MACEDO, Caubi Rocha de.
Resumo:
Plants of the genus Erythrina are known to produce alkaloids, flavonoids and isoflavonoids. These plants represent the main source of tetracyclic alkaloids, which have curare similar activity causing muscle paralysis. The objective of this work was to study the macerate response of the flower of this plant to bee workers mixed with the artificial diet known as Cândi in the concentrations of 0.25%, 0.50% and 1.0%. For this purpose, the bees were packed in wooden boxes measuring 11 cm in length x 11 in width and 7 cm in depth. In each box were placed 20 bees newly emerged and conditioned in greenhouse B.O.D. with a temperature of 32 ° C and 70% RH. In the data analyzes, the non-parametric Log Rank Test was used in the comparison of the survival curves. Control group bees survived until the seventeenth day, reaching a statistical average of 17 days. Those of the experimental group treated with 0.25%, 0.50% respectively presented average mortality at 11 is 11 days and 4 days for those fed with 1.0% of the macerated. Data analysis showed statistically significant differences between the treatment and control groups. In this way we can suggest that macerates obtained from flowers of Erythrina vellutina are toxic for workers of Apis mellifera.
