Action of andiroba oil (Carapa guianensis) on Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) semi-engorged females: Morphophysiological evaluation of reproductive system

Autor(es)

Ramalho Vendramini, Maria Claudia ^[1] ; Camargo Mathias, Maria Izabel ^[1] ; de Faria, Adriano Uemura ^[1] ; Scopinho Furquim, Karim Christina ^[2] ; De Souza, Leonardo Peres ^[1] ; Bechara, Gervasio Henrique ^[2] ; Roma, Gislaine Cristina ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, BR-13506900 Sao Paulo - Brazil

^[2] Univ Estadual Paulista, UNESP, BR-14884900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 75, n. 12, p. 1745-1754, DEC 2012.
• Citações Web of Science: 19

Resumo

Because of the increasing medical-veterinary importance of ticks, the development of alternative control methods, less aggressive to the host and the environment has become the target of several researches. In this sense, the present study analyzed the action of different concentrations (5, 10, and 20%) of andiroba seed oil (Carapa guianensis) on the reproductive system of Rhipicephalus sanguineus females, through histochemical techniques and the quantification of the reproductive efficiency index. The results showed that andiroba oil is a potent natural agent, able to cause several changes in the oocytes of this species, impairing the reproductive success, once this natural product induces great physiological changes in the oocytes in all development stages, such as drastic reduction in proteins, polysaccharides, and lipids in these cells, and these components are essential for the viability of the embryo. In addition, it was observed that this product stimulate the oviposition, mainly at the concentration of 20%. This higher production of eggs represents a defense mechanism developed by the organism in order to ensure the reproductive success of the species, even in the presence of the toxic agent. However, the results obtained suggested that the laid eggs would not be viable, due to the great changes undergone by the oocytes. Thus, the present study showed that the use of this vegetal product would be an alternative way to control the ticks, bringing benefits similar to the ones obtained through the use of synthetic acaricides; however, with less damage to nontarget organisms and the environment as well. Microsc. Res. Tech., 2012. (C) 2012 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 11/10427-6 - Auxílio técnico para manutenção de colônias de carrapatos e processamento de técnicas laboratoriais
• Beneficiário: Mateus Ribeiro Mota
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 11/07938-9 - Avaliação das alterações celulares nos ovócitos de fêmeas semi-ingurgitadas de Carrapatos Rhipicephalus sanguineus (Acari: Ixodidae) decorrentes da exposição ao óleo de andiroba (Carapa guianensis)
• Beneficiário: Maria Claudia Ramalho Vendramini
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/06865-8 - Estudo morfofisiológico comparativo do sistema nervoso de larvas, ninfas e adultos de carrapatos Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) e avaliação celular do singânglio de fêmeas semi-ingurgitadas expostas à permetrina e ao óleo de andiroba
• Beneficiário: Gislaine Cristina Roma
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
• Processo FAPESP: 10/51942-8 - Estudo morfofisiológico comparativo do sistema nervoso de larvas, ninfas e adultos de carrapatos Rhipicephalus sanguineus (Acari: Ixodidae) e avaliação celular do singânglio de fêmeas semi-ingurgitadas expostas à permetrina e ao óleo de andiroba (Carapa guianensis)
• Beneficiário: Gislaine Cristina Roma
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores