Mosquito Traps: An Innovative, Environmentally Friendly Technique to Control Mosquitoes

We tested the use of mosquito traps as an alternative to spraying insecticide in Camargue (France) following the significant impacts observed on the non-target fauna through Bti persistence and trophic perturbations. In a village of 600 inhabitants, 16 Techno Bam traps emitting CO2 and using octenol lures were set from April to November 2016. Trap performance was estimated at 70% overall based on mosquitoes landing on human bait in areas with and without traps. The reduction of Ochlerotatus caspius and Oc. detritus, the two species targeted by Bti spraying, was, respectively, 74% and 98%. Traps were less efficient against Anopheles hyrcanus (46%), which was more attracted by lactic acid than octenol lures based on previous tests. Nearly 300,000 mosquitoes from nine species were captured, with large variations among traps, emphasizing that trap performance is also influenced by surrounding factors. Environmental impact, based on the proportion of non-target insects captured, was mostly limited to small chironomids attracted by street lights. The breeding success of a house martin colony was not significantly affected by trap use, in contrast to Bti spraying. Our experiment confirms that the deployment of mosquito traps can offer a cost-effective alternative to Bti spraying for protecting local populations from mosquito nuisance in sensitive natural areas.

[1]  M. Geier,et al.  Evaluation of BG-Sentinel Trap as a Management Tool to Reduce Aedes albopictus Nuisance in an Urban Environment in Italy , 2015, Journal of the American Mosquito Control Association.

[2]  Brigitte Poulin,et al.  Red flag for green spray: adverse trophic effects of Bti on breeding birds , 2010 .

[3]  W. Takken,et al.  Development and Field Evaluation of a Synthetic Mosquito Lure That Is More Attractive than Humans , 2010, PloS one.

[4]  O. Horstick,et al.  Bacillus thuringiensis israelensis (Bti) for the control of dengue vectors: systematic literature review , 2013, Tropical medicine & international health : TM & IH.

[5]  B. Caputo,et al.  Looking for the Gold Standard: Assessment of the Effectiveness of four Traps for Monitoring Mosquitoes in Italy , 2012, Journal of vector ecology : journal of the Society for Vector Ecology.

[6]  A. Faraji,et al.  The Eye of the Tiger, the Thrill of the Fight: Effective Larval and Adult Control Measures Against the Asian Tiger Mosquito, Aedes albopictus (Diptera: Culicidae), in North America , 2016, Journal of Medical Entomology.

[7]  D. Bryant The Factors Influencing the Selection of Food by the House Martin (Delichon urbica (L.)) , 1973 .

[8]  L. Eisen,et al.  Evaluation of a Peridomestic Mosquito Trap for Integration into an Aedes aegypti (Diptera: Culicidae) Push-Pull Control Strategy , 2012, Journal of vector ecology : journal of the Society for Vector Ecology.

[9]  C. Jakob,et al.  Indirect effects of mosquito control using Bti on dragonflies and damselflies (Odonata) in the Camargue , 2016 .

[10]  M. Geier,et al.  NEW TOOLS FOR SURVEILLANCE OF ADULT YELLOW FEVER MOSQUITOES: COMPARISON OF TRAP CATCHES WITH HUMAN LANDING RATES IN AN URBAN ENVIRONMENT , 2006, Journal of the American Mosquito Control Association.

[11]  Gregory M. Williams,et al.  Field Efficacy of BG-Sentinel and Industry-Standard Traps for Aedes albopictus (Diptera: Culicidae) and West Nile Virus Surveillance , 2009, Journal of medical entomology.

[12]  N. Becker,et al.  Field evaluation of four widely used mosquito traps in Central Europe , 2014, Parasites & Vectors.

[13]  A. Farajollahi,et al.  Effects of Biogents Sentinel Trap Field Placement on Capture Rates of Adult Asian Tiger Mosquitoes, Aedes albopictus , 2013, PloS one.

[14]  T. Williams,et al.  Efficacy and non-target impact of spinosad, Bti and temephos larvicides for control of Anopheles spp. in an endemic malaria region of southern Mexico , 2014, Parasites & Vectors.

[15]  B. Poulin Indirect effects of bioinsecticides on the nontarget fauna: The Camargue experiment calls for future research , 2012 .

[16]  L. Després,et al.  Persistence and Recycling of Bioinsecticidal Bacillus thuringiensis subsp. israelensis Spores in Contrasting Environments: Evidence from Field Monitoring and Laboratory Experiments , 2014, Microbial Ecology.

[17]  G. Lefebvre,et al.  Perturbation and delayed recovery of the reed invertebrate assemblage in Camargue marshes sprayed with Bacillus thuringiensis israelensis , 2018, Insect science.

[18]  A. Turner,et al.  Central place foraging by swallows (Hirundinidae): The question of load size , 1982, Animal Behaviour.

[19]  R. Barrera,et al.  Sustained, Area-Wide Control of Aedes aegypti Using CDC Autocidal Gravid Ovitraps , 2014, The American journal of tropical medicine and hygiene.