Showing papers by "Universidade Federal de Mato Grosso published in 1985"
TL;DR: Observations suggested that Shannoni group sand flies were the natural vectors of Endotrypanum.
Abstract: Flagellate infections were found in 1,063 of 18,895 sand flies collected in the states of Amazonas, Para, Rondonia and Acre, Brazil. Infection rates were 13.4% (species group Shannoni); 7.5% (subgenus Nyssomyia); 6.7% (subgenus Lutzomyia series Cruciata); 0.5% (genus Psychodopygus) and 3.1% for other sand flies (various subgenera). Leishmania braziliensis guyanensis and L. mexicana amazonensis were isolated, respectively, from the known vectors, Lutzomyia umbratilis and L. flaviscutellata. Single stocks of L. braziliensis-like and L. mexicana-like organisms were isolated, respectively, from L. whitmani and L. yuilli. Thirty-eight flagellate stocks, isolated by direct culture from sand flies were characterized in detail by morphology in culture, behavior in hamsters and mice and by enzyme profiles. Sixteen stocks from Lutzomyia sp. (Shannoni group) were identified as Endotrypanum schaudinni; 8 stocks from Lutzomyia sp. (Shannoni group) were identified as Endotrypanum sp.; 7 stocks from Psychodopygus ayrozai and P. paraensis were identified as Leishmania sp. previously isolated from the armadillo, Dasypus novemcinctus; 2 stocks of Trypanosoma rangeli were isolated from recently fed Lutzomyia sp. (Shannoni group) sand flies; the remaining 5 stocks from L. umbratilis and L. yuilli could not be identified. Observations suggested that Shannoni group sand flies were the natural vectors of Endotrypanum. Leishmania sp. infections in the man-biting flies P. ayrozai and P. paraensis were restricted to the midgut and associated with recent bloodmeals. Unidentified flagellates in L. umbratilis and L. yuilli were distributed throughout the digestive tract with no trace of bloodmeals.
97 citations
DOI•
01 Nov 1985TL;DR: A simple lumped-parameter model for the frequency-dependent transmission line is presented in this paper, where the transients due to sequential energisation of a 345 kV transmission system have been computed with the proposed line model.
Abstract: A simple lumped-parameter model for the frequency-dependent transmission line is presented in this paper The transients due to sequential energisation of a 345 kV transmission system have been computed with the proposed line model The computed results show satisfactory agreement with field measurements
1 citations
TL;DR: The larvae are defoliators and considered as pest of economical importance on homogeneous plantation of Eucalyptus spp.
Abstract: Este trabalho trata do estudo da biologia de Glena unipennaria unipennaria (Guenee, 1857) (Lepidoptera, Geometridae), cujas lagartas sao desfolhadoras e consideradas como praga de grande importância economica, em povoamentos homogeneos e implantados de Eucalyptus spp. (Myrtaceae), no Brasil. Os insetos foram criados em condicoes de laboratorio (temperatura 25±3°C; UR:70±10; fotoperiodo de 12 horas), no Laboratorio de Controle Biologico, do Departamento de Entomologia, da Escola Superior de Agricultura "Luiz de Queiroz"-USP, em Piracicaba, SP, em 1978. As lagartas foram alimentadas, exclusivamente, com folhas de Eucalyptus grandis (Hill) Maiden. Foram estudados os seguintes parâmetros: periodo e viabilidade das fases de ovo, lagarta (exceto viabilidade), pre-pupa; numero e duracao dos instares larvais e consumo foliar na fase larval; longevidade dos a dultos e proporcao quanto ao sexo. Medidas lineares foram tomadas das capsulas cefalicas das lagartas, comprimento e maior largura das pupas e envergadura das asas anteriores dos adultos. Aspectos relacionados com o comportamento e morfologia externa tambem foram observados.
1 citations
TL;DR: This research deals with the study of the biology of Rolepa unimoda (Dognin, 1923) (Lepidoptera, Lymantri idae), which is defoliators on ornamental plantings of Tabebuia avellanedae Lor.
Abstract: Este trabalho trata do estudo da biologia de Rolepa unimoda (Dognin,1923) (Lepidoptera, Lymantriidae), cujas lagartas sao desfolhadoras em plantios ornamentais de Tabebuia avellanedae Lor. ex-Griseb (Bignoniaceae). Ataca tambem T. caraiba (Mart.) Burm. Os insetos foram criados em condicoes de laboratorio (Temperatura 27±2°C; UR: 70 ± 15%, Fotoperiodo de 12 h), na Secao de Entomologia do Centro de Ciencias Agrarias da Fundacao Universidade Federal de Mato Grosso, em Cuiaba, MT. Foram estudados os seguintes parâmetros: periodo e viabilidade das fases de ovos,lagarta, pre-pupa e pupa; numero e duracao dos instares larvais e consumo foliar da fase de lagarta; longevidade dos adultos e proporcao quanto ao sexo; inimigos naturais; plantas hospedeiras e ocorrencia do inseto nos Estados de Mato Grosso e Mato Grosso do Sul.
1 citations