Knockdown Resistance Mutations in Aedes aegypti (Diptera: Culicidae) From Puerto Rico

This study assessed the levels of permethrin resistance and the frequency of two kdr mutations in eight Ae. aegypti populations collected in Puerto Rico in 2013. Permethrin resistance factors ranged from 33–214-fold relative to the New Orleans reference strain. The frequency of kdr mutation Ile1,016 ranged from 0.65 to fixation (1.0), and for Cys1,534 frequencies varied from 0.8 to fixation. Alarmingly, two populations—Carolina and Caguas—reached fixation at both loci. Our results suggest that permethrin effectiveness for Ae. aegypti control is compromised in these collections from Puerto Rico.

http://jme.oxfordjournals.org/cgi/content/short/53/6/1410?rss=1

Source: Journal of Medical Entomology - November 11, 2016 Category: Biology Authors: Ponce-Garcia, G., Del Rio-Galvan, S., Barrera, R., Saavedra-Rodriguez, K., Villanueva-Segura, K., Felix, G., Amador, M., Flores, A. E. Tags: Vector Control, Pest Management, Resistance, Repellents Source Type: research