Insecticide Resistance Testing of Culex quinquefasciatus and Aedes albopictus from Mississippi

Abstract

Data on insecticide resistance in mosquitoes from Mississippi are reported. Mosquitoes were collected from June through October 2017 from 28 cities in Mississippi and included wild-caught Culex quinquefasciatus Say obtained as egg rafts (reared to adults), and Aedes albopictus (Skuse) collected as larvae (reared to adults). The Centers for Disease Control and Prevention (CDC) bottle bioassay protocol was utilized. Thirty-six populations of Cx. quinquefasciatus were tested for malathion resistance from 24 cities; 22 of them (61.1%) met the World Health Organization criteria as resistant, and the remaining 14 (38.9%) were classified suspected resistant. Forty-one populations of Cx. quinquefasciatus were also tested from 24 cities for resistance to permethrin, and of these, 18 populations (43.9%) were susceptible, 13 (31.7%) were resistant, and 10 (24.4%) were suspected resistance. Eighteen populations of Ae. albopictus were collected from 10 cities in Mississippi for resistance testing to malathion; 5 populations were susceptible (27.8%), 5 were resistant (27.8%), and 8 (44.4%) suspected resistant. Sixteen populations of Ae. albopictus were tested from 10 cities for resistance to permethrin and none were resistant.

Critical Review of Insecticide Resistance in Us Aedes Albopictus: Resistance Status, Underlying Mechanisms, and Directions for Future Research

“…aegypti collected from the same locations were resistant (Salinas et al 2021;Estep et al 2023). In Mississippi, 16 populations were susceptible to permethrin, five were susceptible to malathion, and 13 had some level of malathion IR (McInnis et al 2019). In state specific studies from North Carolina, Alabama, and Illinois, all populations tested were susceptible to permethrin (Richards et al 2019;Wang et al 2022;Kim & Stone 2018).…”

Finding mutations in all the wrong places: Prevalence of knock-down resistance F1534S mutations among Aedes albopictus (family: Culicidae, order: Diptera) in North Carolina

“…Although not widely reported, resistance to pyrethroids among Ae. albopictus has been documented in the United States (Marcombe et al 2014, Xu et al 2016, McInnis et al 2019, Richards et al 2019). The most common pyrethroid resistance mechanism, knockdown resistance ( kdr ), affects the voltage-gated sodium channel (VGSC) target site of pyrethroid insecticides.…”

Efficacy of metal nanoparticles as a control tool against adult mosquito vectors: A review

“…Unfortunately, sustained use and reliance on a small group of chemical classes of insecticides (i.e. pyrethroids, organophosphates and carbamates) has led to the development of widespread insecticide resistance (5)(6)(7)(8). Continued use of these same active ingredients (AIs) overtime will lead to diminished effectiveness (9) and may lead to the resurgence of mosquito-borne diseases (10).…”