Insecticidal activity of copper (II) complexes with flavanone derivatives

Abstract

In this work, we describe the insecticidal activity against Spodoptera frugiperda of flavanone derivatives (naringin, naringenin and hesperidin) complexed to copper (II). For the assays, the compounds were incorporated into an artificial diet and offered to S. frugiperda during its larval period. The duration of larval and pupal phases, the weight of pupae and the percentage of dead insects at the end of the larval phase were evaluated. Among the tested compounds, the free flavanones 1 and 3 and the complexes 4 and 6 showed a shortening of the larval phase when compared to the control. Complex 9 showed the highest toxicity, with 96.66% larval mortality. This is the first report on the insecticidal activity of the Cu²⁺ complexes of the flavanones naringin, naringenin and hesperidin.

Keywords:

• Flavonoid derivatives complexes
• fall armyworm
• Spodoptera frugiperda

Disclosure statement

No potential conflict of interest was reported by the authors.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

The authors would like to thank National Council for Scientific and Technological Development ( Grant # 403210/2016-0), Coordination for the Improvement of Higher Education Personnel (CAPES), National Institute of Science and Technology for Biorational Control of Insect Pests and São Paulo Research Foundation (FAPESP, grant # 2012/25299-6), for the financial support and scholarships.