Consequências da toxicidade do macerado de flores de aspidosperma pyrifollium em abelhas africanizadas.

Abstract

The objective of this study was to evaluate the consequences of the maceration of Aspidosperma pyrifollium flowers available as food for Apis mellifera bees under controlled management conditions. For that, bioassays were performed at the Entomology Laboratory of the Federal University of Campina Grande, Pombal Campus. It used dry and crushed Aspidosperma pyrifollium flowers. The powder of the flowers was weighed into three different fractions (0.25%, 0.50% and 1.0%) and added to the candi and water. The newly emerged workers were distributed in a set of 20 insects per wooden box measuring 11 cm in length by 11 in width and 7 cm in height in three replicates and the control, comprising 12 boxes and 240 worker bees, were conditioned in BO D with temperature set at 32 ° C and humidity of 70%. The control group received only the candi and water. Thus, the results of the statistical analysis were obtained by comparing the treatment and control group concentrations in the macerated ingestion experiment of the flowers. For the analysis of the data the non-parametric Log Rank Test was used in the comparison of the survival curves. In view of this, it can be observed that the survival of the bees was reduced with the use of the diet containing the flower extracts of Aspidosperma pyrifollium. The control bees remained alive until the 22nd day and for those treated with 0.25%, 0.50% and 1.0% respectively presented mortality at 17, 16 and 14 days, suggesting that there is a toxic effect of the macerate obtained from of flowers of Aspidosperma pyrifollium the bees.