Dinâmica de movimentação de Harmonia axyridis (Coleoptera: Coccinelidae) sob influência de Delphinium staphisagria (Ranunculaceae)

• Autor(a) principal: Santos, Carolina Francine Mariano [UNESP]
• Data de Publicação: 2019
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203296; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2020-02-27/000927490.pdf
• topic: Coleoptero; Pragas - Controle; Produtos químicos agrícolas; Alcalóides; Hemiptera; Joaninha (Inseto); Pragas - Controle biologico; Sistemas de controle biologico; Inseticidas

Pest control through the use of pesticides has been the subject of several problematizations, due to the risk of resistance selection in insects, the negative influence on populations of non-target organisms and the environment contamination. In this context, other practices, such as biological control, are necessary. Another way to minimize the negative impacts of chemical contamination is utilizing alternative insecticides. In this sense, homeopathic preparations, obtained from dried seeds of the plant Delphinium staphisagria L. (Ranunculaceae), which contain toxic alkaloids, have deserved relevant attention by the scientific community and agriculture producers, especially regarding aphids control. However, information that can concretize the implementation of this molecule within an integrated pest management program are still incipient. Against this scenario, this study objective was to analyze the impact of the alternative insecticide Staphisagria CH6 on the movement behavior of the ladybug Harmonia axyridis. The research was carried out in the Laboratory of Insect Ecology and Forest Entomology - ESALQ / USP, utilizing leaf discs of cotton plants, which received the product. Adult females insects were kept together with one of the leaves in a Petri dish and monitored with the aid of Ethovision equipment, being measured variables that described the performance pertinent to the insect's movement, in order to characterize the repellent potential of Staphisagria in H. axyridis. Results shows that, under the influence of agrohomeopathic, individuals presented changes in their movement pattern, exhibiting a higher average speed (cm/s) in the treatment with the product in relation to the control; however, the walked distance (cm) remained higher in the group without product application. Thus, the results presented in this work consists of preliminary indications of the applicability of Staphisagria concomitant to the use of H. axyridis as a...