REPELLENT ACTIVITY OF ESSENTIALS OILS FROM SOME AROMATIC SPECIES AGAINST RED FLOUR BEETLE, Tribolium castaneum

MONICA BELLOZAS REINHARD; MARISOL MINIG; MARIANA PAULA MORERO; VICTORIA MANSO; CARLOS ALBERTO MOLDES; KATIA DURÁN; SILVIA AIDEE PATTACINI; GLADIS E. SCOLES

Merlo - San Luis

Jornada; XXXV Reunión Científica Anual de la Sociedad de Biología de Cuyo; 2017

Sociedad de Biología de Cuyo

Red flour beetle, Tribolium castaneum (Herbst) is a secondary plague widespread in the world. Establishment of this insect in storage sites of grain or flour decreases the quantity and quality of commercial and consumable products flour derivate. Essentials oils (EOs) are alternative way to make new ecologic friendly insecticides. The aim of present work was to design and evaluate liquid repellent formulations for T. castaneum control. Combinations of commercial EOs of Citrus limon (Cl) and EOs obtained from several aromatic species collected in pampa semiarid region, Helianthus petiolaris (Hp) and Baccharis spartioides (Bs), were used. Five repellents formulations were design containing 2% of EOs in combination: 1) Hp; 2) Bs; 3) Cl; 4) Hp-Cl; 5) Bs-Cl. Repellency of T. castaneum was assessed by area preference test method for five formulation tested during first 5h and 24h. The percentage of repellency after 24h exposition decrease significantly in single EOs formulations 1) Hp, 2) Bs and 3) Cl. Nevertheless, combined EOs formulations 4) Hp-Cl; 5) Bs-Cl shown the maximum repellence at 24h. Analysis of results indicate that combination of EOs formulated extend persistence of repellency at 24h more efficiently than single EOs formulations. We suggest a potential repellent activity of these essential oils from aromatic species used to the control of T. castaneum insect plague.