana; Sunflower; Disease; Survey; Nematode; Fungus.; Bactéria; Doença; Fungo; Girassol; Levantamento; Nematóide; Vírus.; Brazil..
Ano: 1981 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445190
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Eficácia do alho desidratado (Allium sativum L.) no controle de nematódeos gastrintestinais em bovinos. Infoteca-e
BIANCHIN, I.; CATTO, J. B..
bitstream/item/104659/1/Eficacia-do-alho-desidratado.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Controle; Nematode; Control.; Alho; Allium Sativum; Bovino; Nematóide; Sanidade Animal.; Animal health; Cattle..
Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325805
Registros recuperados: 54
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