Exploring Contact Toxicity of Essential Oils against Sitophilus zeamais through a Meta-Analysis Approach.

ACHIMÓN F; PESCHIUTTA M.L; BRITO V.; BEATO M.; PIZZOLITTO R.; ZYGADLO J.A; ZUNINO M.P.

Plants

MDPI

Lugar: Basel; Año: 2022 vol. 11 p. 1 - 19

2223-7747

Sitophilus zeamais is a primary pest of maize. Our aim was to perform a qualitative reviewand meta-analyses with 56 scientific articles published from 1 January 2000 to 1 October 2022 dealingwith direct (topical application) and indirect (impregnation of essential oils, EOs, onto filter paperor maize grains) contact toxicity of EOs against S. zeamais. Three independent meta-analyses ofsingle means of LD50 (direct contact) and LC50 (indirect contact) were conducted using a randomeffect model. Essential oils more frequently evaluated were those belonging to Asteraceae, Apiaceae,Lamiaceae, Myrtaceae, Piperaceae, and Rutaceae. The LC50 global mean values were 33.19 µg/insect(CI95 29.81–36.95) for topical application; 0.40 µL/cm2 (CI95 0.25–0.65) for filter paper indirect contact;and 0.50 µL/g maize (CI95 0.27–0.90) for maize grains indirect contact. The species Carum carvi,Salvia umbratica, Ilicium difengpi, Periploca sepium, Cephalotaxus sinensis, Murraya exotica, Rhododendronanthopogonoides, Ruta graveolens, Eucalyptus viminalis, Ocotea odorifera, Eucalyptus globulus, Eucalyptusdunnii, Anethum graveolens, Ilicium verum, Cryptocarya alba, Azadirachta indica, Chenopodium ambrosioides,Cupressus semperivens, Schinus molle, Piper hispidinervum, Mentha longifolia, and Croton pulegiodorusshowed LC50 or LD50 values lower than the global means, indicating good insecticidal properties.Our results showed that EOs have great potential to be used as bioinsecticides against S. zeamais