215 resultados para Nematoides das galhas
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Agronomia (Proteção de Plantas) - FCA
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Pós-graduação em Agronomia (Proteção de Plantas) - FCA
Resposta de ovinos naturalmente infectados por nematoides gastrintestinais em pastos de capim-massai
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The aim of this study was to evaluate the crossbred sheep Santa Ines response to natural infections by gastrointestinal nematodes in Panicum maximum cv. pastures Massai at different times of grazing. For this it was used 36 crossbred sheep Santa Inês, divided into four groups and randomly distributed in massai-grass pickets naturally infected by gastrointestinal nematodes. In the period from October 2013 to May 2014, the animals were weekly monitored for hematology tests (packed cell volume) and parasitological (egg counts per gram of feces and fecal culture) in order to monitor the level of infection of sheep and they were assessed for weight, body condition score and staining ocular mucosa by FAMACHA© method. Furthermore infective larvae was recovery from pasture in times of pre-and post-grazing pasture. At 35 kg body weight, the animals were slaughtered and necropsied to collect the contents of the abomasum and small and large intestines to recover the adult parasites, carrying out the count and identification. The animals on pasture with a height of 40 cm pre-grazing obtained low nematode eggs in feces (1608 eggs / g) and 33 cm those in pre-grazing the highest average (2,539 eggs / g). The animals in different groups showed mean values of packed cell volume less than 23% (P> 0.05). Regarding to FAMACHA, the animals belonging to the groups 40 and 50 cm pre-grazing remained over 50% of individuals between FAMACHA 1 and 2 , and those to 33 and 45 cm pre-grazing showed mostly between FAMACHA 3, 4 and 5 (69.06% and 58.93%, respectively). In the culture of larvae in feces and recovery of pasture larvae before and after grazing the following genera were found, in order of prevalence: Haemonchus, Trichostrongylus, Oesophagostomum and Strongyloides. The pasture with 33 cm of pre-grazing provided the highest number of larvae recovered both in the pre and post-grazing (1,081 and 715 L3 / 100 g of green matter, respectively). Among the different groups, the sheep had an average weight of between 23 and 26 kg and variation between the body 1 and 3 scores with scores greater frequency of 1.5 to 2.It can be observed that the animals kept at different times of grazing got different answers on the parasite load. Animals kept in 40 cm pre-grazing expressed a satisfactory answer than the other groups (33, 45 and 50 cm), best supporting the action of endoparasites. Moreover, this same height, was recovered fewer infective larvae on pasture in pre and post-grazing.
Aspectos da produção de mudas de goiabeira e de aceroleira para evitar a disseminação de nematoides.
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2016
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O objetivo desse trabalho foi realizar a prospecção de fitonematoides em hortas comunitárias localizadas no Município de Petrolina, PE.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, Programa de Pós-Graduação em Agronomia, 2016.
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2016
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Os objetivos deste trabalho foram: Identificar as espécies de Meloidogyne que ocorrem na goiabeira na região semi-árida no Submédio do Vale do Rio São Francisco; Avaliar o comportamento de mudas enxertadas em relação a estacas enraizadas, produzidas por três viveiristas da região; Identificar as espécies de fitonematóides associadas à goiabeira na região semi-árida do Submédio do Vale do Rio São Francisco; Avaliar a resistência de Psidium sp a M. mayaguensis, visando sua possível utilização como porta-enxerto; Avaliar, em condições de campo, a eficiência de Abamectina e de Cadusafos na redução populacional de M. mayaguensis em goiabeira.
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O objetivo desse trabalho foi avaliar a reação de clones avançados de batata do programa de melhoramento da Embrapa a Meloidogyne incognita em campo naturalmente infestado.
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2015
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Este trabalho teve por objetivo identificar possíveis fontes de resistência ao mematoide-das-galhas em genótipos de berinjela.
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O objetivo desse trabalho foi avaliar 31 genótipos de jiló para resistência a M. incognita, M. javanica e M. enterolobii.
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The aim of this study was to conduct a survey on nematodes associated with five cultivated fruit trees growing in the Agroforestry System (AFS) of the municipality of Oiapoque, Amapá, Brazil. Rhizosphere samples were collected from three points at the base of murici (Byrsonima sp.), soursop (Annona muricata), cupuaçu (Theobroma grandiflorum), passion fruit (Passiflora sp.) and peach palm (Bactris gasipaes) trees. Four species of phytonematodes were identified, namely Pratylenchus brachyurus, Helicotylenchus dihystera, Mesocriconema xenoplax and Rotylenchulus reniformis. The most prevalent and abundant species was R. reniformis, which was found in the rhizospheres of passion fruit, cupuaçu, soursop, and peach palm. The first record in Brazil of the nematode P. brachyurus, found in the roots of murici is reported here, and all of the nematode species identified here are the first records for fruit trees in the state of Amapá.
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A new species of Pacholenus Schoenherr from southeastern Brazil (Coleoptera, Curculionidae, Molytinae), and new occurrences of species of the genus. Pacholenus monteiroi sp. nov. (type-locality Brazil, Rio de Janeiro state, Carapebus, Parque Nacional da Restinga de Jurubatiba) is described and illustrated. The weevil develops as a stem gall-former in Calyptranthes brasiliensis Spreng (Myrtaceae). The new species is easily distinguished from the other five known of the genus by the presence of a prominent supra-ocular ridge. An updated key for identification for all species of Pacholenus is provided. Three species of Pacholenus are presently recorded for the states of Rio de Janeiro and São Paulo; P. pelliceus and P. monteiroi occur in both states, while P. penicillus is only known from Rio de Janeiro; P. hispidus occurs in São Paulo, being the most widespread species of the genus, ranging from Minas Gerais south to Santa Catarina.