Efeito tóxico de flores maceradas do pinhão roxo (Jatropha gossypifolia L.) sobre abelhas africanizadas.

Abstract

This study aimed to evaluate the toxic effect of the purple flowers of Jatropha Africanized bees under laboratory conditions. The experiment was conducted at the entomology laboratory of the Universidade Federal de Campina Grande. Campus Pombas - PB, using dried flowers of purple nut-macerated, weighed in three dHerent fra(iions (0.25%, 0.50% and 1 .0 a%) and added to an artificial diet known as ''Cândi". 'The fractions were placed in small plastic caps with a small screen wire covering to prevent the insect drowns when the diet is liquid. The newly emerged bees were placed in groups of 20 individuais in wooden boxes measuring 11 cm lona x ll enches wide and 7 inches deep, with three repetitions at a temperature of 32 ' C and 70% RH in greenhouses BOD To perform the analysis using the nonparametric log rank test for comparison of survival curves. 'The bees in the control group survived to 25 days, reaching a statistical average of 19 days. The experimental group treated with 0-25% had average mortality at 13 days, fed at 0.50% showed average mortality of 09 days and who ate diets to 1 .0% of macerateC flower reached an average mortality of 08 days. The results of the anatysis of data showed statistically significant differences between treatment and control groups. v\nth these results we conclude that the mash obtained from the flowers of Jafropha gossypiiÉo/ia L. is toxic to Africanized honeybees Ax)is me//fãera.