title: Evaluation of sublethal effects of polymer-based essential oils nanoformulation on the german cockroach.
abstract: The German cockroach, Blattella germanica (L.), is a serious household and public health pest worldwide. The aim of the present study was to evaluate the sublethal activity of polymer-based essential oils (EOs) nanoparticles (NPs) on adults of B. germanica. The LC50 and LC25 for contact toxicity were determined. To evaluate the repellency of EOs and NPs at LC25, a software was specially created in order to track multiple insects on just-recorded videos, and generate statistics using the obtained information. The effects of EOs and NPs at LC25 and LC50 on the nutritional physiology were also evaluated. The results showed that NPs exerted sublethal effects on the German cockroach, since these products enhance the repellent effects of the EOs and negatively affected the nutritional indices and the feeding deterrence index.
authors.affiliation: FIA Laboratory, Analytical Chemistry Section, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina; Laboratorio de Zoología de Invertebrados II. Departamento de Biología, Bioquímica y Farmacia. Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina. Electronic address: jwerdin@hotmail.com.
authors.forename: Jorge Werdin
authors.initials: JW
authors.lastname: González
authors.affiliation: Laboratorio de Zoología de Invertebrados II. Departamento de Biología, Bioquímica y Farmacia. Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Cristhian
authors.initials: C
authors.lastname: Yeguerman
authors.affiliation: Laboratorio de Ciencias de las Imágenes, IIIE - CONICET. Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Diego
authors.initials: D
authors.lastname: Marcovecchio
authors.affiliation: Laboratorio de Ciencias de las Imágenes, IIIE - CONICET. Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Claudio
authors.initials: C
authors.lastname: Delrieux
authors.affiliation: Laboratorio de Zoología de Invertebrados II. Departamento de Biología, Bioquímica y Farmacia. Universidad Nacional del Sur, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina; Laboratorio de Zoología de Invertebrados II, INBIOSUR-CONICET, San Juan 670, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Adriana
authors.initials: A
authors.lastname: Ferrero
authors.affiliation: FIA Laboratory, Analytical Chemistry Section, INQUISUR-CONICET, Universidad Nacional del Sur, Av. Alem 1253, B8000CPB Bahía Blanca, Buenos Aires, Argentina.
authors.forename: Beatriz Fernández
authors.initials: BF
authors.lastname: Band
mesh_terms: D000818:Animals; D020048:Blattellidae / Q000187:drug effects* / Q000502:physiology; D005247:Feeding Behavior / Q000187:drug effects; D007306:Insecticides / Q000633:toxicity*; D007928:Lethal Dose 50; D008297:Male; D053758:Nanoparticles / Q000633:toxicity*; D009822:Oils, Volatile / Q000633:toxicity*; D011108:Polymers
chemical_list: D007306:Insecticides; D009822:Oils, Volatile; D011108:Polymers
keywords: Blatella germanica; Geranium and bergamot essential oils; Nutritional physiology; Polymer-based nanoparticles; Repellency