Larvicide potential and toxicity of extract and fractions from flowers of <i>Tecoma stans</i> (Bignoniaceae)
The extract and fractions from flowers of <i>Tecoma stans</i> (Bignoniaceae), an invasive plant in Brazil, were evaluated for their larvicidal potential against <i>Culex quinquesfasciatus</i> larvae and for the toxicity to <i>Artemia salina</i>. The hexane (HEX) fraction caused 100% mortality at 1000 µg mL<sup>-1</sup> in the first 24 h of exposure (LC<sub>50</sub> = 118.73 µg mL<sup>-1</sup> and LC<sub>90</sub> = 306.06 µg mL<sup>-1</sup>). The LC<sub>50</sub> and LC<sub>90</sub> values for the dichloromethane (DCM) fraction were 399.40 µg mL<sup>-1</sup> and 853.36 µg mL<sup>-1</sup>. Only the ethyl acetate (EA) fraction was toxic to <i>A. salina.</i> The results suggest selectivity from the HEX and DCM fractions of <i>T. stans</i> against <i>C. quinquefasciatus</i> and may serve as eco-friendly alternatives to synthetic larvicides.
Authors
- Stênio Nunes Alves (ORCID: https://orcid.org/0000-0002-4103-2266)
- Thaís Paula Rodrigues Gonçalves (ORCID: https://orcid.org/0000-0001-8409-5956)
- Katyuce de Souza Farias (ORCID: https://orcid.org/0000-0002-5292-1018)
- Luciana Alves Rodrigues dos Santos Lima (ORCID: https://orcid.org/0000-0002-4130-0304)
- Vanessa Samúdio Santos Zanuncio (ORCID: https://orcid.org/0000-0002-2335-2426)
- Lucas Santos Azevedo (ORCID: https://orcid.org/0000-0002-1220-3724)
- Denise Brentan Silva (ORCID: https://orcid.org/0000-0003-0872-2756)
Institutions
- Universidade Federal de Mato Grosso do Sul (BR)
- Federal University of São João del-Rei (BR)
Publication Details
- Journal
- Natural Product Research
- Published
- 2025-12-12
- DOI
- https://doi.org/10.1080/14786419.2025.2600501
- Primary Topic
- Insect Pest Control Strategies
- Type
- article
- Field-Weighted Citation Impact
- 0.00