Avaliação do efeito toxico do macerado de flores de anil sob abelhas operárias no município de Pombal - PB.

Abstract

In some plants, secondary components of nectar or pollen may be toxic or repellent to their pollinators. In this sense, The objective of this research was to evaluate the toxicological effect of indigo macerated flowers, as added to the feeding of worker bees in a controlled environment in the facilities of the Paraíba Sertão Agro-Food Science and Technology Center. Therefore, bioassays were performed at the Entomology Laboratory of the Federal University of Campina Grande, Campus de Pombal. Used dried and crushed Anil flowers. The flower dust was weighed in three different fractions (25%, 50% and 100%) and added to candi and water. The newly emerged operatives were distributed in a set of 20 insects per wooden box measuring 11 cm long by 11 wide and 7 cm high, in three repetitions and the control, making 12 boxes and 240 worker bees, were placed in BO D with temperature adjusted to 32º C and humidity of 70%. The control group received only candi and water. From the results obtained with the research it can be observed that the control bees remained alive until 20, for those treated with 25%, 50% and 100% respectively presented mortality at 15, 18 and 17 days for bees fed with indigo. Data analysis showed statistically significant differences between treatments and control, suggesting toxic effect of macerate obtained from indigo flowers for Africanized bee workers Apis mellifera. Thus, it can be concluded from this work that: The bees fed only with candies (Control) remained alive until 20 by indigo treatments (Indigofera suffruticosa Mill); Bees submitted to controlled nutrition with 25%, 50% and 75% concentrations of indigo macerated, respectively, presented mortalities at 15, 18 and 17 days; Flowers of (Indigofera suffruticosa Mill) showed toxicity to Apis melifera under controlled environment conditions.