SOUZA, Eldon Mácio Lacerda de.
Resumo:
The use of products extracted from plants for insect control have been developed quite an activity for farmers, especially in the control of sucking insects and pests of vegetables however, these compounds may reach insects which do not cause damage to various crops. This work aims to study the timbó oil toxicity to bees Apis mellifera in controlled conditions. Bioassays were carried out at the Entomology Laboratory of the Federal University of Campina Grande, Campus de Pombal. If used timbó oil in three different fractions (0.25mg 0.50mg and 1.0mg) and added to the "candy" and water. The workers recently emerged were selected by size and color, distributed set of 20 insects per wooden box measuring 11 cm long by 11 wide and 7 cm high, in three replications and control, comprising 12 cases and 240 worker bees, they were placed in BO D with temperature set to 32 ° C and 70% humidity. The control group received only the candy and water. Insects treatment received the candy with the oil of fish poison. The result of statistical analysis when comparing the concentrations of the treatment and the control group in timbó oil intake experiment. For data analysis we used the nonparametric test Log Rank Test, comparing the survival curves. It was observed that the survival of bees was reduced with the use of diet containing the compound of timbó oil (rotenone). The control bees remained alive up to 25 days and treated with 0.25mg, 0.50mg and 1.0mg respectively presented 12, 09,09 days of survival, suggesting that there is a toxic effect of timbó of oil workers of Apis Honeybee.
