||Lack of kdr mutations in a population of Asian tiger mosquitoes from Costa Rica
Chaves, Luis Fernando ,
Kawashima, Emiko Futami, Kyoko ,
Minakawa, Noboru ,
Marin Rodriguez, Rodrigo
63 , 2015-06 , Universita di Bologna, Department of Agricultural Sciences
Use of insecticides has led to the fixation of alleles for single amino acid changes in the voltage gated sodium channel (VGSC) associated with knockdown resistance (kdr) in insects of agricultural or medical importance. In this short note, we study allele frequencies of 5 kdr loci, S989, I1011, L1014, V1016 and F1534 in a population of the Asian tiger mosquito, Aedes albopictus (Skuse) (Diptera Culicidae), collected in the only identified location with persistent infestations in Costa Rica. We found no mutant alleles associated with kdr resistance, and a synonymous point mutation was observed at loci V1016. Our results likely reflect the recent invasion of the Asian tiger mosquito in Costa Rica, and also provide a baseline for future studies looking at the global distribution of kdr mutations in this important vector of dengue and chikungunya viruses.