Evaluation of Piper marginatum (Piperales: Piperaceae) Oil and Geraniol on the Embryonic Development of Spodoptera frugiperda (Lepidoptera: Noctuidae) in Comparison to Formulated Products

Abstract

Essential oils and their isolated constituents are constantly being studied for the control of insect pests. In this context, the present research reports the chemical composition of Piper marginatum (Jacq.) oil aiming to: 1) establish lethal concentrations LC30 and LC50 for this oil and the compound geraniol, 2) histologically examine the embryonic development of Spodoptera frugiperda (J.E. Smith) through light microscopy and scanning electron microscopy (SEM), as well as 3) compare the efficacy of the P. marginatum oil with that of the botanical insecticide azadirachtin, the synthetic insecticide deltamethrin, and acetone as a negative control. Semithin sections of S. frugiperda eggs revealed that the oil, geraniol, azadirachtin, and deltamethrin affected embryonic development at both concentrations. However, geraniol and the oil were more efficient because they caused more significant damage, even at lower concentrations. SEM revealed that all products altered the morphology of the eggs, modifying the structure of the chorion and making the eggs nonviable. Thus, this work demonstrates that P. marginatum oil is effective in the control of S. frugiperda because it results in embryonic damage even at the lowest concentrations.

Chemical ecology of Himalayan eggplant variety’s antixenosis: Identification of geraniol as an oviposition deterrent against the eggplant shoot and fruit borer

“…Moreover, recently it was discovered that in the fall armyworm, ( Spodoptera frugiperda J.E. Smith; Noctuidae), geraniol reduces oviposition and also impairs embryo development (Guedes et al ., 2020). It is known that intercropping of aromatic plants like coriander (Coriandrum sativum L.) (Khorsheduzzaman et al ., 1997; Satpathy & Mishra, 2011; Singh et al ., 2016), fennel ( Foeniculum vulgare Mill.)…”

Can Essential Oils Be a Natural Alternative for the Control of Spodoptera frugiperda? A Review of Toxicity Methods and Their Modes of Action

“…Only the P. marginatum EO was tested by immersion of the insects in the EO solution, and the lethal concentration obtained was 152.95 ppm [ 88 ]. Furthermore, this was the only method that was performed using S. frugiperda eggs.…”

Spray De Pimenta: Mais Um Produto Para Impulsionar O Agronégocio Pimenta Capsicum

“…No que se refere a inibiçãode oviposição o óleo essencial de folhas e caule de P. marginatum reduziu a oviposição (<50%) a 50 e 100 ppm de Aedes aegypti (L.) (AUTRAN et al, 2009). O mesmo óleo e o composto geraniol interferiram no desenvolvimento embrionário de S. frugiperda quando comparados a deltametrina e azadiractina (GUEDES et al, 2020).…”