Melia azedarach L. extracts and their activity on Musca domestica L. (Diptera: Muscidae)

RESUMO: "Extratos de Os bioensaios mostraram inibição no desenvolvimento pós-embrionário das moscas e um signifi cativo aumento do período larva recém eclodida-adulto. Além disso, o peso pupal foi reduzido e a proporção sexual alterada. Foi observada toxicidade para os ovos das moscas. Unitermos: Extratos de planta, Diptera, Melia azedarach, regulação do desenvolvimento, atividade biológica. ABSTRACT: Crudes extracts and fractions from seeds of Melia azedarach L. (Meliaceae) have been assayed on Musca domestica Linnaeus, 1758 (Diptera: Muscidae). Thus, the postembryonic development of the fl ies was reduced and the delay from newly hatched larvae to adults had signifi cant increase. In addition, the pupal weights were reduced and the sexual ratio altered. Toxicity to fl y eggs was also observed

Lignanes from the Brazilian Melia azedarach, and their activity in Rhodnius prolixus (Hemiptera, Reduviidae)

A study of the phagoinhibitor and anti-moulting activities of the Brazilian Melia azedarach, collected in the State of Rio de Janeiro, Brazil, allowed the isolation of four lignanes identified as pinoresinol (1), bis-epi-pinoresinol (2), the hemicetal (3) and the diacid (4). These substances are devoid of anti-moulting activity

Lignanes from the Brazilian Melia azedarach, and their activity in Rhodnius prolixus (Hemiptera, Reduviidae)

A study of the phagoinhibitor and anti-moulting activities of the Brazilian Melia azedarach, collected in the State of Rio de Janeiro, Brazil, allowed the isolation of four lignanes identified as pinoresinol (1), bis-epi-pinoresinol (2), the hemicetal (3) and the diacid (4). These substances are devoid of anti-moulting activity

LARVICIDAL ACTIVITY OF GRANDISIN AGAINST AEDES AEGYPTI

Dengue is a tropical disease caused by an arbovirus transmitted by the mosquito Aedes aegypti. Because no effective vaccine is available for the disease, the strategy for its prevention has focused on vector control by the use of natural insecticides. The aim of this study was to evaluate the larvicidal activity of the lignan grandisin, a leaf extract from Piper solmsianum, against Ae. aegypti.Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)FAPESP Fundacao de Amparo a Pesquisa do Estado de Sao PauloFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundacao para o Desenvolvimento Cientifico e TecnologicoFundacao para o Desenvolvimento Cientifico e Tecnologic

Anti-moulting activity in Brazilian Melia azedarach

Submitted by Sandra Infurna ([email protected]) on 2019-06-18T15:47:44Z No. of bitstreams: 1 DeSimone_Salvatore_etal_IOC_1996.pdf: 73209 bytes, checksum: 9d37b143bffb1685a25ebc2f4ac769cd (MD5)Approved for entry into archive by Sandra Infurna ([email protected]) on 2019-06-18T15:57:13Z (GMT) No. of bitstreams: 1 DeSimone_Salvatore_etal_IOC_1996.pdf: 73209 bytes, checksum: 9d37b143bffb1685a25ebc2f4ac769cd (MD5)Made available in DSpace on 2019-06-18T15:57:13Z (GMT). No. of bitstreams: 1 DeSimone_Salvatore_etal_IOC_1996.pdf: 73209 bytes, checksum: 9d37b143bffb1685a25ebc2f4ac769cd (MD5) Previous issue date: 1996Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bioquímica e Biologia Molecular. Rio de Janeiro, RJ. Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.Max-Planck Institut fur Biochemie. Martinsried bei Munchen, Deutchland.Universidade Federal Fluminense. Instituto de Biologia. Niterói, RJ, Brasil.Universidade Federal Fluminense. Instituto de Biologia. Niterói, RJ, Brasil

Populational studies of Uiva fasciata Delile, as an indicator of pollution in Guanabara Bay (RJ—BRAZIL)

São apresentados resultados de estudos de populações de Uiva fasciata Delile em diferentes condições ambientais, com o objetivo de verificar se essas populações são boas indicadoras de poluição na Baía de Guanabara (RJ). Entre março e dezembro de 1986, foram feitas coletas em três áreas com diferentes estágios de degradação da flora algal, variando entre totalmente degradada a não degradada. A quantificação da cobertura vegetal média de Ulva fasciata e a observação das principais espécies no meso e infralittoral foram feitas em transectos perpendiculares à linha da costa nas três áreas selectionadas. Os resultados obtidos demonstram que em razão da facilidade de coleta e devido ao maior desenvolvimento de Ulva fasciata em locais degradados, esta espécie pode ser considerada boa indicadora de poluição para a região.Populational studies on Ulva fasciata were performed under different environmental conditions with the purpose of determine the significance of this species as a pollution indicator in the Bay of Guanabara (RJ). From March to December 1986, samples were taken in three areas in different stages of degradation of the algal community. Taxonomic and quantitative data were obtained in the meso — and infralittoral levels, along transects perpendicular to the coastline in the selected areas. The easiness of sampling and identification, as well as the great development of U. fasciata in degraded areas, show that this species might be considered a good pollution indicator

Melia azedarach L. extracts and their activity on Musca domestica L. (Diptera: Muscidae)

Crudes extracts and fractions from seeds of Melia azedarach L. (Meliaceae) have been assayed on Musca domestica Linnaeus, 1758 (Diptera: Muscidae). Thus, the post-embryonic development of the flies was reduced and the delay from newly hatched larvae to adults had significant increase. In addition, the pupal weights were reduced and the sexual ratio altered. Toxicity to fly eggs was also observed

Grandisin caused morphological changes larval and toxicity on Aedes aegypti

Dengue is a tropical disease caused by an arbovirus transmitted by Aedes aegypti. Since no effective vaccine is available for treating dengue, the present study focused on population vector control through investigating the use of the lignan grandisin, isolated from Piper solmsianum C. DC., Piperaceae, against the larvae of A. aegypti. Grandisin caused larval (L3) mortality at LC50 150 µg/mL. Histological analysis on A. aegypti larvae treated with grandisin (LC50 50 µg/mL) showed changes in the anterior-middle midgut, with intense tissue destruction and cell disorganization