Formulación de dieta artificial para la crianza de Spodoptera frugiperda utilizando insumos de la región de San Martín

Fall armyworm (Spodoptera frugiperda) is the most important pest of this crop in the San Martin region. Its massive breeding, for the purpose of studying its biology, breeding of natural enemies and others, is limited by the lack of inputs; for this reason, the objective of the study was to evaluate the different physiological and biological parameters of S. frugiperda, raised on an artificial diet made with inputs from the region. 35 first instar larvae were used for each treatment, each larva represented a repetition. For larval development, an incubator was used at 30±1°C and photophase 14h. The percentage of viability and the duration of the different instars, pupal weight and deformations were evaluated; the number of molts was determined by measuring the cephalic capsule of larvae; in adults the duration of the pre-oviposition, oviposition and post-oviposition period, and gross fertility were evaluated. The results suggest that the ESALQ-modified diet is the most suitable for raising S. frugiperda, since it showed a larval viability of 54.3% and 5 instars, the pupae had greater weight and the adults presented higher fecundity (848.2 eggs per female); the pupae on the diet with inputs from the region, presented deficient chitinization of the first abdominal segments and 0% viability.