Comparative data on the insecticide resistance of Anopheles albimanus in relation to agricultural practices in northern Belize, CA - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Pest Science Année : 2009

Comparative data on the insecticide resistance of Anopheles albimanus in relation to agricultural practices in northern Belize, CA

Nicole L Achee
  • Fonction : Auteur
Ireneo Briceno
  • Fonction : Auteur
Russell King
  • Fonction : Auteur
John P Grieco
  • Fonction : Auteur

Résumé

Anopheles albimanus Wiedemann is one of the primary vectors of malaria in northern Belize. The primary breeding sites for this species in Central America are fresh water wetlands that are found in close proximity to agriculture and, in particular, sugarcane Welds. The use of insecticides and herbicides on these crops leads to the introduction of chemicals into the surrounding wetlands. The potential for the development of insecticide resistance is, therefore, quite high. A study was undertaken to obtain comparative data on the resistance status of An. albimanus in northern Belize in relation to agriculture practices. Larval surveys were conducted at four collection points in marshes juxtaposed to diVerent crop types: Dubloon (DB)-control site located 300 m from any agriculture; Little Belize (LB)mixed crop agricultural with some human settlements; and Chan Chen (CC) and Buena Vista (BV)-year round sugarcane production. Time mortality curves were obtained by exposing F1 larvae to DDT 1 g/ml, malathion 1 g/ml, and permethrin 0.05 g/ml. SigniWcant diVerences in mortality rates from the four sites were observed only to malathion. The DB sites contained larvae that were the most susceptible overall, in congruence with its distance from crops. Larvae from LB exhibited a medium level of tolerance. Finally, the two populations collected at the edge of sugarcane Welds (CC and BV) exhibited the highest tolerance to malathion. These results represent Wrst data on the impact of agriculture on the resistance status of malaria vectors in northern Belize. The eVect of malathion on An. albimanus insecticide resistance reinforces the concerns of the potential impact of agriculture usage on the eYcacy of vector control program.

Dates et versions

hal-03433439 , version 1 (23-11-2021)

Identifiants

Citer

Isabelle Dusfour, Nicole L Achee, Ireneo Briceno, Russell King, John P Grieco. Comparative data on the insecticide resistance of Anopheles albimanus in relation to agricultural practices in northern Belize, CA. Journal of Pest Science, 2009, 83, pp.41 - 46. ⟨10.1007/s10340-009-0268-7⟩. ⟨hal-03433439⟩
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