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| Registros recuperados: 60 | |
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| Parada Domínguez, Oscar. |
| El objetivo de este estudio fue evaluar la patogenicidad de los nematodos, Heterorhabditis sp. (CPVG13) y Steinernema spp. (CPVC12, CPVC13) sobre el salivazo, Aeneolamia albofasciata y determinar su persistencia en suelo de tres ingenios azucareros Potrero, Constancia y Motzorongo, en el estado de Veracruz. En el primer experimento la patogenicidad de los nematodos entomopatógenos se evaluó en ninfas de mosca pinta, Aeneolamia albofaciata de 3° y 4° instar, se aplicaron 120 JI/ninfa sobre cajas con seis cavidades, cubiertas previamente con papel filtro, cada cavidad contenía un estolón de pasto (Cynodon sp.) y una ninfa por cavidad. En el segundo experimento, se evaluó la persistencia de los nematodos entomopatógenos (NEPs) en suelo, el experimento tuvo... |
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Palavras-chave: Control biológico; Entomopatógenos; Nematodos; Salivazo; Caña de azúcar; Biological control; Entomopathogenic; Nematodes; Spittle bugs; Sugar cane; Entomología y Acarología; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2258 |
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| López Ruvalcaba, Omar Andrés. |
| Con el objetivo de determinar las cargas parasitarias y su impacto en el rendimiento de la canal de ovinos de pelo. Se analizó el contenido gastrointestinal de 122 animales provenientes de diferentes municipios del estado de Tabasco como: Centro, Emiliano Zapata, Frontera, Huimanguillo, Teapa y de Reforma, Chiapas. El estudio se realizó en un rastro de Villahermosa en los meses de enero a julio de 2011. Del total de animales estudiados 58 fueron hembras y 64 machos. Se utilizó el procedimiento GLM del SAS para analizar los conteos de nematodos adultos totales y por especie respecto al origen, edad, sexo, estado fisiológico, color del pelaje y mes de muestreo. Para analizar el efecto de la parasitosis y los factores genéticos y ambientales sobre el... |
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Palavras-chave: Haemonchus contortus; Cooperia curticei; Trichostrongylus colubriformis; Ovinos; Nematodos; Parasitosis ovina; Sheep; Nematodes; Parasitism sheep; Producción Agroalimentaria en el Trópico; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/741 |
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| VIEIRA, L. da S.; BERNE, M. E. A.; CAVALCANTE, A. C. R.; MENEZES, R. de C. A. A. de. |
| Resumo: Este trabalho avaliou a eficacia de alguns anti-helminticos na reducao do OPG em caprinos e ovinos. Para iisto foram delineados tres experimentos. No experimento 1 foram testados os benzimidozois: fenbendazole (5,0 mg?kg), exfendazole (4,75 mg/kg), albendazole (3,8 mg/kg) e thiabendazole (44,0 mg/kg) em infeccoes naturais por nematodeos em caprinos. No experimento 2, foi feita uma infecai experimental com 4.000 larvas de Haemonchus contortus em caprinos e ovinos, e posteriormente testados o ivermectin (200 mcg/kg) e o netobimin (20 mg/kg). No experimento 3 avaliou-se o levamisole (7,5 mg/kg) em ovinos naturalmente infectados com nematodeos. A reducao do OPG nos caprinos medicados com benzimidazois foi de 84,3%, 92,8%, 73,2% e 30,0%, para o... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Nematódeo gastrintestinal; Resistência anti-helmíntica; Nematodes; Gastrintestinal Nematode; Control; Controle; Endoparasito; Resistance to anthelmintics.; Caprino; Parasitologia; Helminto gastrintestinal; Anti-helmíntico; Resistência química.; Goats; Nematode infections; Anthelmintics; Parasitology.. |
| Ano: 1989 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514281 |
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| Pascal, Pierre-yves; Dupuy, C; Richard, P; Haubois, A.g.; Niquil, N. |
| Deposit feeders are able to process a considerable volume of sediment, containing large quantities of associated bacteria. However, conclusions concerning the trophic role played by benthic bacteria in marine sediments are still not fully elucidated. This study deals with bacterivory by the gastropod Hydrobia ulvae, one of the most abundant deposit-feeding species in intertidal mudflats in Western Europe. Ingestion rates of bacteria were determined during grazing experiments using 15N preenriched bacteria. Grazing experiments were performed in order to measure effects of abiotic (temperature, salinity and luminosity) and biotic (bacterial and algal abundances) factors on ingestion rates of bacteria by H. ulvae of an intertidal mudflat (Brouage,... |
| Tipo: Text |
Palavras-chave: Mudflat; Nematodes; Ammonia tepida; Environmental factors; Grazing; Bacteria; Gastropod; Hydrobia ulvae; Deposit feeding. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4781.pdf |
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| Lima, Mariana G.; De C. Augusto, Ronaldo; Pinheiro Da Silva, Jairo; Thiengo, Silvana C.. |
| As one of the most successful invasive land snail species, Achatina (Lissachatina) fulica Bowdich, 1822 has achieved wide global distribution, particularly in (sub)tropical regions, with further dispersal likely due to climate change. This species of giant African snails (up to 17 cm shell length) is a pest that has extensive negative impact on agriculture and can serve as vector for several parasites, including Angiostrongylus cantonensis, a nematode parasite that causes (human) eosinophilic meningitis, an emergent disease. Investigation showed that A. cantonensis infection negatively impacts the metabolism of A. fulica by depleting polysaccharide stores of the intermediate host, compromising the energy balance of the snail. A review of the literature... |
| Tipo: Text |
Palavras-chave: Achatina fulica; Immunology; Physiology; Nematodes; Angiostrongylus cantonensis. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71144/69462.pdf |
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| Mathieu, M; Leflaive, J; Ten Hage, L; De Wit, R; Buffan Dubau, E. |
| The aim of the present study was to examine the effects of biofilm-dwelling nematode activity on the oxygen turnover of cultured diatom biofilms. Oxygen microprofiles were simultaneously measured using the microelectrode technique in biofilms incubated with and without nematodes during short-term (24 h) and medium-term (6 d) experiments. During 24 h nycthemeral incubations, maximum oxygen concentrations and oxygen peak depths of microprofiles, as well as net oxygen production rates, were significantly higher in the diatom biofilms with nematodes. These effects might be dependent on the densities of nematodes. In the present study, significant effects were observed at nematode densities exceeding 100 ind. cm(-2), but not at a density <50 ind. cm(-2).... |
| Tipo: Text |
Palavras-chave: Bioturbation; Grazing; Net production rate; Oxygen community metabolism; Microelectrode; Oxygen microprofile; Nematodes; Diatom biofilms. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3607.pdf |
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| Registros recuperados: 60 | |
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