| Autor: |
Hernández-Caracheo K; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Guerrero-López L; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Rodríguez-Sánchez B; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Rodríguez-Núñez E; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Rodríguez-Chávez JL; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico.; Ceickor University Center, Bernal Highway, Access to Ezequiel Montes Montes Km. 3, Los Benitos, CP., Queretaro 76299, Mexico., Delgado-Lamas G; Institute of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico., Campos-Guillén J; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Amaro-Reyes A; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Monroy-Dosta MDC; Man and His Environment Department, Metropolitan Autonomous University Xochimilco Unit, Calzada del Hueso 1100, Coyoacan, Mexico City 04960, Mexico., Zavala-Gómez CE; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Chaparro-Sánchez R; Faculty of Informatics, Autonomous University of Queretaro, Av. de las Ciencias s/n, Juriquilla 76101, Mexico., Rodríguez-Morales JA; Faculty of Engineering, Autonomous University of Queretaro, Queretaro 76010, Mexico., Pérez-Moreno V; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico., Ramos-López MA; Faculty of Chemistry, Autonomous University of Queretaro, Queretaro 76010, Mexico. |
| Abstrakt: |
For the management of Spodoptera frugiperda , botanical extracts have been used to reduce the environmental impacts of synthetic chemical pesticides. In the present investigation, the insecticidal activity of the acetonic and methanolic extracts of Heterotheca inuloides (Asteraceae) and of the main compound 7-hydroxy-3,4-dihydrocadalene on this pest as well as its ecotoxicological effect on Poecilia reticulata were evaluated. A greater insecticidal response was obtained from the acetonic extracts than from the methanolic extracts, with LC 50 values of 730.4 ppm and 711.7 ppm for samples 1 and 2, respectively. Similarly, there was a lethal effect on 50% of the P. reticulata population at low concentrations in the acetonic extract compared to the methanolic extract. The sesquiterpene 7-hydroxy-3,4-dihydrocadalene has greater insecticidal activity by presenting an LC 50 of 44.36 ppm; however, it is classified as moderately toxic for guppy fish. |
