title: Comparative efficacy of new commercial pediculicides against adults and eggs of Pediculus humanus capitis (head lice).
abstract: The use of pyrethroids to control head louse infestations have suffered considerable loss of efficacy due to the development of resistance. In the last past years, several new alternative products to synthetic pyrethroids have been developed and are sold in the Argentinean market against head lice. The present study investigated the efficacy of two new Argentinean products Nopucid Qubit® and Nopucid Bio Citrus® and its comparison with two reference products Nyda® and Hedrin®. Nopucid Qubit® is a two-phase lotion containing geraniol and citronellol (phase 1) and ciclopentaxiloxane (phase 2); while Nopucid Bio Citrus® contains dimethicone, ciclopentaxiloxane, and bergamot essential oil. These products are physically acting compounds. The sensitivity of two laboratory assays for testing insecticide activity of new formulations was also compared. Mortality (100%) of motile forms occurred after they were exposed to any product for 1 and 2 min, either by in vitro or ex vivo test. Concerning ovicidal activity, the most effective pediculicides were Nopucid Bio Citrus® and Nyda®, followed by Hedrin® and Nopucid Qubit®. The present study revealed, for the first time, the efficacy of over-the-counter commercial pediculicides available in Argentine (Nopucid Bio Citrus® and Nopucid Qubit®) on either motile stages or eggs against head lice.
authors: Centro de Investigaciones de Plagas e Insecticidas (CONICET-CITEDEF), Juan Bautista de La Salle 4397, B1603ALO, Villa Martelli, Buenos Aires, Argentina.
authors: Anabella
authors: A
authors: Gallardo
authors: Gastón
authors: G
authors: Mougabure-Cueto
authors: Claudia
authors: C
authors: Vassena
authors: María Inés
authors: MI
authors: Picollo
authors: Ariel Ceferino
authors: AC
authors: Toloza
mesh_terms: D000293:Adolescent; D000818:Animals; D001118:Argentina; D002648:Child; D006801:Humans; D007306:Insecticides / Q000494:pharmacology*; D010373:Lice Infestations / Q000469:parasitology; D010063:Ovum / Q000187:drug effects; D010374:Pediculus / Q000187:drug effects*; D016019:Survival Analysis
chemical_list: D007306:Insecticides