title: Field evaluation of baited traps for surveillance of Aedes japonicus japonicus in Switzerland.
abstract: The efficacy of Centers for Disease Control (CDC) miniature light traps and ovitraps was tested in the outskirts of the city of Zurich in Switzerland for their use in the surveillance of Aedes (Hulecoeteomyia) japonicus japonicus (Theobald) (Diptera: Culicidae), the invasive Asian bush mosquito. Sets of single CDC traps were run overnight (n = 18) in three different environments (forest, suburban and urban) in 3 × 3 Latin square experimental designs. Traps were baited with: (a) carbon dioxide (CO2 ); (b) CO2 plus light, or (c) CO2 plus lure blend [Combi FRC 3003 (iGu® )]. At the same locations, mosquito eggs were collected weekly using standard ovitraps baited with different infusions (oak, hay or tap water) and equipped with different oviposition substrates (a block of extruded polystyrene, a germination paper strip or a wooden stick). Data were analysed using Poisson and negative binomial general linear models. The use of light (P < 0.001) or lure (P < 0.001) significantly increased the attractiveness of CDC traps baited with CO2 . Oak and hay infusions did not increase the attractiveness of ovitraps compared with standing tap water (P > 0.05), and extruded polystyrene blocks were preferred as an oviposition substrate over wooden sticks (P < 0.05) and seed germination paper (P < 0.05). Carbon dioxide-baited CDC miniature light traps complemented with light or iGu® lure and ovitraps containing standing tap water and polystyrene oviposition blocks can be considered as efficient and simple tools for use in Ae. j. japonicus surveillance programmes.
authors.affiliation: Swiss National Centre for Vector Entomology, Institute of Parasitology, University of Zurich, Zurich, Switzerland.
authors.forename: F
authors.initials: F
authors.lastname: Balestrino
authors.affiliation: Swiss National Centre for Vector Entomology, Institute of Parasitology, University of Zurich, Zurich, Switzerland.|Avia-GIS, Zoersel, Belgium.
authors.forename: F
authors.initials: F
authors.lastname: Schaffner
authors.affiliation: Swiss National Centre for Vector Entomology, Institute of Parasitology, University of Zurich, Zurich, Switzerland.
authors.forename: D L
authors.initials: DL
authors.lastname: Forgia
authors.affiliation: Public Health Department, University of Agricultural Sciences and Veterinary Medicine, Iasi, Romania.
authors.forename: A I
authors.initials: AI
authors.lastname: Paslaru
authors.affiliation: Section of Epidemiology, Faculty of Veterinary Science (Vetsuisse), University of Zurich, Zurich, Switzerland.
authors.forename: P R
authors.initials: PR
authors.lastname: Torgerson
authors.affiliation: Swiss National Centre for Vector Entomology, Institute of Parasitology, University of Zurich, Zurich, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Mathis
authors.affiliation: Swiss National Centre for Vector Entomology, Institute of Parasitology, University of Zurich, Zurich, Switzerland.
authors.forename: E
authors.initials: E
authors.lastname: Veronesi
mesh_terms: D000330:Aedes / Q000502:physiology*; D000818:Animals; D005260:Female; D008297:Male; D009032:Mosquito Control / Q000295:instrumentation* / Q000379:methods*; D010675:Pheromones / Q000494:pharmacology*; D013557:Switzerland
chemical_list: D010675:Pheromones; C010411:insect attractants
keywords: Aedes japonicus japonicus; CDC light trap; attractants; infusions; oviposition substrate; ovitrap