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Effect of Dimethoate (Rogor 30% EC) on the brain neurosecretory cells of third instar grubs of Oryctes rhinoceros L. (Coleoptera : Scarabaeidae).
J Environ Biol ; 2004 Oct; 25(4): 451-5
Artigo em Inglês | IMSEAR | ID: sea-113935
ABSTRACT
The brain neurosecretory cells of III instar grubs of Oryctes rhinoceros were exposed to insecticide Dimethoate (Rogor 30% EC) in the laboratory condition. The sublethal doses (0.125, 0.25 and 0.5%) of Rogor at time intervals of 8, 16 and 24 h have produced marked changes in the structure and the secretory activities of medial and lateral neurosecretory cells. Rogor stimulates the synthetic activity of these cells at the initial stages of its action and results in the accumulation of neurosecretory materials (NSM) in the cytoplasm. The decreased neurosecretion at later stages of the action was due to its transportation through the axons before the death of treated grubs. Similarly, vacuolization, shrinking and degeneration of cells were also observed in treated grubs.
Assuntos
Texto completo: DisponíveL Índice: IMSEAR (Sudeste Asiático) Assunto principal: Fatores de Tempo / Besouros / Encéfalo / Análise de Variância / Apoptose / Citoplasma / Dimetoato / Relação Dose-Resposta a Droga / Inseticidas / Larva Idioma: Inglês Revista: J Environ Biol Ano de publicação: 2004 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: IMSEAR (Sudeste Asiático) Assunto principal: Fatores de Tempo / Besouros / Encéfalo / Análise de Variância / Apoptose / Citoplasma / Dimetoato / Relação Dose-Resposta a Droga / Inseticidas / Larva Idioma: Inglês Revista: J Environ Biol Ano de publicação: 2004 Tipo de documento: Artigo