Extrakte von Alibertia ssp. (Rubiaceae) beeinträchtigen das Wachstum und die Fortpflanzung der Kohlmotte Plutella xylostella L. (Lepidoptera: Plutellidae)

Abstract

Considering that some bioactive compounds are more soluble in ethanol than in water, we tried to evaluate the bioactivity of the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis leaves at concentrations of 1 and 3% on the biological characteristics of parental and F1 generations of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae). Thus, the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis were tested on the biological characteristics of P. xylostella in the parental generation and their effects on the F1 generation. In general, the species tested showed significant results on the biological characteristics of P. xylostella. Pupal weight was affected by all plant species. A. edulis extracts reduced egg survival on the parental and F1 generation of P. xylostella while in F1 generation reduced the longevity of females. Larval duration, pupal weight and survival of eggs on parental generation were reduced by A. intermedia extracts.