Abstract

PEREZ-MAYORGA, Sonia et al. Ascending polarity extracts of Dodonaea viscosa leaves on instars of Spodoptera frugiperda. Rev. Mex. Cienc. Agríc [online]. 2022, vol.13, n.3, pp.455-467.  Epub Aug 08, 2022. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v13i3.2841.

The search for environmentally friendly alternatives for the control of agricultural pests, which avoid damage to public health and the surrounding ecosystem, is a current demand that deserves responsible bioethical attention. In this sense, the objective of the present work was to evaluate the activity of the extracts of Dodonaea viscosa leaves with ascending polarity on the development of Spodoptera frugiperda. Foliar extracts of D. viscosa were obtained by cold maceration, using solvents in ascending polarity: hexane, dichloromethane and methanol, which were used in the antifeedant tests to know their individual effect. An experiment was conducted with two antifeedant bioassays, one with an artificial diet and the other with corn leaves; in both, the three extracts of D. viscosa obtained were applied at a concentration of 1% m/v. The experiment was carried out with L3 larvae of the third generation of S. frugiperda, from which the bioassays were carried out, during all stages of development. The data were subjected to a multifactorial Anova and to the comparison of means (Tukey p= 0.05). A principal component analysis (PCA) was performed to identify the variables influenced in each stage of the insect. The variables with significant differences were larval mortality, duration of the larval and pupal stage; as well as pupal weight and number of eggs laid. The extracts analyzed showed effects on the interaction with the type of diet, which was reflected in the variables evaluated during the development of S. frugiperda.

Keywords : Spodoptera frugiperda; alternative pest control; botanical products; Lepidoptera: Noctuidae.