First evidence of resistance to pyrethroid insecticides in Italian Aedes albopictus populations 26 years after invasion

Verena Pichler, Romeo Bellini, Rodolfo Veronesi, Daniele Arnoldi, Annapaola Rizzoli, Riccardo Paolo Lia, Domenico Otranto, Fabrizio Montarsi, Sara Carlin, Marco Ballardini, Elisa Antognini, Marco Salvemini, Emanuele Brianti, Gabriella Gaglio, Mattia Manica, Pietro Cobre, Paola Serini, Enkelejda Velo, John Vontas, Ilias KioulosJoao Pinto, Alessandra della Torre, Beniamino Caputo

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

BACKGROUND: Aedes albopictus has spread during the last few decades all over the world. This has increased significantly the risk of exotic arbovirus transmission (e.g. chikungunya, dengue, and Zika) also in temperate areas, as demonstrated by the Chikungunya 2007 and 2017 outbreaks in northeastern and central Italy. Insecticides are an important tool for limiting the circulation of these mosquito-borne viruses. The aim of the present study was to address the gap in current knowledge of pyrethroid insecticide resistance of European Ae. albopictus populations, focusing on populations from Italy, Albania and Greece. RESULTS: Bioassays for resistance to permethrin (0.75%), α-cypermethrin (0.05%) or deltamethrin (0.05%) were performed according to World Health Organization (WHO) protocols and showed reduced susceptibility (<90% mortality) of some Italian populations to permethrin and α-cypermethrin, but not to deltamethrin. CONCLUSION: This study reports the first evidence of resistance to pyrethroids in adult Italian Ae. albopictus populations. Results refer to the season preceding the Chikungunya 2017 outbreak in central Italy and highlight the need to increase efforts to monitor the spread of insecticide resistance and the need to develop strategies to limit the spread of insecticide resistance, particularly in areas where extensive treatments have been carried out to contain disease outbreaks.

Original languageEnglish
Pages (from-to)1319-1327
Number of pages9
JournalPest Management Science
Volume74
Issue number6
DOIs
Publication statusPublished - Jun 2018

Keywords

  • Aedes albopictus
  • Chikungunya vector
  • insecticide resistance
  • pyrethroids
  • vector control

UN Sustainable Development Goals (SDGs)

  • SDG 3 - Good Health and Well-Being

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