Influência do milho transgênico no desenvolvimento de Anagasta kuehniella (ZELLER, 1879)

Abstract

The objective of this study was to evaluate the influence of genetically modified maize fubá on the development of Anagasta kuehniella. The bioassay was conducted in climatic chambers with a temperature of 25 ± 2 ° C, relative humidity of 40 ± 10% and photophase of 14h. Newly hatched larvae of Anagasta kuehniella were kept on an artificial diet containing organic and transgenic corn fubá until the pupal stage. The experimental design was completely randomized, with 2 treatments (diets with transgenic and organic maize) and 100 replicates (n = 1). The biological parameters evaluated were: duration of the embryonic period, duration of the caterpillar-adult period, females' fecundity, progeny viability and longevity of adults. Analyzes of the chemical composition of the material used for the diets were also performed, two commercial fubas one with the transgenic seal in the package (Yoki®) and the other with organic certification (Biorga Orgánicos®). The analyzes carried out were: the percentage of dry matter and humidity, ash content, lipid content, and crude protein. In the bioassay, it was verified that the caterpillar-adult period was, on average, 35 days longer for the moths fed a diet containing transgenic fertilizer and the number of eggs was 60% lower for the caterpillars fed the same diet. Regarding the sexual ratio, viability and longevity of adults, no difference was found. The chemical composition showed significant differences, which proved that the organic fertilizer is better than the transgenic in nutritional matters. The results allow to conclude that the use of transgenic corn in the diet of Anagasta kuehniella, affects its development, fecundity, as well as the need for further studies on the subject