Efeito tóxico de flores de espirradeira sobre abelhas operárias africanizadas.

Abstract

The species Nerium oleander L., commonly known as oleander and oleander, is originally from the Mediterranean and belongs to the family Apocynaceae. lactescent is veíy branched and floriferous, leathery leaves and persistent. The flowers are white, pink or red and are formed in the spring and summer. There are several varieties which dizer by the colors of the flowers, which may be single or double, and leaves, which can be entirely green or variegated. For data analysis we used the nonparametric log rank test, comparing the survival curves. The bees avive until the contro1 (25 days reaching a statistical average of 17 days, although it recorded the last larvar dead at 21 days) and those treated with 0.25%, 0.50% and 1.0% respectively experienced mortality at 15, 13 and 12dias. The data analysis showed statistically significant differences between treatments and control, suggesting a toxic effect of the mash obtained from flowers of Nerium oleander L to workers of Apis mellifera. There is a toxic effect of macerated obtained from flowers of Nerium oleander L on honeybee Apis mellifera.