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First evidence of resistance to pyrethroid insecticides in Italian Aedes albopictus populations 26 years after invasion
Author(s) -
Pichler Verena,
Bellini Romeo,
Veronesi Rodolfo,
Arnoldi Daniele,
Rizzoli Annapaola,
Lia Riccardo Paolo,
Otranto Domenico,
Montarsi Fabrizio,
Carlin Sara,
Ballardini Marco,
Antognini Elisa,
Salvemini Marco,
Brianti Emanuele,
Gaglio Gabriella,
Manica Mattia,
Cobre Pietro,
Serini Paola,
Velo Enkelejda,
Vontas John,
Kioulos Ilias,
Pinto Joao,
della Torre Alessandra,
Caputo Beniamino
Publication year - 2018
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4840
Subject(s) - deltamethrin , chikungunya , permethrin , aedes albopictus , outbreak , arbovirus , biology , pyrethroid , cypermethrin , aedes , dengue fever , veterinary medicine , toxicology , virology , aedes aegypti , virus , ecology , pesticide , larva , medicine
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. © 2017 Society of Chemical Industry