Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Toxicity of two essential oils to Spotted wing Drosophila.

Abstract

There has been an increase of invasive insect species during the last decade caused by a drastic change in the biotic communities as a result of an enormous increment of the international trade and the intercontinental transportation, as well as the influence by climate change on insect species. Drosophila suzukii Matsumura (Diptera: Drosophilidae) is emerging as a global threat because of its recent range expansion and the economic impact of crop fruit-colonizing populations. The aim of this work was to evaluate the toxicity effect of two essential oils obtained from plants native to Cuba on the invasive spotted wing drosophila. The susceptibility of males and females of D. suzukii to volatile compounds of Thymus vulgaris and Piper auritum at different concentrations was evaluated after 1, 4, and 24 hours of application. Halfmaximal effective concentration (EC50) values at 24 h were calculated in each case. Both T. vulgaris (KD107) and P. auritum (KD48) oils made evident their high toxicity to D. suzukii males and females. The essential oil of T. vulgaris (107) at its highest concentration showed the highest percentage of total mortality. T. vulgaris essential oils could be considered as a source of bioactive substances compatible with integrated pest management (IPM) and biological control agents.